Crotalaria alata D.Don

Scientific Description

Genus Crotalaria. Form prostrate,spreading or scrambling. Habit herb. Stems Indumentum hairy, Pustules or glands absent, Striation (stems ribbed) not striate, Cross section winged, Spiny on any part of plant not spiny. Leaves or phylloclades Presence clearly present, Position alternate, Leaves simple, Leaves or phylloclade continuous with stem not continuous with stem, Cross section of leaf or leaflet flat with flat margins, Margins of leaf or leaflet entire, Tuberculate tubercles absent, Pustules or glands absent. Length Leaf length 8-20. Width (entire leaves only) Leaf width 1-5. Scale leaves length mm long NaN (?). Indumentum Presence hairy, Type simple. Stipules Presence present and persistent to older leaves, Glands without glands, Ribs ribless. Length Stipule length 1(-4). Bracteoles Presence present and persistent, Indumentum hairy, Striation not striate. Length Bracteole length 2.5-5. Pedicel Presence present, Indumentum hairy. Length Pedicel length 3-3.5. Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 8-9. Indumentum Presence hairy, Type with simple hairs. Corolla Colour patterning uniformly coloured, Colour (when uniformly coloured) yellow, Petal claws ( the narrow base of the petals present. Length Corolla length 10-11. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length 8-9. Wings Auricles not auriculate. Length Wing length 7-8.5. Keel Auricles not auriculate, Indumentum hairy at least in part, Beak beaked. Length Keel length 9-10. Stamens Number ten. Anthers anther length 1.8-2, Position at two different levels (filaments alternately long and short). Filaments Fusion united in an open sheath. Length Filament length 4-5.5. Ovary Placement sessile or subsessile. Indumentum Presence hairy or glandular. Style Indumentum hairy or glandular towards the base, Bearded ( with a tuft of hairs at apex ) not bearded, Apex terete. Length Style length 8-9. Fruit Type dehiscent (a pod or follicle), Constriction not constricted between the seeds, Compression round in cross-section, Placement stipitate, Beak not beaked. Length Fruit length 22-35. Width Fruit width 11-18. Indumentum Presence glabrous. Flowering time January, February, March, April, May, June, July or August. Distribution Botanical Province Northern, IBRA Bioregion Northern Kimberley, Victoria Bonaparte, Central Kimberley, Ord-Victorian-Plain or Dampierland.