Endostemon tereticaulis (Poir.) M. R. Ashby

tereticaulis: with a terete or cylindric stem

Much-branched perennial herb with densely hairy stems, 20-50 cm tall. Leaves oblanceolate to obovate, covered in soft grey hairs, particularly below; margins crenate. Flowers in axillary clusters; bracts leaf-like; corolla 4-lobed, mauve to deep purple.

Frequent at lower altitudes

from Senegal to Somalia and south to South Africa.