This perennial, herbaceous species has prostrate stems
reaching up to 1.5m long, ranging from glabrous to villous. It has alternate leaf arrangement.
The petioles are ciliate and range from 3 to 5cm in length. It has pinnate, trifoliate leaves, with
leaflets that are round or ovate. The terminal leaflet is 3-7cm; often wider than it is long and
usually larger than the lateral leaflets. Leaflets are villous on both surfaces, and with entire
margins. The stipules are up to 1 cm long and 7mm broad, ovate with acuminate tips. Stipels
are present on all three leaflets, linear and as much as 3mm in length
The inflorescence is a
raceme up to 30cm long, with axilliary and
terminal perigynous flowers. Ovate bracts are
present on the inflorescence axis. The sepals are
zygomorphic, pubescent externally, with a single
lobe on the upper lip and three on the lower lip.
The violet (pink to purple) papilionaceous flower
petals range from 8-11mm long and bear two
white spots edged with dark purple on the base of
the standard. The keel and wings are glabrous.
The 10 stamens are united into a group of 9 and 1
free (diadelphous). The style is curved, ovary
superior, composed of a single carpel.