Ludwigia alternifolia

seedbox, bushy seedbox, square-pod water-primrose, rattle-box, seed-box
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, savannahs, low woods.