UW Burke Herbarium species comparison

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Leymus mollis

Leymus simplex

American dunegrass
Habit Strong perennial with thick rhizomes but forming large clumps, the culms stout, erect, 5-15 dm. tall, usually finely hairy above.
Leaves

Sheaths open, glabrous;

auricles developed on some leaves;

ligules up to 1 mm. long;

blades tough, flat, 6-15 mm. broad, with numerous prominent nerves.

Flowers

Inflorescence a terminal, stout spike 15-30 cm. long and 1-2 cm. thick;

spikelets usually two per node, 20-30 mm. long and 4- to 6-flowered;

glumes lanceolate, acuminate, 15-25 mm. long, prominently 3- to 6-nerved, usually soft-pubescent;

lemmas prominently nerved, 10-20 mm. long, acuminate but not awned, usually copiously soft-hairy;

paleas about equal to the lemmas.

Leymus mollis

Leymus simplex
Flowering time June-August
Habitat Coastal sand dunes, marshes, and headlands, where tolerant of salt water.
Distribution
Occurring west of the Cascades crest in Washington along the immediate marine coastline; Alaska to California, east across Canada to the Great Lakes region and northeastern North America.
[WildflowerSearch map]
[BONAP county map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
L. cinereus, L. condensatus, L. flavescens, L. racemosus, L. triticoides, L. ×vancouverensis
L. cinereus, L. condensatus, L. flavescens, L. mollis, L. racemosus, L. triticoides, L. ×vancouverensis
Subordinate taxa
L. mollis ssp. mollis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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