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Chinese Plant Names | Family List | Potamogetonaceae | Potamogeton

Potamogeton oxyphyllus Miq.


Description from Flora of China

Potamogeton chongyangensis W. X. Wang.

Plants perennial or annual, submerged in fresh water. Rhizome present or absent. Stems usually creeping at base, filiform, 0.5-1 mm in diam., densely branched; nodal glands absent; turions shootlike, strongly shortened, leafy, axillary or terminating lateral branches. Stipules axillary, free, 6-12 mm, convolute, membranous and translucent, fibrous-persistent; leaves sessile, linear, slightly to distinctly falcate, 3-10 cm × 1.5-3 mm, 5-7-veined with 2-18 faint but visible sclerenchymatous strands, with narrow rows of lacunae bordering midvein, midvein not thickened toward leaf base, base narrowly cuneate, attenuate toward apex, apex acuminate. Spikes in 3 or 4 whorls of opposite flowers, contiguous, broadly cylindric. Carpels 4. Fruit obovoid, 3-3.5 mm, abaxial keels 3, with a sharp midrib, with a short beak ca. 0.5 mm at tip. Fl. and fr. Jun-Oct. 2n = 26.

Ponds and streams, usually in slightly acid water. Anhui, Heilongjiang, Hubei, Jiangsu, Jiangxi, Liaoning, S Shaanxi, Taiwan, Xizang, Yunnan, Zhejiang [Indonesia (Sumatra), Japan, Korea, Russia].


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