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WILD LOBAU
PEA FAMILY

THE PEA FAMILY (Fabaceae)

The Fabaceae, commonly known as the legume, pea, or bean family, are a large and economically important family of flowering plants. The group is the third-largest land plant family, behind only the Orchidaceae and Asteraceae, with 730 genera and over 19,400 species. The term "faba" comes from Latin, and appears to simply mean "bean". Leguminosae is an older name still considered valid, and refers to the fruit of these plants, which are called legumes. A number are important agricultural and food plants, including Glycine max (soybean), Phaseolus (beans), Pisum sativum (pea), Cicer arietinum (chickpeas), Medicago sativa (alfalfa), Arachis hypogaea (peanut), Ceratonia siliqua (carob), and Glycyrrhiza glabra (licorice).

Plants of this family are found throughout the world, growing in many different environments and climates. They range in habit from trees (like acacia) to small annual herbs, with the majority being herbaceous perennials (surviving the winter underground).

Many Fabaceae host bacteria in their roots within structures called root nodules. These bacteria, known as rhizobia, have the ability to take nitrogen gas (N2) out of the air and convert it to a form of nitrogen that is usable to the host plant ( NO3- or NH3 ). This process is called nitrogen fixation. The legume, acting as a host, and rhizobia, acting as a provider of usable nitrate, form a symbiotic relationship.

The leaves are usually alternate and pinnately compound, often trifoliate and rarely palmately compound. In some species, leaflets have evolved into tendrils which aid in climbing.

Plants have variable types of inflorescence, sometimes reduced to a single flower. The flowers often have five (generally fused) sepals and five free petals. They are bilaterally symmetrical (zygomorphic), and have a specialized structure. The upper petal, called the banner, is large and envelops the rest of the petals in bud, often reflexing (bending backwards) when the flower blooms. The two adjacent petals (‘wings’) surround the two bottom petals that are fused together at the apex (remaining free at the base). This boat-like structure is known as the keel and it encloses the male and female parts of the flower, normally ten stamens and one elongated ovary, with a curved style. These are only exposed when pollinator insects visit the flower to collect pollen and nectar.

The ovary most typically develops into a legume. A legume is a simple dry fruit that usually dehisces (opens along a seam) on two sides. A common name for this type of fruit is a "pod".

(source: Wikipedia)

Click on a thumbnail photo to go to full photo and description.

Backenklee  in Lobau Mountain clover  in Lobau Bird’s-foot Trefoil  in Lobau Asparagus Pea  in Lobau Sainfoin  in Lobau Red clover  in Lobau crown vetch  in Lobau tufted vetch  in Lobau Purple Milkvetch  in Lobau Tuberous Sweetpea  in Lobau
Lobau Location
QUICK KEY

Leaf Types (Simplified)

Icon
Shape
Veins
Simple parallel leaf-vein diagram
Simple
Parallel
Simple pinnate leaf-vein diagram
Simple
Pinnate
Lobed pinnate leaf-vein diagram
Lobed
Pinnate
Compound pinnate leaf-vein diagram
Compound
Pinnate
Trifoliate3-pinnate leaf-vein diagram
Trifoliate
3-Pinnate
Simple palmate leaf-vein diagram
Simple
Palmate
Lobed palmate leaf-vein diagram
Lobed
Palmate
Compound palmate leaf-vein diagram
Compound
Palmate
Other and various leaf-vein arrangments diagram
Other
Various

Flower Types (Simplified)

Icon
Symmetry
Petals
Radial symmetry and 3 petals flower type diagram
Radial
3 or multiple 3s
Radial symmetry and 4 petals flower type diagram
Radial
4
Radial symmetry and 5 separate petals flower type diagram
Radial
5, Separate
Radial symmetry and 5 tubular petals flower type diagram
Radial
5, Tubular
Radial symmetry and 5 tubular base flower type diagram
Radial
5,Tubular base
Radial symmetry and 5 bell-shape petals flower type diagram
Radial
5, Bell shape
Bilateral symmetry and 5 separate petals flower type diagram
Bilateral
5, Separate
Bilateral symmetry and 5 lipped petals flower type diagram
Bilateral
5, Lipped
Bilateral symmetry and winged petals flower type diagram
Bilateral
Butterfly form
Bilateral symmetry and tubular flower type diagram
Bilateral
Tubular
Spurred flower type diagram
.
Spurred
Stellate composite flower type diagram
Stellate
Composite
Structured clusters flower type diagram
Structured Clusters
5, small
Anomalous flower type diagram
Anomalous
.
Inconspicuous flower type diagram
Inconspicuous
.

Inflorescence Types (Simplified)

Icon
Type
Capitulum
Umbel flower head inflorescence type diagram
Umbel
Spike-like flower head inflorescence type diagram
Spike-like
Branched flower head inflorescence type diagram
Branched
Whorled flower head inflorescence type diagram
Whorled
Clustered flower head inflorescence type diagram
Clustered
Single
Backenklee
 in Lobau

© 2013 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
<!--Next: FOR BLIND LEAF SHAPE ICON.-->
compound 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
palmate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
compound 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
palmate 
vein structure
    • LEAF TYPE
    • Shape:
    • --compound (leaf deeply sub-divided; each ‘lobe’ forms separate leaflet).
    • Veins:
    • --palmate (main veins radiate from leaf base like fingers of a hand).
    • This plant:
    • each leaf bluish green with 5 narrow, slightly hairy fingers, no leaf stalk
  • Bilateral symmetry and butterfly form flower type diagram
    • Bilateral symmetry and butterfly form 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --winged (upper petals form open wing or sail, two lower petals cup to form ‘keel’, ‘butterfly’ form).
    • This plant:
    • White flower, keel with dark purple tip, standard petal with deep fold giving pointed appearance
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->
Clustered 
inflorescence diagram
    • Clustered 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Clustered
    • --flowers bunched together at the end of each stem in a variety of branching arrangements.
    • This plant:
    • dense, clover-like clusters of 6 – 14 small flowers, 5-7mm long, each with short peduncle (stalk)
  • 15 to 30 cm
  • Jun Jul Aug
  • Dry grassland

    • For more information, go to the 'Habitats & such' tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
No English name
Dorycnium pentaphyllum ssp germanicum
Other common name(s):
German name(s): Deutscher Backenklee, Seidenhaar-Backenklee
ITIS Serial #: 82031
Date:
17 June, 2013

This plant, in spite of its German and Latin name, is not found in Germany but is typical of the Pannonian Basin of central Europe and foothills of the Southern and Eastern Alps.

The flowers are tiny but the plant forms low clumps that may cover large areas of ground, making them a prominent feature when in full flower.

  • !D!
    • 
Detail of flower head and narrow five-fingered palmate leaves, softly hairy
    • Detail of flower head, single flowers with fold in standard petal, keel with deep purple tip and puffy, rounded wing petals. Narrow five-fingered palmate leaves, softly hairy
  • !W!
    • 
Clump of flowers showing five-fingered, blue-green palmate leaves
    • Clump of flowers showing five-fingered, blue-green palmate leaves
Mountain Clover
 in Lobau

© 2014 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
<!--Next: FOR BLIND LEAF SHAPE ICON.-->
trifoliate 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
3-pinnate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
trifoliate 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
3-pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --trifoliate (leaf with three separate lobes).
    • Veins:
    • --3-pinnate (each leaflet with one main vein and side branches).
    • This plant:
    • Each leaflet is lanceolate, narrow at the base and elongating to a fine point, finely toothed around the margin with tiny spines.
  • Bilateral symmetry and butterfly form 
flower type diagram
    • Bilateral symmetry and butterfly form 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --winged (upper petals form open wing or sail, two lower petals cup to form ‘keel’, ‘butterfly’ form).
    • This plant:
    • Each small flower has a narrow pointed shape giving the whole flower head a spiky appearance
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->
Clustered 
inflorescence diagram
    • Clustered 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Clustered
    • --flowers bunched together at the end of each stem in a variety of branching arrangements.
    • This plant:
    • Compact arrangement of small flowers on short stems at tips of branching stems giving impression of a single globular flower head, 15-20cm in diameter, when all flowers are in full bloom.
  • 15 to 60cm
  • May Jun Jul
  • Dry grassland

    • For more information, go to the “Habitats & such” tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Mountain Clover
Trifolium montanum
Other common name(s):
German name(s): Berg-Klee
ITIS Serial #: 820039
Date:
08 June, 2014

This perennial is found in southern Scandinavia, dry grasslands of central Europe and mountainous areas of southern Europe.

Upright stems covered with short woolly hairs grow from a basal rosette of leaves, usually branching to produce 2 compact whitish or cream-coloured flowering heads.

When the flower head is fully in bloom it appears as a neat spiky ball 15 - 20mm in diameter. Older flower heads become elongated with the fading flowers at the base turning reddish brown. Each small flower has a narrow pointed shape and is carried on a short stalk, 1mm long.

Pollinating insects are various species of bee as well as butterflies and moths.

Usually each flower produces a pod containing a single seed only.

The trifoliate leaves are distinct in shape, lanceolate with elongated points, finely serrated margins with short spines.

  • !?!
    • 
Trifolium montanum  is the county flower of Oslo, Norway.
    • Trifolium montanum is the county flower of Oslo, Norway.
  • !W!
    • 
meadow of mountain clover showing flower heads in various stages of development, slightly pointed to begin with, globular and spiky when in full bloom
    • meadow showing flower heads in various stages of development, slightly pointed to begin with, globular and spiky when in full bloom
  • !D!
    • 
Detail of mountain clover flower heads showing spiky flowers on short stalks becoming reddish brown as they fade, the cluster becoming more elongated as it matures. Also shows hairy stem and finely serrated leaves
    • Detail of flower heads showing spiky flowers on short stalks becoming reddish brown as they fade, the cluster becoming more elongated as it matures. Also shows hairy stem and finely serrated leaves
Bird’s-foot Trefoil
 in Lobau

© 2011 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
<!--Next: FOR BLIND LEAF SHAPE ICON.-->
compound 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
pinnate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
compound 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --compound (leaf deeply sub-divided; each ‘lobe’ forms separate leaflet).
    • Veins:
    • --pinnate (main central vein with side branches).
    • This plant:
    • 5 leaflets per leaf but the terminal 3 are conspicuously held above the others, hence the name ‘trefoil’ meaning 3 leaves
  • Bilateral symmetry and butterfly form 
flower type diagram
    • Bilateral symmetry and butterfly form 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --winged (upper petals form open wing or sail, two lower petals cup to form ‘keel’, ‘butterfly’ form).
    • This plant:
    • Young flowers often with an orange tinge
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->
Clustered 
inflorescence diagram
    • Clustered 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Clustered
    • --flowers bunched together at the end of each stem in a variety of branching arrangements.
    • This plant:
    • 3-8 flowers clustered at tip of stem forming a loose head
  • 5 to 30 cm
  • May Jun Jul Aug
  • Dry grassland

    Meadow

    • For more information, go to the “Habitats & such” tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Bird’s-foot Trefoil
Lotus corniculatus
Other common name(s): Birdfoot Deervetch, Bacon and Eggs
German name(s): Gewöhnliche Hornklee, Schotenklee
ITIS Serial #: 26362
Date:
11 May, 2011

This is a type of clover, perennial with a sprawling growth , growing upwards to keep pace with that of surrounding grasses, occasionally reaching a length of 50 cms supporting itself on neighbouring plants although it can also survive close grazing, mowing and trampling.

It is used in agriculture as a forage plant, grown for pasture, hay, and silage.

A double flowered variety is grown as an ornamental plant. The plant is an important nectar source for many insects and is also used as a larval food plant by many species of butterfly.

The name ‘Bird’s-foot’ refers to the clawed appearance of the seed pods.


Asparagus Pea
 in Lobau

© 2011 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
<!--Next: FOR BLIND LEAF SHAPE ICON.-->
trifoliate 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
pinnate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
trifoliate 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --trifoliate (leaf with three separate lobes).
    • Veins:
    • pinnate (each leaflet with one main vein and side branches).
    • This plant:
    • Tip of each leaf stem distinctly trifoliate in appearance with elliptic, fleshy leaflets; 2 extra separate leaflets at base of leaf stem, (therefore each leaf strictly 5-part, not truly trifoliate).
  • Bilateral symmetry and butterfly form 
flower type diagram
    • Bilateral symmetry and butterfly form 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --winged (upper petals form open wing or sail, two lower petals cup to form ‘keel’, ‘butterfly’ form).
    • This plant:
    • Pale yellow flower, large in comparison with leaf size, standard petals longer than lateral wing petals, tubular sepals with long, hairy points
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->
Single
 inflorescence diagram
    • Single 
 inflorescence diagram
    • INFLORESCENCE TYPE
    • Single
    • --each flower stem carries a single solitary flower.
    • This plant:
    • 2 or 3 narrow leaflets or bracts at base of each flower
  • 10 to 25 cm
  • May Jun
  • Damp grassland

    • For more information, go to the “Habitats & such” tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Asparagus Pea
Lotus maritimus, syn: Lotus siliquosus, syn:Tetragonoglobus maritimus
Other common name(s): Squarepod Deervetch, Winged Pea
German name(s): Spargelklee, Spargelschote, Spargelbohne
ITIS Serial #: 819653
Date:
11 May, 2011

This plant is native to the southern Mediterranean region and Central Europe. In Germany and Austria it is rare and protected.

It is a herbaceous perennial plant with prostrate growth, stems spreading outwards from the base forming clumps, turning upward at tips. (see !W! button below). In spring, the pale yellow, single flowers catch the sunlight at ground level with their relatively large standard petals (approx. 2cm long). The stems and leaves are slightly hairy and grey-green in colour and grow close to the ground.

The seed pods grow to about 4-5cm long and possess 4 distinct wing-like ribs. When ripe, the pod splits long ways and the numerous seeds are ejected.

  • !W!
    • 
prostrate stems of asparagus pea spreading from base of plant producing clumps of growth
    • prostrate stems spreading from base of plant producing clumps of growth
  • !L!
    • 
Leaves of Asparagus pea, trifoliate appearance at tips with secondary leaflets at base of leaf stalks
    • detail of leaves, trifoliate appearance at tips with secondary leaflets at base of leaf stalks
  • !D!
    • 
side view of flowers of asparagus pea showing tubular sepals with hairy tips and 3 leaflets at base
    • side view of flowers showing tubular sepals with hairy tips and 3 leaflets at base

Sainfoin
 in Lobau

© 2011 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
<!--Next: FOR BLIND LEAF SHAPE ICON.-->
compound 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
pinnate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
compound 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --compound (leaf deeply sub-divided; each ‘lobe’ forms separate leaflet).
    • Veins:
    • --pinnate (main central vein with side branches).
    • This plant:
    • 6-12 pairs of elongated, egg-shaped leaflets per compound leaf
  • Bilateral symmetry and butterfly form 
flower type diagram
    • Bilateral symmetry and butterfly form 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --winged (upper petals form open wing or sail, two lower petals cup to form ‘keel’, ‘butterfly’ form).
    • This plant:
    • Larger wing petal with dark stripes: 5 sepals, long, hairy, finely pointed
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->
Spike-like 
inflorescence diagram
    • Spike-like 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Spike-like
    • --flowers concentrated at the ends of each stem in an elongated fashion, either erect or drooping.
    • This plant:
    • Erect spike, small flowers open from base upwards
  • 30 to 60 cm
  • May Jun Jul
  • Dry grassland

    Fields, wayside

    • For more information, go to the “Habitats & such” tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Sainfoin
Onobrychis viciifolia
Other common name(s): Common Sainfoin
German name(s): Futter-Esparsette, Saat-Esparsette
ITIS Serial #: 26810
Date:
22 May, 2011

This is a perennial plant with a vertical root up to 4m deep that regenerates from dormant buds at ground level after the winter. As with many members of the pea family (see description at top of page), the roots possess nodules of nitrogen-fixing bacteria in a symbiotic relationship, of advantage to both plant and bacteria. This has the effect of enriching the soil and Sainfoin can be planted as a soil-improving crop. It is also a valuable food plant for cattle, especially so as it contains chemicals (condensed tannins) in high concentration that destroy or discourage nematode parasites, providing a natural alternative to drugs.

Sainfoin is a rich provider of nectar and pollen which a relatively large variety of insects, including different species of bees, can make use of thus making a valuable contribution to biodiversity in the natural environment.

  • !D!
    • detail of several flowers of Sainfoin in various stages of opening
    • detail of several flowers in various stages of opening, stamens visible within the keel petals of one
Red Clover
 in Lobau

© 2011 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
<!--Next: FOR BLIND LEAF SHAPE ICON.-->
trifoliate 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
3-pinnate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
trifoliate 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
3-pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --trifoliate (leaf with three separate lobes).
    • Veins:
    • --3-pinnate (each leaflet with one main vein and side branches).
    • This plant:
    • Leaves oval to elliptic with white patches, smooth margins and carried on long leaf stalks
  • Bilateral symmetry and tubular form
flower type diagram
    • Bilateral symmetry and tubular form
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --tubular (petals joined to form a tube).
    • This plant:
    • Each flower opens out at tip of tube into pea-type petal arrangement
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->
Capitulum 
inflorescence diagram
    • 
Capitulum 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Capitulum
    • --flower head with many small flowers (florets) in tight clusters around the swollen tip of the flower stem (receptacle).
    • This plant:
    • Each flower head is a dense inflorescence carried singly on a long flower stem, often with secondary stalkless leaflets arising at the base.
  • 10 to 30 cm
  • May Jun Jul Aug Sep
  • Meadows

    Wayside

    • For more information, go to the “Habitats & such” tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Red Clover
Trifolium pratense
Other common name(s):
German name(s): Wiesen-Klee, Rot-Klee
ITIS Serial #: 26313
Date:
03 May, 2011

This is a short-lived perennial plant, and, like many members of this family, has root nodules containing bacteria known as rhizobia,that have the ability to take nitrogen gas 'N2' out of the air and convert it to a form of nitrogen that is usable to the host plant. This is a mutually advantageous relationship known as symbiosis and contributes to soil enrichment. It has deep roots that can reach down as far as 2 meters and it spreads by means of a branching network of underground stems or rhizomes.

The flowers produce nectar at the base of their flower tubes so only long-tongued bees and butterflies can normally reach it. Nectar robbers with shorter tongues sometimes bite holes in the flower tubes and reach the nectar that way.

Each tiny flower in the dense inflorescence produces a seed pod between 1.5 and 4mm long containing 1-2 seeds that remain capable of germination for at least 14 years, sometimes much longer.

Red Clover is an important fodder crop as well as a rich supplier of nectar for honey bees and butterflies.

  • !?!
    • Red Clover is a national flower of Denmark with symbolic value though it has been superseded in recent years by the Marguerite or daisy.
    • Red Clover is a national flower of Denmark with symbolic value though it has been superseded in recent years by the Marguerite or daisy.
  • !D!
    • 
side view showing tubular  'pea-type' flowers, each surrounded at base by ring of green feathery sepals
    • side view showing tubular 'pea-type' flowers, each surrounded at base by ring of green feathery sepals

Purple Crown-vetch
 in Lobau

© 2011 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
<!--Next: FOR BLIND LEAF SHAPE ICON.-->
compound 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
pinnate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
compound 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --compound (leaf deeply sub-divided; each ‘lobe’ forms separate leaflet).
    • Veins:
    • --pinnate (main central vein with side branches).
    • This plant:
    • 4-12 pairs of oval leaflets along main leaf stem in feathered arrangement
  • Bilateral symmetry and butterfly form flower type diagram
    • Bilateral symmetry and butterfly form 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --winged (upper petals form open wing or sail, two lower petals cup to form ‘keel’, ‘butterfly’ form).
    • This plant:
    • Each flower with billowing sail petal and bulbous keel in shades of pale purple to white
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->
Clustered 
inflorescence diagram
    • Clustered 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Clustered
    • --flowers bunched together at the end of each stem in a variety of branching arrangements.
    • This plant:
    • Loose arrangement of flowers in flower head at tip of each erect flower stem
  • 30 to 80 cm
  • May Jun Jul Aug Sep
  • Grassland, wayside

    Woodland edge

    • For more information, go to the “Habitats & such” tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Crown-vetch
Securigera varia; syn: Coronilla varia
Other common name(s): Purple Crown Vetch
German name(s): Bunte Kronwicke
ITIS Serial #: 26553
Date:
01 June, 2011

This is a tough, spreading, low-growing legume with deep roots that possess nodules of symbiotic nitrogen-fixing bacteria. These improve the soil as well as benefiting the plant itself. The whole plant is toxic, especially the seeds.

From the second year of growth onwards, the plant produces showy clusters of pinkish-white flowers throughout the summer and upright pods, 2-8cm long that break up into sections, each containing a single seed.


Tufted Vetch
 in Lobau

© 2011 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
<!--Next: FOR BLIND LEAF SHAPE ICON.-->
compound 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
pinnate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
compound 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --compound (leaf deeply sub-divided; each ‘lobe’ forms separate leaflet).
    • Veins:
    • --pinnate (main central vein with side branches).
    • This plant:
    • 12-20 oval leaflets arranged alternately along mid-rib, terminating in tendrils
  • Bilateral symmetry and tubular form
flower type diagram
    • Bilateral symmetry and tubular form
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --tubular (petals joined to form a tube).
    • This plant:
    • Each flower opens out at tip of tube into pea-type petal arrangement
  • 
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Spike-like 
inflorescence diagram
    • Spike-like 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Spike-like
    • --flowers concentrated at the ends of each stem in an elongated fashion, either erect or drooping.
    • This plant:
    • 10 – 30 drooping flowers carried along one side of erect flower stem
  • 30 to 100 cm
  • May Jun Jul Aug
  • Meadows

    Woodland edge

    • For more information, go to the “Habitats & such” tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Tufted Vetch
Vicia cracca
Other common name(s): Bird Vetch, Cow Vetch
German name(s): Vogel-Wicke
ITIS Serial #: 26335
Date:
29 May, 2011

This is a deeply rooted, perennial plant that climbs and supports itself by clinging to neighbouring vegetation with the help of coiling tendrils, sometimes strangling and suffocating smaller plants.

It is widely used as a forage plant for cattle and has a soil improving quality on account of the nitrogen fixing bacteria on its roots (see family description at top of page).

Each flower produces a seed pod, about 2cm long, which turns dark brown when ripe and dry, bursting open to shoot out the small black round seeds, sometimes as far as 1-2 meters.

Birds are especially fond of the seeds but also eat the foliage, (hence the common name Bird Vetch).

  • !D!
    • 
detail of individual flowers of tufted vetch showing tubular form and pea-like arrangement of petals at tip
    • detail of individual flowers showing tubular form opening out into pea-like arrangement of petals at tip
  • !L!
    • 
slightly hairy leaves of tufted vetch and tendrils coiling round nearby stems
    • oval, slightly hairy leaves and tendrils coiling round nearby stems

Purple Vetch
 in Lobau

© 2011 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
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compound 
<!--Next brown section: FOR BLIND LEAF VEIN ICON.-->
 leaf shape and 
pinnate 
vein structure
    • diagram of 
<!--Next: FOR BLIND POPUP LEAF SHAPE.-->
compound 
leaf shape 
<!--Next: FOR BLIND POPUP LEAF VEIN ICON.-->
and 
pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --compound (leaf deeply sub-divided; each ‘lobe’ forms separate leaflet).
    • Veins:
    • --pinnate (main central vein with side branches).
    • This plant:
    • usually 16 pairs oppositely arranged leaflets in each leaf, not hairy, oval, pointed at tip and narrowing towards base
  • Bilateral symmetry and butterfly form 
flower type diagram
    • Bilateral symmetry and butterfly form 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --winged (upper petals form open wing or sail, two lower petals cup to form ‘keel’, ‘butterfly’ form).
    • This plant:
    • standard petal long and upright, about 3 times as long as keel petals , tubular base also elongated, sepals spiky in appearance
  • 
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Clustered 
inflorescence diagram
    • Clustered 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Clustered
    • --flowers bunched together at the end of each stem in a variety of branching arrangements.
    • This plant:
    • dense, slightly elongated cluster at tips of strong erect flower stems
  • 10 to 25 cm
  • May Jun Jul Aug
  • Dry grasslands

    Meadows

    • For more information, go to the 'Habitats & such' tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Purple Milkvetch
Astragalus onobrychis
Other common name(s):
German name(s): Fahnen-Tragant, Esparsetten-Tragant
ITIS Serial #: 192399
Date:
29 May, 2011

This has distinctive deep purple, clover-type flower heads that lengthen as they develop. They are arranged singly on strong, flower stems growing upwards. The plant is a perennial and overwinters as rhizomes, stems spread laterally forming large clumps of bright flowers.

The leaves are typical of vetches with long central veins and up to 16 pairs of oppositely arranged leaflets (see !L! button below) but without tendrils.

  • !D!
    • 
detail of single flower in cluster showing elongated standard petal and small keel  petals.
    • detail of single flower in cluster showing elongated standard petal and small keel petals, spiky sepals visible in flower buds at tip of stem.
  • !W!
    • 
group of flowers , leaves developing along length of creeping stems; strong, erect flower stems
    • group of flowers , leaves developing along length of creeping stems; strong, erect flower stems
  • !L!
    • 
long leaves with 16 pairs of opposite leaflets, no tendrils
    • long leaves with 16 pairs of opposite leaflets, no tendrils

Tuberous Sweetpea
 in Lobau

© 2011 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
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trifoliate 
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 leaf shape and 
3-pinnate 
vein structure
    • diagram of 
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trifoliate 
leaf shape 
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and 
pinnate 
vein structure
    • LEAF TYPE
    • Shape:
    • --trifoliate (leaf with three separate lobes).
    • Veins:
    • --pinnate (each leaflet with one main vein and side branches).
    • This plant:
    • Untypical structure: 2 oval leaflets with spiked tips appear in pairs together with a branched tendril –the third leaflet has become the tendril.
  • Bilateral symmetry and butterfly form 
flower type diagram
    • Bilateral symmetry and butterfly form 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --bilateral (distinct right and left sided [mirror image])
    • Petals:
    • --winged (upper petals form open wing or sail, two lower petals cup to form ‘keel’, ‘butterfly’ form).
    • This plant:
    • Each flower 1-2cms across, large open standard petal, 2 wing petals enfolding a keel of 2 fused petals.
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->
Clustered 
inflorescence diagram
    • 
Clustered 
inflorescence diagram
    • INFLORESCENCE TYPE
    • Clustered
    • --flowers bunched together at the end of each stem in a variety of branching arrangements.
    • This plant:
    • Long flower stems carry groups of 2-7 flowers in loosely branched, one-sided clusters at tips
  • 20 to 100 cm
  • May Jun Jul Aug
  • Meadow

    Wayside

    • For more information, go to the 'Habitats & such' tab in the menu bar.
  • diagram of photo location in the Lobau
    • diagram of photo location in the Lobau
Tuberous Sweetpea
Lathyrus tuberosus
Other common name(s): Tuberous Vetchling, Earthnut Pea
German name(s): Knollen-Platterbse, Erdnuss-Platterbse
ITIS Serial #: 25885
Date:
04 July, 2011

This is a perennial, weak-stemmed, trailing and climbing plant that can reach stem lengths of up to a meter. It can reproduce vegetatively from its spreading root system as well as from seed.

The extensive roots develop tubers that reach a maximum 'hazelnut' size after 2-3 years. These tasty and nutritious tubers were planted in fields and harvested in the past but the low productivity has caused their loss of popularity.

The flowers resemble sweet peas and have a scent and stunning colour that makes them highly visible. After pollination, brown pods develop, each containing up to 6 pea-like seeds.

  • !D!
    • 
Close-up of flowers showing large standard petal and wing petals enclosing the keel
    • Close-up of flowers showing large standard petal and wing petals enclosing the keel
  • !L!
    • 
leaf with 2 leaflets and a tendril (modified trifoliate arrangement)
    • leaf with 2 leaflets and a tendril (modified trifoliate arrangement)