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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.


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
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