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5. Ottelia acuminata (Gagnepain) Dandy, J. Bot. 72: 137. 1934.
海菜花 hai cai hua
Leaves wholly submerged; petioles varying greatly in length according to depth of water; leaf blades varying greatly in shape and size, linear to broadly cordate, base cordate to attenuate, margin entire, undulate, or serrulate, apex obtuse. Flowers unisexual. Spathe with 2-6 longitudinal ribs. Male spathe with 40-190 male flowers; sepals green; petals white with yellow base, obcordate or obovate, 1-3.5 cm; stamens 9-12; filaments hairy; anthers ovoid-elliptic; staminodes 3. Female spathe with 2-9 female flowers; perianth similar to male ones; ovary triangular-cylindric with 3 carpels; styles 3, deeply bifid; staminodes 3. Fruit triangular-cylindric to fusiform, ca. 8 cm. Seeds narrowly elliptic, with or without hairs. Fl. May-Oct. 2n = 22*.
● Lakes, ponds, channels, paddy fields, rivers, streams. Guangdong, Guangxi, Guizhou, Hainan, Sichuan, Yunnan.
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| 1 |
Male spathe with 60-190 flowers; female spathe with 8 or 9 flowers. |
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5d var. jingxiensis |
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Male spathe with 40-50 flowers; female spathe with 2 or 3 flowers |
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(2) |
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| 2 (1) |
Male spathe without veins, with bulbs within. |
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5c var. lunanensis |
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Male spathe with several veins, without bulbs within |
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(3) |
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| 3 (2) |
Fruit triangular-conic; leaves not ligulate. |
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5a var. acuminata |
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Fruit slightly curved, fusiform; leaves ligulate. |
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5b var. crispa |
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Lower Taxa
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