- Reference
- T.Mitch., J.Exped.Trop.Australia 386 (1848)
- Conservation Code
- Not threatened
- Naturalised Status
- Native to Western Australia
- Name Status
- Current
Perennial, herb, to 0.3 m high. Fl. yellow, Jun. Black soil. Plain.
Scientific Description
Genus Crotalaria. Form erect. Habit herb. Stems Indumentum hairy, Pustules or glands absent, Striation (stems ribbed) 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 20-35. 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 without glands, Ribs ribless. Length Stipule length 1.5-2.5. Bracteoles Presence present and persistent, Indumentum hairy, Striation not striate. Length Bracteole length 0.5-1. Pedicel Presence present, Indumentum hairy. Length Pedicel length 1.5-2. Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 3-3.5. 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 7-8.6. Indumentum Presence absent. Standard Indumentum hairy at least in part, Auricles not auriculate. Length Standard length 7-8.7. Wings Auricles not auriculate. Length Wing length 5.5-6.5. Keel Auricles not auriculate, Indumentum hairy at least in part, Beak not beaked. Length Keel length 7-8.5. Stamens Number ten. Anthers anther length 0.8, Position at two different levels (filaments alternately long and short). Length Filament length 3-3.2. 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 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 14-22. Width Fruit width 3.5-8. Indumentum Presence glabrous. Flowering time June. Distribution Botanical Province Northern or Eremaean, IBRA Bioregion Pilbara or Central Kimberley.
Distribution
- IBRA Regions
- Central Kimberley, Ord Victoria Plain, Pilbara.
- IBRA Subregions
- Chichester, Fortescue, Hamersley, Pentecost, Purnululu, Roebourne, South Kimberley Interzone.
- Local Government Areas (LGAs)
- Ashburton, Derby-West Kimberley, East Pilbara, Halls Creek, Karratha, Port Hedland.