Glyceria notata
Glyceria sect. Glyceria
mark glyceria
25-80 cm, rooting at the nodes.
usually scabridulous or hirtellous;
ligules 2-8 mm;
blades 5-30 cm long, 3-11(14) mm wide, abaxial surfaces scabrous, adaxial surfaces sometimes scabridulous to scabrous, sometimes sparsely hairy, sometimes papillose.
compressed, usually at least weakly keeled.
10-45 cm;
branches 2-5 per node, eventually widely spreading;
branches to 12 cm, with 5-15(19) spikelets;
pedicels 1-6 mm.
0.5-5 cm wide if the branches appressed, to 20 cm wide if divergent;
branches usually appressed to ascending, divergent at anthesis;
pedicels 0.5-5 mm.
10-25 mm long, 1.5-3 mm wide, cylindrical and terete except slightly laterally compressed at anthesis, rectangular in side view, with 7-16 florets.
cylindrical and terete, except at anthesis when slightly laterally compressed, rectangular in side view, appressed to the panicle branches, lengths 5-22 times widths.
obtuse to rounded;
lower glumes 1-2.5 mm;
upper glumes 2.5-4.5 mm;
lemmas 3.5-5 mm, the submarginal veins often longer than those adjacent to the midvein, veins scabridulous, smooth or scabridulous between the veins, apices truncate to rounded, crenulate;
paleas from slightly shorter to slightly longer than the lemmas, keels winged distally, apices bifid, teeth about 0.2 mm;
anthers 0.8-1.5 mm.
1.5-2.5 mm.
ovoid-oblong;
hila about as long as the caryopses, linear.
rounded over the back, apices acute to rounded or truncate, entire to irregularly lobed;
paleas keeled, keels usually winged distally, tips parallel or almost so, sometimes extending into teeth, truncate, rounded, or notched between the keels;
lodicules connate;
anthers 3.
= 40.
Glyceria notata
Glyceria sect. Glyceria
Glyceria notata is a Eurasian species that has been reported from scattered locations in the Flora region; the reports have not been verified. In Europe, G. notata grows in rich, organic, wet soils, often near G. fluitans, with which it hybridizes. It is more tolerant of trampling than G. fluitans.
There is no single morphological characteristic that separates Glyceria notata from G. septentrionalis and G. leptostachya. It more frequently has lemmas with short veins adjacent to the midvein than the other two species, is more frequently smooth between the veins, more frequently has scabridulous leaf sheath, and tends to have more spikelets on its branches. The limited cpDNA data indicate that the three are distinct taxa (Whipple et al. [in press]). An intensive examination of the three species is needed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Glyceria sect. Glyceria includes about 15 species. Seven species grow in the Flora region, three of which are introduced. In addition, there is one named hybrid. They grow in and beside shallow, still or slowly moving fresh water, such as along the edges of lakes and ponds and in low areas in wet meadows.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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