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FOC | Family List | FOC Vol. 17 | Lamiaceae

49. Colquhounia Wallich, Trans. Linn. Soc. London, Bot. 13: 608. 1822.

火把花属 huo ba hua shu

Shrubs erect or ascending. Stems and branches terete. Leaves petiolate, with simple or stellate hairs, margin serrate or crenate. Inflorescences pedunculate to subsessile; verticillasters few flowered, in spikes or capitula; bracteoles minute, linear. Pedicel short to obsolete. Calyx tubular-campanulate, 10-veined, glabrous at throat; teeth 5, subequal. Corolla yellow to purple, sometimes spotted, 2-lipped; tube exserted, curved, dilated at throat, not hairy annulate inside; upper lip straight; lower lip ± patent, slightly unequally 3-lobed, middle lobe sometimes emarginate. Stamens 4, reaching upper lip of corolla, anterior 2 longer; filaments slightly hairy; anthers ellipsoid, cells 2, divaricate, apex confluent. Ovary glabrous. Style apex unequally 2-cleft. Nutlets oblong to oblanceolate, flattened dorsiventrally, swollen on 1 side, apex membranous winged.

About six species: Bhutan, China, India, Laos, Myanmar, Nepal, Thailand, Vietnam; five species in China.

1 Leaves with simple hairs only.   (2)
+ Leaves with stellate hairs, sometimes also with simple hairs.   (3)
2 (1) Corolla tube less than 2 × as long as upper lip   5 Colquhounia seguinii
+ Corolla tube more than 3 × as long as upper lip   4 Colquhounia elegans
3 (1) Stem, branches, and abaxial leaf surface densely white lanate-tomentose; calyx 1.2-1.5 cm   2 Colquhounia vestita
+ Stem, branches, and abaxial leaf surface not white lanate-tomentose, sometimes densely gray tomentulose; calyx less than 1 cm.   (4)
4 (3) Young branches and abaxial leaf surface densely gray tomentulose with simple and stellate hairs; leaves 4-5 cm; cymes few flowered, pedunculate, on short branchlets with reduced leaves   3 Colquhounia compta
+ Young branches and abaxial leaf surface rust colored stellate tomentose; leaves 7-11 cm; cymes many flowered, ± pedunculate, on normal lateral branches   1 Colquhounia coccinea

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