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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Cladus: Commelinids
Ordo: Poales

Familia: Poaceae
Subfamilia: Pooideae
Tribus: Meliceae
Genus: Pleuropogon
Species: P. californicus – P. davyi – P. hooverianus – P. oregonus – P. refractus – P. sabinei

Pleuropogon R.Br., Chlor. Melvill.: 31 (1823)
Type species: Pleuropogon sabinei R.Br., Chlor. Melvill.: 31 (1823)


Lophochlaena Nees, Ann. Nat. Hist. 1: 283 (1838)


Brown, R. (1823) Chloris Melvilliana 31–32, pl. D.
Govaerts, R. et al. 2013. Pleuropogon in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2013 Dec. 7. Reference page.
Simon, B.K., Clayton, W.D., Harman, K.T., Vorontsova, M., Brake, I., Healy, D. & Alfonso, Y. 2013. GrassWorld, Pleuropogon. Published online. Accessed: 2013 Dec. 7. 2013. Pleuropogon. Missouri Botanical Garden. Published online. Accessed: 7 Dec. 2013.
International Plant Names Index. 2013. Pleuropogon. Published online. Accessed: 7 Dec. 2013.

Vernacular names
English: Semaphore grass

Pleuropogon is a genus of Arctic and North American plants in the grass family known generally as semaphore grass.[2][3]

Pleuropogon native primarily to North America, with one species extending into Arctic Eurasia. These are erect grasses with drooping leaves. They grow in wet areas, sometimes even to the point of being partially submerged at times.[4][5]


Pleuropogon californicus (Nees) Benth. ex Vasey - annual semaphore grass - California (from San Luis Obispo Co to Humboldt Co)
Pleuropogon davyi L.D.Benson - northwestern California
Pleuropogon hooverianus (G.T.Benson) Howell - North Coast semaphore grass - California (Mendocino, Sonoma, Marin Cos)
Pleuropogon oregonus Chase - Oregon semaphore grass - Oregon (Lake + Union Cos)
Pleuropogon refractus (A.Gray) Benth. ex Vasey - nodding semaphore grass - California (Del Norte, Humboldt, Mendocino, Marin Cos), Oregon, Washington, British Columbia
Pleuropogon sabinii R.Br. false semaphore grass - Svalbard, Greenland, Nunavut, Yukon, Northwest Territories, Ontario, Quebec, Labrador, Alaska, northern regions of Russian Federation


Kew World Checklist of Selected Plant Families
Brown, Robert 1823. Chloris Melvilliana pages 31–32, plate D
But, P. P. H. 1994. New combinations in Pleuropogon (Poaceae). Novon 4(1): 16–17
Jepson Manual Treatment
USDA Plants Profile

Genus treatment Archived 2011-06-11 at the Wayback Machine

The Plant List search for Pleuropogon
Biota of North America Program 2014 county distribution maps

Plants Images

Biology Encyclopedia

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