Andrews, Bot. Rep. 10:t. 624 (1811) var. australis.
Synonymy: Not Applicable
Common name: Australian trefoil, austral trefoil.
Pubescent perennial herb with stiffly erect hollow stems to 60 cm long, often ascending from a woody rootstock; leaves sessile; leaflets 5, obovate-cuneate to narrowly oblanceolate, 10-40 x 2-10 mm, the smaller stipule-like ones embracing the stem, apiculate or obtuse, more or less pubescent with white appressed hairs on both sides; flowers 3-8 in umbels; peduncles axillary, 2-10 cm long, longer than the leaves, with 3 leafy bracts at the summit.
Flowers 10-20 mm long, subsessile; calyx campanulate, 7-11 mm long, pubescent; lobes lanceolate-subulate, usually rather longer than the tube; petals rosy-pink or white; standard ovate-truncate, cuneate, larger than the other petals; wings paler, obovate; keel usually darker, obtusely curved (not angled) along the lower edge, gradually tapering into an obtuse sometimes darker beak.
Pod terete, 30-50 x 2-4 mm, with a slightly raised tip, brown, glabrescent, many-15-seeded; seed suborbicular, c. 2 mm, laterally compressed, dark-brown, smooth.
Cunningham et al. (1982) Plants of western New South Wales, p. 400.
S.Aust.: FR, EP, NL, MU, YP, SL, KI, SE. All States but not central Australia.
Flowering time: apparently the whole year round, commonly in spring.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
Some coastal (including islands) specimens have a greyish appearance with shorter internodes and more distinct nodes on stems which are more flexuose than in inland specimens.
Not yet available