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23. Aganosma (Blume) G. Don, Gen. Hist. 4: 77. 1837.
香花藤属 xiang hua teng shu
Echites sect. Aganosma Blume, Bijdr. 1040. 1826; Amphineurion (A. de Candolle) Pichon.
Lianas woody, with white latex. Leaves opposite, interpetiolar line evident. Cymes terminal or axillary, corymblike; bracts and bracteoles sepal-like. Flowers large. Calyx divided halfway or deeper, with 5 or more basal glands inside, sepals usually longer than corolla tube. Corolla white, salverform; tube long cylindric, widened at base; lobes overlapping to right. Stamens inserted at lower third of tube; anthers included, sagittate, adherent to pistil head, cells with a rigid, empty basal tail; disc ringlike or tubular, lobed or dentate, surrounding ovary. Ovaries 2, distinct; ovules numerous. Style short; pistil head conical, apex 2cleft. Follicles linear, terete. Seeds flat, not beaked, coma early deciduous.
About 12 species: tropical and subtropical Asia, five species in China.
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| 1 |
Corolla tube longer than sepals; calyx with a continuous row of basal glands inside; leaves with a strong intramarginal vein |
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1 Aganosma marginata |
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Corolla tube shorter than sepals; calyx with basal glands only inside sepal edges; leaves without a strong intramarginal vein. |
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(2) |
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| 2 (1) |
Corolla glabrous at throat; all parts densely tomentose |
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2 Aganosma cymosa |
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Corolla pubescent at throat; all parts glabrous or minutely pubescent, rarely tomentose. |
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(3) |
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| 3 (2) |
Corolla lobes 2.4-3.5 cm |
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3 Aganosma siamensis |
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Corolla lobes 0.4-1.6 cm. |
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(4) |
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| 4 (3) |
Corolla lobes obovate, apex rounded |
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4 Aganosma schlechteriana |
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Corolla lobes elliptic, apex acuminate |
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5 Aganosma breviloba |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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