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Chinese Plant Names | Family List | Potamogetonaceae | Potamogeton

Potamogeton crispus Linn.


Description from Flora of China

Plants perennial, submerged in fresh water. Rhizome present, terete to slightly flattened. Stems creeping at base, terete to slightly flattened and angular, sparsely branched; stiff axillary turions 1-3 cm × 8-15 mm, each a cluster of hard scales formed by strongly shortened, thickened and broadened leaves. Stipules axillary, convolute to shortly connate, 5-10 mm, membranous and evanescent; leaves sessile, broadly linear to narrowly oblong, 3-8 cm × 3-10 mm, 3-7-veined, margin mostly undulate or crispate, serrate, apex obtuse or rounded. Spikes cylindric, with 2-4 whorls of shortly distant opposite flowers; peduncles 14-65(-125) cm. Carpels 4, shortly connate at base. Fruit ovoid, 3.5-4 mm, abaxial keel distinct, few toothed on lower ridge; beak subequal to or longer than body of carpel, slender. Fl. and fr. Apr-Jul. 2n = 52.

Lakes, streams, ponds, paddy fields. Fujian, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Xinjiang, Xizang, Yunnan, Zhejiang [Afghanistan, Bangladesh, Bhutan, India, Indonesia (Sumatra), Japan, Kazakhstan, Korea, Kyrgyzstan, Laos, Mongolia, Myanmar, Nepal, Pakistan, Russia, Tajikistan, Thailand, Turkmenistan, Uzbekistan, Vietnam; Africa, SW Asia, Australia, Europe; introduced in North and South America and Pacific islands (New Zealand)].


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