Ballota nigra subsp. foetida

Perennial to 2 m high; branches moderately to densely hairy with short decurved simple hairs and dull sessile glands. Leaves broad-ovate or -elliptic, c. 2–8 cm long, 1–6 cm wide, surfaces discolorous, with scattered spreading to subappressed hairs, apex obtuse, base cuneate, truncate or cordate, margin crenate-serrate; petiole to 4 cm long. Inflorescences usually with 6–10 flowers per axil; bracteoles linear, c. 6–9 mm long. Calyx 7–13 mm long, distally expanded, hairy; lobes 1.5–2.5 mm long, triangular-ovate, with mucro c. 0.5 mm long; corolla 12–15 mm long, lilac to pink, rarely white, tube subequal to calyx, abaxial lip c. glabrous, adaxial lip shortly hirsute, shallowly emarginate.  Flowers Jan.–Apr.