Potamogeton pectinatus

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Potamogeton pectinatus

Content

Description

Flowers 8-14, with 4 carpels. Fruits broadly obovate to roundish, 3.3-4.7 mm, yellowish brown, beak short.

Distribution

Almost cosmopolitan present, Asia-Tropical: Lesser Sunda Is. present (Bali present); Philippines (Philippines present); Sulawesi (Sulawesi present); Sumatera (Sumatera present), Luzon present, Minahassa present, Palembang present, Solomons present, Toba Lake present
Almost cosmopolitan; in Malesia: Sumatra (Toba Lake, Palembang), Philippines (Luzon), Celebes (Minahassa), Lesser Sunda Islands (Bali), Solomons.

Ecology

In the northern hemisphere regarded as an indicator of polluted water.

Morphology

On a worldwide scale, P. pectinatus is a very variable species with respect to leaf shape and size, branching pattern, as well as fruit shape and size. In Malesia, infraspecific variation is negligible. Only narrow-leaved forms have been found.

Citation

Koord. 1911 – In: Exk. Fl. Java: 88
Mendoza & Del Rosario 1967: Philipp. Aquat. Flow. Pl. Ferns: 41
Hagstr. 1916 – In: Kungl. Svens-ka Vetenskapsakad. Handl.: 39
Miq. 1870: Illus. Fl. Arch. Ind.: 47
Hook.f. 1894 – In: Fl. Brit. India: 567