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Western Wetland Flora

Field Office Guide to Plant Species

Weak Manna Grass
Puccinellia pauciflora (J. Presl) Munz

JPG -- Species Photo JPG -- Distribution Map

Family: Grass (Gramineae)
Flowering: June-August
Field Marks: This Puccinellia has rhizomes and is the only species in the genus with conspicuously nerved lemmas. The leaves are very wide, sometimes as much as 3/4 inch wide.
Habitat: Along streams, marshes, often in standing water.
Habit: Perennial herb with stout rhizomes.
Stems: Spreading at first but becoming upright, unbranched, hollow, up to 4 feet tall, smooth; sheaths on stems with cross-markings.
Leaves: Elongated, flat, up to 3/4 inch wide, without hairs but usually slightly rough to the touch.
Flowers: Borne in spikelets, the spikelets arranged in open panicles up to 10 inches long, the branches of the panicle ascending, spreading, or pointing downward.
Sepals: 0.
Petals: 0.
Stamens: 3.
Pistils: Ovary superior, smooth.
Grains: Oblongoid, smooth.

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Page Last Modified: Saturday, 02-Feb-2013 06:24:14 EST
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