Northern Prairie Wildlife Research Center


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Aquatic and Wetland Vascular Plants of the Northern Great Plains

Ludwigia L. -- Seedbox

Perennial, fibrous-rooted herbs with floating, creeping or ascending to erect stems, sometimes stoloniferous. Leaves simple, opposite or alternate, entire, subsessile or wing-petioled; stipules minute, deciduous. Flowers solitary in the axils, sessile or nearly so; floral tube not prolonged beyond the ovary; sepals 4, green, persistent; petals 4 or none, minute and greenish when present; stamens 4; stigma unlobed, capitate, style short; ovary obconic to cylindric, often 4-angled, usually with 2 bracteoles at or toward the base. Capsules 4-celled, many-seeded, dehiscent longitudinally or by a terminal pore, sometimes irregularly dehiscent; seeds lacking a coma.

Lead	Characteristic	Go To
1	Leaves opposite.	L. palustris
1	Leaves alternate.	L. polycarpa

31. Onagraceae, the Evening Primrose Family

3. Ludwigia L. -- Seedbox

1. Ludwigia palustris (L.) Ell. -- Marsh seedbox

2. Ludwigia polycarpa Short & Peter -- Many-seed seedbox

Return to Family -- Onagraceae - The Evening Primrose Family
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