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Calamagrostis sesquiflora

Calamagrostis sesquiflora (Trin.) Tzvelev

One and a Half Flower Reedgrass, One-and-a-half-flower Reed Grass

Poaceae (Grass family)

Synonym(s): Calamagrostis arctica, Calamagrostis purpurascens ssp. arctica, Calamagrostis purpurascens ssp. tasuensis, Calamagrostis purpurascens var. arctica, Calamagrostis purpurascens var. tasuensis, Calamagrostis vaseyi

USDA Symbol: CASE24

USDA Native Status: L48 (N), AK (N), CAN (N)


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Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Fruit Type: Caryopsis
Size Notes: Up to about 20 inches tall.

Bloom Information

Bloom Color: Green , Purple , Brown
Bloom Time: Jun , Jul , Aug , Sep


Canada: BC
Native Habitat: Open heath, meadows, forest openings, at the base of open rocky cliffs and knolls, as well as in moist talus.

Web Reference

Webref 32 - Grasses of Canada, the U.S., and Mexico - North America north of Mexico (all countries, provinces, states, territories) (2019) Open Herbarium (
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Calamagrostis sesquiflora in USDA Plants
FNA: Find Calamagrostis sesquiflora in the Flora of North America (if available)
Google: Search Google for Calamagrostis sesquiflora


Record Modified: 0000-00-00
Research By: CBR

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