''Glyceria canadensis'' is a species of

grass Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in law ...

in the genus '' Glyceria'' which is known by the common name rattlesnake mannagrass. It is native to North America, from

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost Provinces and territories of Canada, province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include ...

Newfoundland Newfoundland and Labrador (; french: Terre-Neuve-et-Labrador; frequently abbreviated as NL) is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region ...

and south to

North Carolina North Carolina () is a state in the Southeastern region of the United States. The state is the 28th largest and 9th-most populous of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, Georgia a ...

. It is commonly found in wet areas.

Habitat

''G. canadensis'' is an obligate wetland species, meaning it will not grow in areas which are not wetlands. These habitats include moist woods, marshes, swamps, wet woods, and shores along streams and lakes.

Description

''Glyceria canadensis'' is a species of perennial bunchgrass which can grow up to 1m tall. The leaves are between 3-8mm wide, as with other species in the genus '' Glyceria'' the leaf sheaths are fused for the majority of their length. Flowers are produced in a

panicle A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit In botany, a fruit is the seed-bearing structure in flowering plants that is ...

typically between June and September depending on location. The panicle is typically open, containing few spikelets and each spikelet tends to droop giving the overall inflorescence a curved shape. Each spikelet is 3-5mm long and contains 5-10 individual florets. The lemmas are 2.9-4mm long. ''G. canadensis'' hybridizes with '' Glyceria grandis'' to form the hybrid ''Glyceria canadenis × grandis''. This hybrid is very similar to ''G. canadensis'' but with spikelets containing between 3-6 florets as opposed to 5-10 found in ''G. canadensis''. The hybrid occurs in the same habitat as ''G. canadensis''. This hybrid has been recognized by some authors as ''Glyceria laxa''.

References

{{Taxonbar, from=Q3109336 canadensis