Ludwigia alternifolia
seedbox, bushy seedbox, square-pod water-primrose, rattle-box, seed-box
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Jeff McMillian, Almost Eden
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Family
Onagraceae
Leaf Arrangement
alternate
Leaf Attachment
petiolate, sessile
Leaf Margin
entire
Leaf Type
simple
Leaf Shape
linear, elliptic, lanceolate
Growth Form
forb
Flower Color
yellow
Flower Petals
4
Flower Month
May - October
Height (meters)
0.4 - 1.2
Milky Sap
No
Armed/Unarmed
Unarmed
Origin
native
Lifespan
perennial
Growing Season
Warm season
Leaf Retention
Deciduous
Wetland Class
OBL
Field Characters
The leaves of seedbox are alternate and lanceolate with long petioles (3-10 mm.). Its fruit are rounded, winged cubes with 4 persistent sepals that are 7-10 mm. long.
Habitat
Swamps, wet soils, prairie, ravines, lakeshores, stream banks, roadside ditches, marshes, savannas, low woods.