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Martin, Edwin M.
Ludwigia alternifolia L.
Onagraceae (Evening-Primrose Family)
Synonym(s): Ludwigia alternifolia var. linearifolia, Ludwigia alternifolia var. pubescens, Ludwigia alternifolia var. typica
USDA Symbol: LUAL2
USDA Native Status: L48 (N), CAN (N)
A many-branched, smooth-stemmed plant with 1 short-stalked, yellow flower in each upper leaf axil.
The few other species of seedboxes in the East have sessile leaves. Seedboxes are mostly wetland plants and bear distinctive, box-like fruit, square on top and filled with many seeds. Other members of the genus do not have such fruit.
Plant CharacteristicsDuration: Perennial Habit: Herb Flower:
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug , Sep
, WV Canada: ON Native Distribution:
Ontario; Massachusetts and New York south to Florida, west to Texas, and north to Nebraska, Iowa, and Wisconsin. Native Habitat:
Swamps and wet soil.
Growing ConditionsLight Requirement: Sun
Soil Moisture: Moist , Wet
Soil Description: Sandy
BenefitConspicuous Flowers: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2007-01-01
Research By: TWC Staff