UW Burke Herbarium species comparison

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Pleuropogon hooverianus

Pleuropogon refractus

nodding false semaphore grass
Habit Rhizomatous perennial, the culms 10-15 dm. tall, hollow, usually glabrous.
Leaves

Sheathes closed at the base, but open for the upper 2-7 cm.;

ligules 1.5-3.5 mm. long;

blades 3-7 mm. broad, sometimes the uppermost reduced to 1 cm. in length.
Flowers

Inflorescence a loose raceme 10-25 cm. long;

spikelets 5-12, widely spaced, becoming reflexed, 7- to 11-flowered, up to 3 cm. long;

glumes scarious, translucent, the first 4-5 mm. long, the second 6-7 mm. long, somewhat lobed;

lemmas rounded on the back, with 7 prominent, non-converging nerves, 7-8 mm. long, often tri-lobed at the tip, with a terminal awn 3-10 mm. long;

palea shorter than the lemma, with 2 winged keels .

Pleuropogon hooverianus

Pleuropogon refractus
Flowering time May-August
Habitat Bogs, stream banks, swampy meadows,and moist, shaded woods, from near sea level toabout 5000 feet elevation in the mountains.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
P. refractus
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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