USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

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
Return to Contents

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/vascplnt/genludwi.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:38:27 EST
Reston, VA [vaww55]