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WILD LOBAU
CROCUS FAMILY

THE CROCUS FAMILY (Colchicaceae)

This Monocot family is comparatively small, including some two hundred species of herbaceous perennials with rhizomes or corms (underground storage organs permitting the plant to survive over winter).

Leaves are usually attached directly to the stem, (rarely with a leaf stalk,) elliptical or lineal in shape, parallel veined and with smooth margins.

Flowers are radially symmetrical and 3-merous, the 3 outer sepals and 3 inner petals being identical giving the flower an appearance of 6 petals.

Many of the members of this family are highly toxic, containing the substance colchicine, which has many medicinal uses.

(Monocots are one of two major groups of flowering plants, characterized as having only one seed leaf (cotyledon) in the embryonic form. (monocotyledon=one cotyledon). This group embraces the narrow-leaved, parallel-veined plants with floral symmetry in 3’s or multiples. It includes grasses and reeds. Its embryonic development differs from the other major group – the dicots (dicotyledon=two cotyledons) that include the broad-leaved, network veined plants with floral symmetry in 4’s or 5’s. Dicots have 2 seed-leaves in the embryonic form.)

(source: Wikipedia)

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

Autumn Crocus 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
Autumn Crocus
 in Lobau

© 2013 Margaret Eros

LEAF TYPE
PETAL TYPE
INFLORES- CENCE TYPE
HEIGHT OF PLANT
FLOWERING MONTH
HABITAT
PHOTO LOCATION
  • diagram of 
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simple 
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 leaf shape and 
parallel 
vein structure
    • diagram of 
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simple 
leaf shape 
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and 
parallel 
vein structure
    • LEAF TYPE
    • Shape:
    • --simple (undivided/entire).
    • Veins:
    • --parallel (no side branching).
    • This plant:
    • narrow, lanceolate leaves, up to 40cm long, arising at ground level in a rosette form but never at same time as flowers
  • Radial symmetry and 3 or 6 separate petals 
flower type diagram
    • 
Radial symmetry and 3 or 6 separate petals 
flower type diagram
    • FLOWER TYPE
    • Symmetry:
    • --radial (star-shaped as seen from above).
    • Petals:
    • --3 (or multiples, for example 6).
    • This plant:
    • 6 pale pink to purple petals join to form elongated tube extending to ground level, 6 anthers, 3 styles extending down petal tube to underground base of flower
  • 
<!--Next: FOR BLIND INFLORESENCE ICON. -->Single
 inflorescence diagram
    • 
Single 
 inflorescence diagram
    • INFLORESCENCE TYPE
    • Single
    • --each flower stem carries a single solitary flower.
    • This plant:
    • up to 3 flowers per plant emerging singly from underground corm
  • 8 to 30 cm
  • Sep Oct
  • Damp 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
Autumn Crocus
Colchicum autumnale
Other common name(s): Meadow Saffron, Naked Lady
German name(s): Herbstzeitlose, Giftkrokus, Wiesensafran
ITIS Serial #: 42907
Date:
15 Sept 2013

Most parts of the autumn crocus, are toxic to humans as well as most birds and animals. Cows and sheep are less affected by the poison but it will be present in their milk and this can adversely affect humans, particularly children, who drink it.

The plants grow preferably in warm, moist meadowland, partially wind protected Flowers and leaves are almost never seen together – it flowers in autumn after the leaves have wilted. In spring, between May and June (although occasionally a second flowering may occur), the ripening fruit capsule is pushed above ground with the emerging leaves. The tiny brown-black seeds, when ripe, are mainly dispersed by ants. The plant also reproduces vegetatively by multiplication of underground corms.

  • !?!
    • 
Swallowtail butterfly with title ‘did you know’
    • Though most parts of the autumn crocus or saffron plant are toxic, the stigmas are traditionally used as spice and colouring. Other parts are used in the production of medical treatments for diseases including gout and some forms of cancer.
  • !F!
    • 
6 radially symmetrical petals, 6 anthers and 3 separate stigma/styles in the centre
    • 6 radially symmetrical petals, 6 anthers and 3 separate stigma and styles in the centre
  • !W!
    • 
Autumn crocus with several flowers emerging from one corm
    • Autumn crocus with several flowers emerging from one corm