Glyceria canadensis var. laxa
Glyceria sect. Striatae
limp mannagrass
not or weakly compressed, midvein often conspicuous distally.
0.8-30 cm wide;
branches usually ascending to strongly divergent or drooping, sometimes appressed.
3-5 mm, with (2)3-5 florets.
oval in side view, lengths 1-4 times widths, laterally compressed.
0.6-1.3 mm;
upper glumes 1.5-2.3 mm, usually rounded, sometimes acute;
lemmas 1.8-2.5 mm.
usually obovoid, sometimes ovoid;
hila punctate or linear.
with apices acute or obtuse to rounded, prow-shaped;
paleas slightly shorter to slightly longer than the lemmas, keels well-developed, tips strongly incurved, apices narrowly notched between the keels;
lodicules free;
anthers 2.
= 60.
Glyceria canadensis var. laxa
Glyceria sect. Striatae
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Members of Glyceria sect. Striatae grow along streams, in swamps, and in shallow, fresh water. The section includes seven species, all of which are native to the Flora region.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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