Plants of Southern New Jersey

Citizens United to Protect the Maurice River & Its Tributaries
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Plant Profile

Ludwigia alternifolia L. 


Ludwigia alterniolia fall colors
Britton and Brown's line drawing Ludwigia alternifolia
Above and below, Photos by Renee BrechtBritton and Brown. See credits below.**
Ludwigia alternifolia in seedLudwigia alternifolia photo by Robert Mohlenbrock

Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln.

Botanical name: Ludwigia alternifolia L.
Common name: seedbox
Ludwigia alternifolia L. var. linearifolia Britton
Ludwigia alternifolia L. var. pubescens Palmer & Steyerm.
Ludwigia alternifolia L. var. typica Munz
Group: dicot
Family: Onagraceae
Growth Type: forb/herb
Duration: perennial
Origin: native
Plant height: 2-3'
Foliage: leaves alternate, entire, lance shaped and pointed
Flowers: yellow, not notched, 1/2" - 3/4" across
Flowering/fruiting time: Flowers early July to late August; fruits early August to late September; more or less persistent through autumn
Habitat: swamps
Range in New Jersey: statewide
Heritage ranking if any: n/a
Misc.: Seedbox, from the seed capsule which is square at the top.
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 588.
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