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41. Centranthera R. Brown, Prodr. 438. 1810.
胡麻草属 hu ma cao shu
Herbs, mostly annual. Flowers axillary, solitary, short pedicellate. Bracteoles 2. Calyx usually split on 1 side, spathelike, margin entire, apex acute, acuminate, or sometimes obtuse. Corolla funnelform, swelling below throat or distally gradually expanding, somewhat 2-lipped; lobes 5, subequal, erect or spreading. Stamens 4, didynamous; filaments usually hairy; anthers meeting in pairs, locules transverse, base spurred or mucronate, 2-loculed; 1 locule fertile, other reduced and empty. Style apex ligulate, enlarged, stigmatic. Capsule loculicidal; valves entire. Seeds numerous; seed coat loose, spirally striate or reticulate.
About nine species: tropical and subtropical Asia; three species in China.
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| 1 |
Leaves 1-2.6 cm wide, abaxially with 3 longitudinal subparallel bulging veins, margin serrate |
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1 Centranthera grandiflora |
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Leaves to 0.4 cm wide, abaxially with only midvein bulging, margin entire. |
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(2) |
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| 2 (1) |
Stems much branched at base; bracts longer than corolla; corolla ca. 0.9 cm |
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2 Centranthera tranquebarica |
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Stems branched at or above middle; bracts shorter or rarely as long as corolla; corolla 1.5-4 cm |
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3 Centranthera cochinchinensis |
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Lower Taxa
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