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14. Pachygone Miers, Ann. Mag. Nat. Hist., ser. 2. 7: 37, 43. 1851.
粉绿藤属 fen lü teng shu
Woody vines. Leaf blade usually ovate, peltate, palmately 3-5-veined. Inflorescences axillary, botryoid, racemose or narrowly paniculate. Male flowers: sepals 6-12, imbricate, outer whorl minute and bracteolelike, inner whorl large; petals 6, small, with basal inflexed auricles clasping opposite stamen; stamens 6, free, anthers corpulent, dehiscing with a transverse slit. Female flowers: sepals and petals as in male flowers; staminodes 6, shorter than petal; carpels 3, with one side swollen, ovate, glabrous, style curved outward. Drupes obovate or rotund, slightly compressed, style scar near base; endocarp bony, reniform-rounded, slightly concave on each side; condyle small, subspatulate. Seed curved; endosperm absent or scanty; cotyledons large, thick, much longer than radicle.
Ten to twelve species: S and SE Asia and Oceania; three species (all endemic) in China.
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Leaf blade puberulent on both surfaces, rather dense abaxially; endocarp irregularly ornamented with branching ridges. |
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3 P. yunnanensis |
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Leaf blade glabrous on both surfaces; endocarp rugose or reticulately ornamented |
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(2) |
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| 2 (1) |
Staminodes 6 in female flower; stamens shorter than petals in male flower; leaves usually ovate, 5-9 × 2-5 cm; endocarp rugose. |
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1 P. sinica |
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Staminodes absent in female flower; stamens longer than petals in male flower; leaves usually broadly ovate, 6-18 × 3-12 cm; endocarp reticulately ornamented. |
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2 P. valida |
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Lower Taxa
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