previous arrow
next arrow

Genus :


Family :



Perennial or annual, erect aromatic herbs. Leaves simple, petiolate, serrate, gland-dotted. Flowers in shortly pedunculate axilary cymes. Bracts small. Calyx tubular or campanulate, 10-nerved, scarcely bilabiate, clearly enlarged in fruits and prominently ribbed, tube with villous hairs, teeth erect, subulate, equal or subequal. Corolla bilabiate, small, inconspicuous, upper lip 2-lobed, lower lip 3-lobed with a saccate base to middle lobe, tube slender, not annulate within, scarcely exserted beyond calyx teeth. Stamens 4, included, didynamous, declinate, thecae unilocular, glabrous. Styles shortly bifid. Nutlets oblong, compressed, emarginate, only 1 or 2 developed.

Key to the species

Serial Key Reference
1a. Flowers not in dense, pungent smell H. suaveolens
1b. Flowers in dense globose heads, not smell 2
2a. Leaves lanceolate or oblanceolate, about 4 times as long as broad, peduncles as long as head H. brevipes
2b. Leaves broadly ovate, twice as long as broad, peduncle twice as long as head H capitata