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

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

Introduction to Vascular Plants
Once images have been obtained, photographs of this species will be displayed in this window.Click on the image to enter our photo gallery.
Currently no image is available for this taxon.
E-Flora BC Static Map
Distribution of Leersia oryzoides
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.

Perennial grass from rhizomes; stems smooth, (30) 60-150 (200) cm tall.
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.
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:
Blooming Period:
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


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