Potamogeton crispus L.

First published in Sp. Pl.: 126 (1753)
This species is accepted
The native range of this species is Old World. It is a hydrosubshrub and grows primarily in the subtropical biome. It is used as a medicine and for food.


Elevation range: 1000–1000 m a.s.l. Naturalised in Colombia. Colombian departments: Bogotá DC, Valle del Cauca.
Herb, Aquatic.
IUCN Red List Assessment (2021): LC.
Habitat according IUCN Habitats Classification: native grassland, artificial - terrestrial.

J. R. Timberlake, E. S. Martins (2009). Flora Zambesiaca, Vol 12 (part 2). Royal Botanic Gardens, Kew

Type Europe, LINN 175.6 (lectotype, designated by Haynes in Taxon 35 567, 1986).
Morphology General Habit
Submerged aquatic herb
Vegetative Multiplication Rhizomes
Rhizomes annual to biennial or perennating, short, strongly branched, compressed, rooting at nodes
Morphology Stem
Stems annual or partly perennial, up to 1.5 m long, 0.5–2.5 mm in greater width, unbranched or sparingly branched, filiform to robust, compressed and somewhat 4-angled with the broader sides grooved; turions of various shapes, mostly formed by axillary, stiff lateral branch with buds of reduced and horny leaf that develop as they are formed, whilst the supporting shoot grows no further Stem anatomy stele oblong with but 1 central bundle and 1 lateral bundle on each side, endodermis of O-type; interlacunar bundles absent; subepidermal bundles absent, pseudohypodermis 1-layered, sometimes absent.
Morphology Leaves
Submerged leaf sessile, linear to linear-oblong, 25–90(132) (4)6–12(18) mm, 5–9(13) times as long as wide, bright green to dark green or occasionally slightly reddish, especially along the midrib, slightly clasping at base, rounded or obtuse at apex, margins finely serrate and usually markedly undulate; longitudinal veins 3–7, the laterals close to margins, with 5–7 pairs of fine transverse or ascending veins; 1–2(3) narrow to broad rows of lacunae bordering the midrib Floating leaf always absent
Morphology Leaves Stipules
Stipules axillary, convolute to shortly united at base, (3)5–12(17) mm long, subtriangular, delicate and translucent, truncate or emarginate at apex, decaying early into fibres
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles 14–70(125) mm long, 3–8 times as long as fruiting spike, as thick as the stem; spikes cylindrical, (4)10–18 mm long in fruit, with flowers contiguous to shortly distant
Morphology Reproductive morphology Flowers
Flowers (3)5–8 in 2–3(5) whorls
Morphology Reproductive morphology Flowers Tepal
Tepals broadly ovate, 1.2–2.1 mm long, green; carpels (2)4
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 0.7–1.3 mm long
Morphology Reproductive morphology Fruits
Fruitlets united at base, ovoid, 2–3.6 × 2–2.5 mm (excluding beak), dark-olive or brownish; dorsal keel distinct, ± denticulate and with a basal tooth, lateral keels distinct, obtuse; beak very prominent, 1.5–2.4 mm, 0.5–0.8 times as long as the fruitlet body, ± falcate, tapering from a broad base to a slender apex
Botswana, Zambia, Zimbabwe, Malawi, Mozambique. Also in North Africa, Sudan, Ethiopia, South Africa, and in Europe, Asia, Australia; introduced in America (from Canada to Argentina) and in New Zealand.
In stagnant and slowly flowing water, showing a preference for eutrophic conditions and often gregarious, growing with Potamogeton octandrus, P. richardii ttelia, Nymphaea, etc.; sea level–1200 m.
Conservation notes Widely distributed; not threatened.

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Naturalizada en Colombia; Alt. 1000 m.; Valle del Cauca.
Morphology General Habit
Hierba, acuática
No Evaluada

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/164434/120217787

LC - least concern


Use Food
Used for food.
Use Medicines
Medical uses.


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