Poa bulbosa subsp. vivipara

(Koel.) Arcang.
Treatment appears in FNA Volume 24.
Please click on the illustration for a higher resolution version.
Illustrator: Sandy Long

Copyright: Utah State University

Culms 15-60 cm. Spikelets bulbiferous; florets modified into leafy bracts, sometimes the basal florets within a spikelet more or less normal. Calluses usually sparsely webbed, sometimes glabrous; lemmas glabrous or softly puberulent over the keel and lateral-veins, sometimes between the veins; anthers in the least deformed florets 1.2-1.5 mm or aborted late in development, absent from modified florets. 2n = 21, 28, 31, 32, 33, 34, 35, 37, 39, 42+1, 44, 46, 48, 49.

Discussion

Poa bulbosa subsp. vivipara was introduced from Europe into the Pacific Northwest as a forage grass; it has since spread across temperate areas of the Flora region, particularly in the Pacific Northwest and northern Great Basin. It is highly tolerant of grazing and disturbance.

Selected References

None.

Lower Taxa

None.

No values specified."decumbent" is not a number.

49 +, 48 +, 46 +, 44 +, 1 +, 39 +, 37 +, 35 +, 34 +, 33 +, 32 +, 31 +, 28 +  and 21 +
membranous +  and scarious +
puberulent +, hispidulous +, hairy +  and glabrous +
0.6 cm6 mm <br />0.006 m <br /> (?) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
scarious-hyaline +
acute +  and obtuse +
Robert J. Soreng +
(Koel.) Arcang. +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
keeled +  and rounded +
strigose +  and glabrous +
intravaginal +, extravaginal +, branching +  and basal +
swollen +
swelling +
not evident +
involute +, folded +  and flat +
ascending;spreading +
hispidulous +, glabrous +, smooth or +  and sparsely densely scabrous +
0.5 cm5 mm <br />0.005 m <br /> (20 cm200 mm <br />0.2 m <br />) +
glabrous +  and webbed +
compressed +  and terete +
unbranched +  and hollow +
spreading +  and erect +
15 cm150 mm <br />0.15 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Wash. +, Del. +, Wis. +, W.Va. +, N.J. +, N.Y. +, Wyo. +, N.Mex. +, Tex. +, La. +, N.C. +, Tenn. +, Pa. +, Nev. +, Va. +, Colo. +, Calif. +, Ark. +, Vt. +, Ill. +, Ga. +, Ind. +, Iowa +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Ariz. +, Idaho +, Conn. +, Md. +, Mass. +, Ohio +, Utah +, Mo. +, Minn. +, Mich. +, Kans. +, Mont. +, Oreg. +  and Ky. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
additional +, 3 +  and 7 +
deformed +
reduced +
aborted +, 1.2mm +  and 1.5mm +
1-3(5)-veined +
shorter or longer +
subtending +
unequal +
distributed +
wrinkled +
uncinate +
0.1 cm1 mm <br />0.001 m <br /> (?) +
0 +  and 1/6 +
Oval (?) +  and Round (?) +
milky white +  and slightly greenish +
puberulent +  and glabrous +
puberulent +  and long-villous +
5(7-11)-veined +
puberulent +  and glabrous +
keeled +  and lanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +
erose +  and entire +
white +  and milky white or hyaline +
ciliolate +  and smooth +
obtuse +  and acute +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
membranous +
inconspicuous +
lobed +  and lanceolate +
milky white +  and slightly greenish +
glabrous +, scabrous +  and smooth +
concealed +  and prominent +
0 +  and 5 +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
0.8 cm8 mm <br />0.008 m <br /> (?) +
erect +  and nodding +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
dry +  and fleshy +
Introduced +
many +, 1 +  and 100 +
compressed +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
Poa sect. Bolbophorum +
Poa bulbosa subsp. vivipara +
Poa bulbosa +
subspecies +
membranous +
parallel +  and converging +
branching +, not stoloniferous +  and not rhizomatous +
aquatic +  and terrestrial +