- Reference
- Austrobaileya 6:310 (2002)
- Conservation Code
- Not threatened
- Naturalised Status
- Native to Western Australia
- Name Status
- Current
Erect annual, herb, to 0.4 m high. Fl. yellow, Mar to Jun or Aug. Cracking clay over basalt, red clay loam. Flats, crabholes, plains.
Scientific Description
Genus Crotalaria. Form erect. Habit herb. Stems Indumentum hairy, Pustules or glands absent, Striation (stems ribbed) not striate, Cross section terete, Spiny on any part of plant not spiny. Leaves or phylloclades Presence clearly present, Position alternate, Leaves compound, Leaves or phylloclade continuous with stem 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 30-50. Width (entire leaves only) Leaf width NaN (?). Scale leaves length mm long NaN (?). Leaflets Number three, Arrangement pinnately arranged. Terminal leaflet Presence present, Stalk stalked. Indumentum Presence hairy, Type simple. Stipules Presence present and persistent to older leaves, Glands with glands (?) or without glands (?), Ribs ribbed (?) or ribless (?). Length Stipule length NaN (?). Bracteoles Presence present and persistent, Indumentum hairy (?) or glabrous (?), Striation striate (?) or not striate (?). Length Bracteole length NaN (?). Pedicel Presence present, Indumentum hairy. Length Pedicel length 3.5. Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 5-6.5. 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 15-16.5. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length 14-16. Wings Auricles not auriculate. Length Wing length 13-15. Keel Auricles not auriculate, Indumentum glabrous, Beak beaked. Length Keel length 14-17.5. Stamens Number ten. Anthers anther length 0.7-2.8, Position at two different levels (filaments alternately long and short). Filaments Fusion united in an open sheath. Length Filament length 9-11. Ovary Placement stipitate. 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 14-15. 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 16-20. Width Fruit width 6-8. Indumentum Presence hairy, Indumentum type with simple hairs. Flowering time March, April, May, June or August. Distribution Botanical Province Eremaean, IBRA Bioregion Pilbara.
Distribution
- IBRA Regions
- Pilbara.
- IBRA Subregions
- Chichester, Fortescue, Hamersley, Roebourne.
- Local Government Areas (LGAs)
- Ashburton, East Pilbara, Karratha, Port Hedland.