Benth. in T.L. Mitchell, J. Trop. Austral. 385 (1848) var. brevidens.
Synonymy: Not Applicable
Common name: Desert indigo.
Greyish somewhat woody perennial sometimes procumbent slender subshrub, with branches to 50 cm long, silky-grey; leaves 3-6 cm long; leaflets 5-15, obovate-cuneate, 3-15 x 1.5-7, obtuse to slightly truncate, mucronate, flat or somewhat conduplicate, grey-pubescent with appressed forked hairs on both surfaces; stipules filiform, 1-2 mm long, grey-pubescent; stipels reduced to reddish filiform glands, less than 1 mm long.
Inflorescence a pedunculate upright raceme, 2.5-25 cm long, at least twice as long as the leaves, with few to many (to 40 or more) flowers, firstly condensed, later loose; pedicels slender, distinct, 0.5-1.5 mm long, white-pubescent; bracts filiform, c. 2 mm long, white-pubescent, caducous; calyx at first campanulate, to 3 mm long, later truncate at the base and oblique at the top, white-pubescent, the unequal teeth spreading; the upper 2 very short or obsolete; the lower 3 distinct, lanceolate, the lowest as long as the tube; petals reddish or pink; standard obovate, 4-7 mm long, slightly silky-grey on the back, distinctly veined; wings narrow-obovate, shorter; keel acute, pubescent on the lower part, often slightly exceeding the standard.
Pod linear, 20-30 x c. 3 mm, greyish-brown, with distinct sutures, white-pubescent, pendulous, 6-12-seeded; seeds oblique, c. 1.5 mm, brown, dull.
Cunningham et al. (1982) Plants of western New South Wales, p. 397.
W.Aust.; N.T.; Qld; N.S.W., generally in sandy plains of dunes.
Flowering time: probably the whole year round, mostly July — Sept.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
Differs from I. australis and I. uncinata in having quite succulent often prostrate stems arising from the woody base.
Not yet available