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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Patis racemosa

Patis racemosa (Sm.) Romasch., P.M. Peterson & R. J. Soreng

Blackseed Rice Grass, Blackseed Ricegrass

Poaceae (Grass family)

Synonym(s): Oryzopsis racemosa, Piptatherum racemosum

USDA Symbol: PARA2

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


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Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Fruit Type: Caryopsis
Size Notes: Up to about 32 inches tall.

Bloom Information

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


USA: CT , DE , IA , IL , IN , KY , MA , MD , ME , MI , MN , MO , ND , NE , NH , NJ , NY , OH , PA , RI , SD , TN , VA , VT , WI , WV
Canada: ON , QC
Native Habitat: Usually in deciduous woods, less often in open pine woods, in rocky, mountainous areas.

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


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

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