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

Galium L. -- Bedstraw


Ascending to reclining, often matted perennials from slender rhizomes (those included here), with slender, 4-angled stems and small, simple, entire leaves in whorls of 4-6. Flowers minute, perfect, regular, 1-few in axillary or terminal cymes, the peduncles and pedicels short and slender. Calyx none; corolla white, inconspicuous, rotate, 3- or 4-lobed; stamens equaling the number of corolla lobes, inserted on the tube; styles 2, short, ovary inferior, 2-celled and 2-lobed, the 2 carpels maturing as dry, globose fruit segments which separate at maturity, sometimes one of the carpels abortive.

References:  

Puff, C.  1975.  The Galium trifidum group (Galium sect. 
     Aparinoides, Rubiaceae).  Canad. J. Bot. 54:1911-1945.  

Puff, C. 1977.  The Galium obtusum group (Galium sect. 
     Aparinoides, Rubiaceae). Bull. Torrey Bot. Club 104:202-208.

Lead Characteristic Go To
1 Corolla lobes 4, acute; leaves hispidulous on the margin. Lead 2
1 Corolla lobes 3, obtuse; leaves scaberulous on the margin but not hispidulous. G. trifidum
2 Mature fruit segments 1-1.5 mm in diameter; fruiting pedicels 1-2.5(4) mm long; leaves eventually reflexed, 1-3 mm wide. G. labradoricum
2 Mature fruit segments 2.5-3.5 mm in diameter; fruiting pedicels 5-10 mm long; leaves ascending to spreading, (2)3-5(6) mm wide. G. obtusum


48. Rubiaceae, the Madder Family
1. Galium L. -- Bedstraw
1. Galium labradoricum (Wieg.) Wieg. -- Labrador bedstraw
2. Galium obtusum Bigel. -- Bluntleaf bedstraw
3. Galium trifidum L. -- Small bedstraw


Return to Family -- Rubiaceae - The Madder 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/gengaliu.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:38:16 EST
Sioux Falls, SD [sdww54]