Swamp Ludwigia ( Latin: Ludwigia palustris ) is a species of herbaceous plants of the genus Ludwigia ( Ludwigia ) of the Cyprian family ( Onagraceae ).
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Ludwigia palustris ( L. ) Elliott (1817) | |||||||||||||||||||||||
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Botanical Description
Annual or perennial herbaceous plants without pubescence. Rhizome creeping, filiform. The stalk is straight or creeping, tetrahedral, smooth, pale green, sometimes with a red tint, (3) 10-30 (50) cm long. The leaves are opposite, oblong, elliptical or ovoid, tapering into the petiole, sharp, whole-edge, pale reddish-green, shiny, 6-30 mm long. Stipules small, warty.
The flowers are solitary, located in the axils of the leaves. Bracts 2. Four sepals , ovoid or short triangular, acute, 1.5-2 mm long, green, remain with the fruit. No petals . 4 stamens shorter than sepals. Four - ovary ovary . The column is threadlike; stigma capitate, bifid.
Fruit - oblong-obovate, quadrangular, multi-seeded, pale brown capsule , opens with holes in the upper part. Seeds are oblong, smooth, shiny, light brown, the seed is smooth.
Flowering in May β August (September).
Notes
- β For the conventionality of specifying the class of dicotyledons as a superior taxon for the plant group described in this article, see the APG Systems section of the Dicotyledonous article .
Literature
- Skvortsov A.K. Ludwigia palustris (L.) Ell. - Ludwig Swamp // Flora of Eastern Europe / Ed. ed. and ed. volumes N. N. Tsvelev . - SPb. : Peace and Family 95, 1996. - T. IX. - S. 300-301. - 456 p. - 500 copies. - ISBN 5-90016-28-X.
- Steinberg E.I. Ludwigia palustris (L.) Ell. - Ludwig Swamp // Flora of the USSR : 30 tons / started at hand. and under chap. ed. V. L. Komarova . - M .; L .: Publishing House of the Academy of Sciences of the USSR , 1949. - T. 15 / ed. volumes B.K. Shishkin , E.G. Bobrov . - S. 568. - 742 p. - 4000 copies.
Links
- Ludwigia palustris : information on the taxon in the Plantarium project (identifier of plants and illustrated atlas of species). (Retrieved May 15, 2014)