The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

withered bluegrass

Habit Plants perennial, dioecious, 20–80 cm tall, loosely to densely cespitose.
Basal branching

mainly pseudointravaginal.

Leaves

sheaths closed approximatly 90% of their length; to near the collar;

ligules 0.5–2 mm long;

blades flat, 1.5–5 mm wide.

Inflorescences

lax, narrowly lanceolate, 6–22 cm; sparse;

branches ascending, 1–3 per node.

Spikelets

3.5–7 mm;

florets (1)2(4);

rachilla internodes about 1 mm long.

Glumes

keels scabrous;

lower glumes 1-veined;

upper glumes shorter than or subequal to lowest lemma.

Calluses

with sparse cobwebby hairs.

Lemmas

narrowly lanceolate, 3.2–5 mm long, distinctly keeled, glabrous; smooth;

tips acuminate.

Anthers

0.5–1.2 mm.

Poa arida

Poa marcida

Distribution
[WildflowerSearch map]
[BONAP county map]
[BONAP county map]
Discussion

Moist, late successional conifer forests. 0–1100m. Casc, CR, Est. WA; north to British Columbia. Native.

Poa marcida has narrow, nodding, few-branched inflorescences with branches that parallel the inflorescence axis. The lemmas are long and taper more gradually than other Poa species. Poa laxiflora also has nodding inflorescences, but its branches are strongly spreading, and its lemma tips are more rounded.

Source Flora of Oregon, volume 1, page 460
Rob Soreng, Barbara Wilson, Richard Brainerd, Nick Otting
Sibling taxa
P. alpina, P. annua, P. bolanderi, P. bulbosa, P. chambersii, P. compressa, P. confinis, P. cusickii, P. fendleriana, P. glauca, P. howellii, P. iconia, P. infirma, P. laxiflora, P. leibergii, P. leptocoma, P. lettermanii, P. macrantha, P. mansfieldii, P. marcida, P. nemoralis, P. nervosa, P. palustris, P. piperi, P. pratensis, P. pringlei, P. reflexa, P. rhizomata, P. secunda, P. stenantha, P. suksdorfii, P. trivialis, P. unilateralis, P. wallowensis, P. wheeleri
P. alpina, P. annua, P. bolanderi, P. bulbosa, P. chambersii, P. compressa, P. confinis, P. cusickii, P. fendleriana, P. glauca, P. howellii, P. iconia, P. infirma, P. laxiflora, P. leibergii, P. leptocoma, P. lettermanii, P. macrantha, P. mansfieldii, P. nemoralis, P. nervosa, P. palustris, P. piperi, P. pratensis, P. pringlei, P. reflexa, P. rhizomata, P. secunda, P. stenantha, P. suksdorfii, P. trivialis, P. unilateralis, P. wallowensis, P. wheeleri
Web links