Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
Puccinellia Parl. -- Alkaligrass
Tufted perennials with flat to involute, mostly basal, pale green leaves and
ultimately open panicles, the panicle branches ascending, spreading or reflexed
with age, scabrous. Spikelets few- to several-flowered, elliptic to linear,
subterete, disarticulating above the glumes and between the florets; glumes
unequal, acute or obtuse, scarious at the tip, the first 1-nerved, the second
3-nerved; lemmas rounded on the back, acute to obtuse or truncate, scarious
and often erose at the tip, often puberulent at the base, faintly 5-nerved;
palea about as long as the lemma or shorter, its margins somewhat clasping
the grain. Grain brown, ellipsoid or narrowly so, 1-1.5 mm long, tomentose
at the tip.
Church, G. L. 1949. A cyto-taxonomic study of Glyceria and
Puccinellia. Amer. J. Bot. 36:155-165.
Fernald, M. L. and G. A. Weatherby. 1916. The genus Puccinellia in
eastern North America. Rhodora 18:1-23.
||Lemmas rounded to truncate, not narrowed at the
apex, 1.6-2 mm long; panicle branches reflexed at maturity.
||Lemmas acute to obtuse or rounded, narrowed at
the apex, 1.8-3.2 mm long; panicle branches usually ascending to spreading.
||Anthers 1.2-1.8 mm long; second glume (1)1.5-2.5
mm long; lemmas 2-3.2 mm long.
||Anthers 0.4-1 mm long; second glume 1-2 mm long;
lemmas 1.8-2.5(3) mm long.
63. Poaceae, the Grass Family
25. Puccinellia Parl. -- Alkaligrass
- 1. Puccinellia cusickii Weatherby
-- Cusick's alkaligrass
- 2. Puccinellia distans (L.) Parl.
-- Weeping alkaligrass
- 3. Puccinellia nuttalliana (Schult.)
Hitchc. -- Nuttall's alkaligrass
Return to Family -- Poaceae - The Grass Family
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