familyPoaceae
subfamilyPoaceae subfam. Pooideae
genusGlyceria
sectionGlyceria sect. Striatae
speciesGlyceria canadensis
Glyceria canadensis var. laxa
Common names: Limp mannagrass
Endemic
Synonyms: Glyceria laxa
Treatment appears in FNA Volume 24. Treatment on page 80.
Spikelets 3-5 mm, with (2) 3-5 florets. Lower glumes 0.6-1.3 mm; upper glumes 1.5-2.3 mm, usually rounded, sometimes acute; lemmas 1.8-2.5 mm. 2n = 60.
Discussion
Glyceria canadensis var. laxa grows in swamps, bogs, and wet woods, primarily along the eastern seaboard of North America from Nova Scotia to northeastern Tennessee. It is sometimes treated as a hybrid, G. xlaxa (Scribn.) Scribn., but several specimens have dehiscent anthers and well-formed caryopses, indicating that they are not hybrids. The report of 2n = 30 is based on counts for G. xottawaensis.
Selected References
None.
Lower Taxa
None.
"decumbent" is not a number.
... more about "Glyceria canadensis var. laxa"
absent +
common +
absent +
bulliform +
absent +
dehiscent +
absent +
absent +
arising +
single +
purplish +
close +
persistent +
fused +
decumbent +
hard +
thick +
parallel +
evident +
divergent +
appressed +
drooping +
plumose +
glabrous +
blunt +
Limp mannagrass +
annual +
climbing +
floating +
erect +
not woody +
reduced +
capillary +
pistillate +
amalgamated +
sometimes longer +
sterile +
compressed +
reduced +
1-veined +
shorter than to longer than the adjacent lemmas +
subtending +
absent +
much smaller +
narrowing +
5-11-veined +
uncinate +
punctate +
Present +
compound +
hollow +
absent +
not winged +
absent +
distichous +
5-7-veined +
adjacent +
shorter +
longer +
ovate +
equaling +
absent +
lacerate +
scarious +
not winged +
not ciliate +
truncate +
free +
inconspicuous +
lanceolate +
fleshy +
simple +
conspicuous +
absent +
glabrous +
2-veined +
well-developed +
shorter +
slightly longer +
absent +
round +
reduced +
nodding +
pyramidal +
absent +
separating +
absent +
prolonged +
evident +
open +
closed +
3/4 +
keeled +
Endemic +
ebracteate +
mixed +
attached +
sterile +
parallel-sided +
Glyceria canadensis var. laxa +
Glyceria canadensis +
variety +
reduced +
hyaline +
membranous +
winged +
converging +
absent +
ridged +
rhizomatous +
perennial +