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76. Comanthosphace S. Moore, J. Bot. 15: 293. 1877.
绵穗苏属 mian sui su shu
Plants rhizomatous perennial, herbs or subshrubs. Stems usually unbranched, erect. Leaves petiolate or subsessile, dentate. Verticillasters 6-10-flowered, in long, terminal, densely white stellate tomentose spikes; bracts leaflike or scalelike, early deciduous; bracteoles indistinct, minute. Calyx tubular-campanulate, inconspicuously 10-veined, stellate tomentose outside, glabrous inside; teeth 5, short triangular, apex acute, anterior 2 longer. Corolla reddish to purple, 2-lipped; tube funnelform, villous annulate near middle; upper lip 2-lobed or occasionally entire; lower lip 3-lobed, middle lobe ovate, spreading, concave, ± saccate; lateral lobes erect, smaller than middle lobe. Stamens 4, anterior 2 longer, much exserted; filaments glabrous; anthers ovoid, cells 1, transversely dehiscent. Ovary brown, glabrous, glandular. Nutlets triquetrous, ellipsoid, yellow-brown, golden glandular.
About six species: China, Japan; three species in China.
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| 1 |
Stems, petioles, midribs, and lateral veins spreading bearded setose; leaf apex cuspidate; bracts mucronate; corolla annulus narrow, sparse |
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2 Comanthosphace japonica |
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Stems, petioles, midribs, and lateral veins glabrous or subglabrous or stellate tomentose; leaf apex acuminate; bracts acute; corolla annulus broad, dense. |
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(2) |
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| 2 (1) |
Leaf blade ovate-oblong to elliptic, 4-8(-9.5) cm wide; spikes 12-18(-40) cm, interrupted basally |
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1 Comanthosphace ningpoensis |
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Leaf blade ovate, 3.5-4 cm wide; spikes ca. 10 cm, nearly continuous |
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3 Comanthosphace nanchuanensis |
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Lower Taxa
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