Crotalaria montana var. angustifolia (Gagnep.) Niyomdham

Scientific Description

Erect, herb. Stems terete, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, simple, alternate, not continuous with stem, 10-38 mm long, 4-7 mm wide, hairy, with simple hairs, flat with flat margins; margins entire; tubercles absent; pustules or glands absent. Stipules present and persistent to older leaves. Pedicel present, 2.6-3 mm long, hairy. Bracteoles present and persistent. Calyx 7-7.5 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 9-10 mm long, uniformly coloured, yellow; claws present; standard 5-6 mm long, glabrous, not auriculate, wings 4.5-5 mm long, not auriculate, keel 5-6.5 mm long, beaked, not auriculate, glabrous. Stamens ten, at two different levels (filaments alternately long and short); filaments united in an open sheath, 3-6.5 mm long. Ovary stipitate, glabrous; style 7-8 mm long, glabrous, not bearded, terete. Fruit dehiscent (a pod or follicle), stipitate, not constricted between the seeds, round in cross-section, not beaked. Flowers in January, February, March, April, May, June, July, August, September and December. Occurs in the Northern Botanical Province, in the Northern Kimberley, Victoria Bonaparte, Central Kimberley, Ord-Victorian-Plain and Dampierland IBRA regions.