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FOC | Family List | FOC Vol. 17 | Lamiaceae

40. Lagochilus Bunge ex Bentham, Labiat. Gen. Spec. 640. 1834.

兔唇花属 tu chun hua shu

Subshrubs or perennial herbs. Rootstocks woody. Stems green-white, rigid, sparsely hirsute. Leaf blade rhombic, palmatipartite or pinnatipartite; lobes spinescent, sometimes subtending sterile spinescent bracteoles. Verticillasters 2-10-flowered. Calyx campanulate to tubular-campanulate, 5-veined; throat oblique, straight; teeth 5, subequal or 3 posterior teeth longer, triangular to oblong or broadly ovate, usually longer than tube, apex spinescent. Corolla villous outside, pilose annulate inside, 2-lipped; upper lip oblong, straight, slightly concave, 2-lobed or 4-toothed; lower lip obliquely spreading, 3-lobed; middle lobe largest, obcordate, 2-lobulate; lateral lobes straight, acute, or emarginate. Stamens 4, exserted or subincluded, anterior 2 longer; filaments complanate; anther cells 2, parallel or divergent, ciliate. Style filiform, apex subequally 2-cleft. Nutlets flattened-obconical, oblong-obovoid or oblong-ovoid, apex truncate or rounded, glandular, dusty hairy, scaly or glabrous, smooth.

About 35 species: Asia, 11 species in China.

1 Leaf axils of sterile branches without spinescent bracteoles.   (2)
+ Leaf axils with spinescent bracteoles.   (5)
2 (1) Calyx tube oblong-lanceolate   4 Lagochilus ilicifolius
+ Calyx teeth triangular.   (3)
3 (2) Calyx tube and bracteoles glabrous   2 Lagochilus bungei
+ Calyx tube and bracteoles hairy.   (4)
4 (3) Calyx teeth erect or slightly oblique, subequal, tube densely bristly; bracteoles densely strigose, capitate glandular   1 Lagochilus hirtus
+ Calyx teeth projected, 2 anterior shorter, tube sparsely hairy at base; bracteoles spreading hairy   3 Lagochilus pungens
5 (1) Calyx teeth 4, rarely 5; apical leaf blade broadly cuneate or flabellate, awned-serrate toward apex   7 Lagochilus xinjiangensis
+ Calyx teeth 5; leaf blade broadly cuneate to rhombic, deeply divided or lobed.   (6)
6 (5) Calyx teeth ovate to broadly ovate, shorter than to as long as tube.   (7)
+ Calyx teeth oblong or lanceolate, longer than tube.   (9)
7 (6) Leaf base cuneate to round; blade 1- or 2-pinnatipartite   8 Lagochilus grandiflorus
+ Leaf base cuneate; blade 3-lobed, lobes toothlike or ovate-oblong.   (8)
8 (7) Leaf blade broadly rhombic, lobes obtuse, spinescent; nodes glabrous   5 Lagochilus diacanthophyllus
+ Leaf blade cuneate-rhombic, lobes spinescent-aristate; basal nodes lanate, apical nodes tomentose   6 Lagochilus lanatonodus
9 (6) Spinescent bracteoles glabrous; calyx tube sparsely villous; upper lip of corolla 2-cleft, middle lobe of lower lip short 2-toothed, lateral lobes dentate   11 Lagochilus kaschgaricus
+ Spinescent bracteoles sparsely hispid or villous; calyx tube densely villous or tomentose, glandular hairy; upper lip of corolla 2- or 3-lobulate, middle lobe of lower lip 2-lobulate or entire.   (10)
10 (9) Calyx teeth ovate, apex acute, tube sparsely tomentose; lobes of upper lip of corolla 2-lobulate, lobes of lower lip entire   10 Lagochilus platyacanthus
+ Calyx teeth broadly ovate, apex rounded, tube densely villous; lobes of upper lip of corolla many lobulate, lobes of lower lip 2-toothed at apex   9 Lagochilus macrodontus

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