Page author: Don Knoke
Cinna latifolia
slender wood-reed

Distribution: Alaska to Newfoundland, south on both sides of the Cascades, Washington to California, east to Colorado; also Minnesota to Maine, south to Tennessee

Habitat: Moist woods and meadows, sea level to subalpine

Flowers: June - August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Rhizomatous perennial, the culms 7-20 dm. tall, hollow.


Sheaths open, usually glabrous; ligules 3-8 mm. long, pubescent, lacerate; blades flat, 7-15 mm. broad, the veins very unequal in size.


Inflorescence a large, loose panicle 15-30 cm. long, the branches spreading or drooping; spikelets 1-flowered, flattened, articulate below the glumes; glumes slender, acuminate, 3-4 mm. long, the second slightly the longer; lemmas strongly compressed, 2-3.2 mm. long, puberulent on the back, awnless, or with a subterminal awn under 1 mm. long; pales subequal to the lemma, the rachilla prolonged bristle-like behind the palea about 0.6 mm.

Accepted Name:
Cinna latifolia (Trevir. ex Göpp.) Griseb.
Publication: Fl. Ross. 4(13): 435. 1852.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Cinna latifolia in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Cinna latifolia checklist entry.

E-Flora BC: Cinna latifolia atlas page.

CalPhotos: Cinna latifolia photos.

USDA Plants: Cinna latifolia information.

6 photographs:
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