E-Flora BC: Electronic Atlas of the Flora of British Columbia

Leersia oryzoides (L.) Sw.
rice cutgrass
Poaceae (Grass family)

Introduction to Vascular Plants
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Distribution of Leersia oryzoides
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Species Information

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General:
Perennial grass from rhizomes; stems smooth, (30) 60-150 (200) cm tall.
Leaves:
Sheaths rough, the hairs angled backwards; blades (2) 6-10 mm wide, 2-6 (20) cm long, flat, strongly roughened on the margins with the hairs angled backwards, abruptly narrowed just below the base, the 2 margins freed from the sheaths at about the same level; ligules smooth, minutely jagged, more or less fringed with fine hairs, blunt, about 1 mm long.
Flowers:
Inflorescence a panicle, 10-20 cm long, with reduced, axillary panicles in the upper sheaths that often bear spikelets that are small, closed, infertile; glumes lacking; lemmas about 5 mm long, bristly-hairy, unawned; paleas equalling the lemmas; anthers 1-1.5 mm long; lodicules 0.3-0.4 mm long.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Green
Blooming Period:
Indeterminate
Fruit/Seed characteristics:
Colour: Red
Present from Spring to Fall
Source:  The USDA

Habitat / Range

Swamps, lakeshores and wet ditches in the lowland and steppe zones; rare in SC BC (Osoyoos and Ellison Lakes) and SW BC (lower Fraser Valley); circumpolar, E to NB and S to ME, MA, PA, NC, FL, MS, LA, TX, NM, AZ and CA; Eurasia, S America.

Source: The Illustrated Flora of British Columbia

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Homalocenchrus oryzoides (L.) Pollich
Phalaris oryzoides L.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References