Ludwigia alternifolia L.

Seedbox (en)

Species

Angiosperms > Myrtales > Onagraceae > Ludwigia

Characteristics

Erect, often freely branched perennial 4–12 dm from a cluster of fleshy-fibrous roots; lvs alternate, lanceolate or lance-linear, acute or acuminate, 5–10 cm, tapering to the sessile or subpetiolar base; pedicels 3–5 mm, with 2 lanceolate bracteoles near the top; fls 4-merous; pet about equaling the sep; stamens 4; fr 5–6 mm, glabrous or hairy, nearly cubic, with rounded base, slightly wing-angled, opening by a terminal pore, and eventually loculicidal; pedicels to about as long as the fr; 2n=16. Swamps and wet soil; Mass. and s. Ont. to Io. and s. Neb., s. to Fla. and Tex. July, Aug. Ozarkian plants, extending e. to s. Ind., tend to be evidently short-hairy, and have been distinguished from the more eastern or northern, essentially glabrous plants, as var. pubescens E. J. Palmer & Steyerm.
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Erect, often freely branched perennial 4–12 dm from a cluster of fleshy-fibrous roots; lvs alternate, lanceolate or lance-linear, acute or acuminate, 5–10 cm, tapering to the sessile or subpetiolar base; pedicels 3–5 mm, with 2 lanceolate bracteoles near the top; fls 4-merous; pet about equaling the sep; stamens 4; fr 5–6 mm, glabrous or hairy, nearly cubic, with rounded base, slightly wing-angled, opening by a terminal pore, and eventually loculicidal; pedicels to about as long as the fr; 2n=16. Swamps and wet soil; Mass. and s. Ont. to Io. and s. Neb., s. to Fla. and Tex. July, Aug. Ozarkian plants, extending e. to s. Ind., tend to be evidently short-hairy, and have been distinguished from the more eastern or northern, essentially glabrous plants, as var. pubescens E. J. Palmer & Steyerm.
Life form perennial
Growth form herb
Growth support aquatic
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system fibrous-root
Rooting depth (meter) -
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light -
Soil humidity -
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Hardiness (USDA) 4-9

Usage

Uses medicinal
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
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Images

Habit

Ludwigia alternifolia habit picture by Brad Kelley (cc-by-sa)

Leaf

Ludwigia alternifolia leaf picture by Straka Kelli (cc-by-sa)
Ludwigia alternifolia leaf picture by Brad Kelley (cc-by-sa)

Flower

Ludwigia alternifolia flower picture by Brad Kelley (cc-by-sa)

Distribution

Ludwigia alternifolia world distribution map, present in Canada and United States of America

Conservation status

Ludwigia alternifolia threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:613307-1
WFO ID wfo-0001087420
COL ID 3WD9S
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Ludwigia ramosissima Ludwigia pruinosa Ludwigia aurantiaca Ludwigia salicifolia Isnardia aurantiaca Ludwigia alternifolia Ludwigia macrocarpa Ludwigia alternifolia var. alternifolia Isnardia alternifolia var. salicifolia Isnardia alternifolia var. uniflora Ludwigia alternifolia var. linearifolia Ludwigia alternifolia var. pubescens Ludwigia angustifolia var. ramosissima