Glyceria nubigena
Glyceria pulchella
great Smoky Mountain glyceria, great Smoky Mountain mannagrass
beautiful glyceria, graceful mannagrass, Mackenzie Valley mannagrass, slender mannagrass
100-200 cm tall, 3-5 mm thick, smooth.
40-60 cm tall, 1.5-5 mm thick, erect.
smooth or scabridulous, weakly keeled;
ligules 1-1.5 mm, truncate;
blades to 45 cm long, 6-10 mm wide, abaxial surfaces smooth or scabrous, adaxial surfaces scabrous.
scabridulous, not or weakly keeled;
ligules 1.5-4 mm;
blades 9-29 cm long, 2-7.5 mm wide, scabrous.
20-30 cm long, 7.5-14 cm wide, open, pyramidal;
branches 7.5-14 cm, spreading or reflexed, lax, with 16-80 spikelets;
pedicels 2-7 mm.
15-25 cm long, 6-15(20) cm wide, open, pyramidal, nodding;
branches 8-12 cm, ascending to divergent, flexuous, often smooth, with 30-40+ spikelets;
pedicels 0.3-6 mm.
3.5-5.5 mm long, 2-3(3.5) mm wide, laterally compressed, oval in side view, with 3-5 florets.
3.5-6 mm long, 1.4-2.5 mm wide, about 2.5 times longer than wide, laterally compressed, oval in side view, with 3-6 florets.
tapering from below midlength to the narrowly (< 45°) acute apices, veins not extending to the apices;
lower glumes 0.8-1.5 mm;
upper glumes 1.8-2.2 mm;
rachilla internodes about 0.5 mm;
lemmas 2.2-2.7 mm, 0.9-1.1 mm wide in dorsal view, veins distinctly raised, usually smooth over and between the veins, sometimes scabridulous over the veins, apices acute, prow-shaped;
paleas slightly shorter than the lemmas, lengths 2-2.7 times widths, keels not winged, tips incurved, apices narrowly notched between the keels;
anthers 2, about 1.5 mm, dehiscent at maturity.
unequal, lengths about 3 times widths, narrowing beyond midlength, veins terminating below the apices, apices acute, forming an angle of about 45°;
lower glumes 1.5-2 mm;
upper glumes 2-2.6 mm, erose;
rachilla internodes 0.4-0.6 mm;
lemmas 2.5-3.5 mm, oval in dorsal view, 7-veined, veins raised, scabridulous, apices broadly acute to obtuse, prow-shaped;
paleas from shorter than to equaling the lemmas, lengths 3-3.5 times widths, keels not winged, tips incurved, apices narrowly notched between the keels;
anthers 2, 0.5-0.9 mm.
about 1.5 mm.
about 1 mm.
= 40.
= unknown.
Glyceria nubigena
Glyceria pulchella
Glyceria nubigena is known only from moist areas of balds and high ridges in the Great Smoky Mountains of North Carolina and Tennessee.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Glyceria pulchella grows in marshes, muskegs, ponds, and ditches, from central Alaska and the Northwest Territories to southern British Columbia and central Manitoba. In overall aspect, G. pulchella resembles G. striata and G. elata. It differs in having somewhat stiffer and straighter panicle branches, in addition to larger spikelets and florets.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
WildflowerSearch
iNaturalist
USDA Plants Database
BC
PNW Herbaria
