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Aquatic and Wetland Vascular Plants of the Northern Great Plains

Triglochin L. -- Arrow-grass

Perennial, grasslike herbs, tufted from a creeping rootstock. Leaves all basal, slender, terete or somewhat flattened, sheathing at the base, ligulate. Inflorescence a terminal, ebracteate, spikelike raceme; pedicels short and decurrent on the scape axis. Flowers perfect, regular; tepals 6, in 2 series, deciduous; stamens 6, anthers sessile, nearly as large as the tepals; carpels 3 or 6, each with an apical stigma, ovary superior, eventually splitting into 3 or 6, 1-seeded segments. Plants of wet, often alkaline or saline habitats.


Howell, J. T.  1947.  Remarks on Triglochin concinna.  Leafl. W.        
     Bot. 5:13-19.

Lead Characteristic Go To
1 Carpels and stigmas 3; fruits linear-clavate, the fruit axis 3-winged. T. palustris
1 Carpels and stigmas 6; fruits short-cylindric, the fruit axis terete. Lead 2
2 Ligules entire, acute or rounded; leaf blades somewhat flattened, mostly 1.5-3(4) mm wide; plants usually 3 dm or more tall. T. maritima
2 Ligules deeply 2-lobed; leaf blades nearly terete, mostly 0.5-1(1.5) mm wide; plants often less than 3 dm tall. T. concinna

54. Juncaginaceae, the Arrow-grass Family
1. Triglochin L. -- Arrow-grass
1. Triglochin concinna Davy
2. Triglochin maritima L.
3. Triglochin palustris L.

Return to Family -- Juncaginaceae - The Arrow-grass Family
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