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Chasmanthium ornithorhynchum

Chasmanthium ornithorhynchum (Steud.) Yates

Bird-bill Wood-oats, Birdbill Wood-oats, Birdbill Woodoats

Poaceae (Grass family)

Synonym(s): Uniola ornithorhyncha

USDA Symbol: CHOR3

USDA Native Status: L48 (N)


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Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Fruit Type: Caryopsis
Size Notes: Up to about 3 feet tall.

Bloom Information

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


USA: AL , FL , LA , MS , NC , SC
Native Habitat: Stream and river banks in low woods and on hummocks in swamps.

National Wetland Indicator Status

Status: FACW
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

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


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

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