familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Poeae
genusPoa
subgenusPoa subg. Poa
sectionPoa sect. Stenopoa
speciesPoa glauca
subspeciesPoa glauca subsp. glauca

Poa glauca subsp. glauca

Robert J. Soreng
Common names: Glaucous bluegrass
Synonyms: Poa ×tormentuosa Poa glauca subsp. glaucantha
Treatment appears in FNA Volume 24. Treatment on page 578.
Please click on the illustration for a higher resolution version.
Illustrator: Sandy Long

Copyright: Utah State University

Culms 10-40 (80) cm. Panicles 3.5-10 (20) cm. Spikelets not bulbiferous; florets normal. Calluses webbed or glabrous; lemmas usually with lateral-veins short-villous to softly puberulent, intercostal regions glabrous or short-villous to softly puberulent. 2n = 34, 42, 44, 47, 48, ca. 49, 50, 56, 60, 63, 64, 65, 70, 75, 78.

Discussion

Poa glauca subsp. glauca is the widespread and common subspecies in the Northern Hemisphere. It is also disjunct in South America. Plants with glabrous calluses are found only in the arctic. In the Rocky Mountains, P. glauca subsp. glauca often grows with subsp. rupicola and P. interior (see previous). It does not grow in California, and is uncommon in the Great Basin and southern Rocky Mountains. It is highly variable, especially in the Great Lakes region. It is often confused in herbaria with subsp. rupicola, but can sometimes be distinguished by its webbed calluses and lemmas that are glabrous between the veins. The name P. glaucantha Gaud, has sometimes been applied to plants of P. glauca from southeastern Canada and the northeastern United States.

Selected References

None.

Lower Taxa

None.

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

... more about "Poa glauca subsp. glauca"
RDF feed
2n chromosome quantity
78 +, 75 +, 70 +, 65 +, 64 +, 63 +, 60 +, 56 +, 50 +, 49 +, 48 +, 47 +, 44 +, 42 +  and 34 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +  and scarious +
Adaxial surface pubescence
puberulent +, hispidulous +, hairy +  and glabrous +
Adaxial surface pubescence or relief
scabrous +
Anther atypical quantity
1 (?) +  and 2 (?) +
Anther atypical some measurement
1 cm10 mm <br />0.01 m <br /> (?) +
Anther quantity
3 +
Anther some measurement
0.12 cm1.2 mm <br />0.0012 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Apex coloration
bronze-colored +
Apex pubescence
ciliolate +
Apex shape
acute +, obtuse +  and prow--shaped +
Arm cell presence
absent +
Auricle presence
absent +
Author
Robert J. Soreng +
Authority
Vahl +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn course
straight +
Awn orientation
arising +
Awn position
basal +  and terminal +
Awn quantity
single +
Awn shape
bent +
Back shape
keeled +  and rounded +
Basal floret quantity
1 +  and 2 +
Basal sheath pubescence
strigose +  and glabrous +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base course
straight +
Base fusion
free +
Base growth form or orientation
decumbent +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base pubescence
hairy +  and glabrous +
Base size
swelling +
Base texture
hard +
Base width
thick +
Blade architecture or arrangement
lax +
Blade architecture or pubescence or relief
smooth +
Blade architecture or shape
folded +
Blade arrangement
parallel +
Blade arrangement or course or shape
linear +
Blade course
straight +
Blade height or length or size
shorter +
Blade orientation
Abruptly ascending (?) +  and Spreading (?) +
Blade prominence
not evident +
Blade prominence or shape
flat +
Blade pubescence or relief
scabrous +
Blade pubescence or texture
soft +
Blade shape
folded +  and flat +
Branch atypical quantity
5 (?) +
Branch course
straight +
Branch height or length or size
short +
Branch orientation
spreading;ascending;erect +
Branch pubescence
hispidulous +, glabrous +, smooth or +  and sparsely densely scabrous +
Branch quantity
2;3 +
Branch shape
angled +
Branch some measurement
0.4 cm4 mm <br />0.004 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Callus development
developed +
Callus pubescence
glabrous +  and webbed +
Callus shape
compressed +  and terete +
Common name
Glaucous bluegrass +
Culm architecture
wiry +
Culm architecture or arrangement or growth form
solitary +
Culm atypical some measurement
80 +
Culm course
straight +
Culm duration
annual +
Culm fragility or size
stout +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm orientation
erect +  and spreading +
Culm quantity
1/10 (1/3) +
Culm shape
compressed +  and terete +
Culm some measurement
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Culm texture
not woody +
Distal floret size
reduced +
Distribution
Wash. +, Maine +, N.H. +, Vt. +, Wis. +, Idaho +, Oreg. +, Wyo. +, N.Mex. +, N.Y. +, Pa. +, Alaska +, Nev. +, Colo. +, Calif. +, Ariz. +, Mich. +, Mont. +, Utah +, Minn. +, Alta. +, B.C. +, Greenland +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +  and S.Dak. +
Embryo quantity
1/4 +  and 1/3 +
Endosperm texture
liquid +, soft +  and hard +
Filament shape
capillary +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
1 +
Floret length or size
sometimes longer +
Floret position or shape
distal +
Floret quantity
2 +  and 5 +
Floret reproduction
bisexual +
Floret shape
compressed +
Floret size
reduced +
Floret variability
normal +
Glume architecture
1-3(5)-veined +
Glume architecture or pubescence or relief
smooth +
Glume architecture or shape
awned +
Glume height or length or size
shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume presence
absent +
Glume pubescence or relief
scabrous +
Glume quantity
2 +
Glume shape
keeled +  and lanceolate +
Glume size
subequal +
Glume variability
equal +
Hair arrangement
distributed +
Hair shape
uncinate +
Hair some measurement
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum position
subbasal +
Hilum quantity
0 +  and 1/6 +
Hilum shape
Oval (?) +  and Round (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Sandy Long +
Inflorescence architecture
compound +
Inflorescence position or structure subtype
terminal +
Inflorescence shape
racemelike +
Inflorescence size
reduced +
Intercostal region architecture
5-7(11)-veined +
Intercostal region coloration
milky white +  and slightly greenish +
Intercostal region pubescence
short-villous +  and softly puberulent +
Internode architecture
hollow +
Internode presence
absent +
Keel architecture or pubescence or relief
smooth +
Keel length or size
long +
Keel pubescence
short-villous +
Keel pubescence or relief
scabrous +
Lateral-vein prominence
obscure +
Lateral-vein pubescence
short-villous +  and softly puberulent +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
5(7-11)-veined +
Lemma architecture or shape
awned +
Lemma arrangement
adjacent +
Lemma height or length or size
shorter +
Lemma length or size
longer +
Lemma position relational
exceeding +
Lemma pubescence
hairy +, glabrous +  and chartaceous +
Lemma quantity
/2 +  and 1 +
Lemma relief
muriculate +
Lemma shape
keeled +, lanceolate +  and broadly lanceolate +
Lemma some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Lemma texture
coriaceous-membranous +
Ligule architecture
erose +  and entire +
Ligule atypical some measurement
5 +
Ligule coloration
white +  and milky white or hyaline +
Ligule presence
absent +
Ligule pubescence
ciliolate +  and smooth +
Ligule shape
lacerate +, truncate +  and acuminate +
Ligule some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ligule texture
membranous +
Lodicule architecture
veined +
Lodicule architecture or pubescence or shape
ciliate +
Lodicule architecture or shape
truncate +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
2 +
Lodicule shape
lobed +  and lanceolate +
Lodicule texture
membranous +
Lower glume architecture
3-veined +
Margin character
length +
Margin coloration
milky white +  and slightly greenish +
Margin pubescence
glabrous +
Margin pubescence or relief
scabrous +
Marginal vein pubescence
short-villous +
Midrib architecture
simple +
Node position
exserted +
Node prominence
concealed +  and prominent +
Node quantity
0 +  and 1 +
Node shape
compressed +  and terete +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +
Palea development
well-developed +
Palea presence
absent +
Palea quantity
2/3 +
Palea shape
2-keeled +
Palea size
subequal +
Panicle architecture
open +
Panicle architecture or arrangement
congested +  and lax +
Panicle atypical some measurement
20 cm200 mm <br />0.2 m <br /> (?) +
Panicle condition or size
contracted +
Panicle l w ratio
3-5 +
Panicle orientation
erect +
Panicle shape
narrowly lanceoloid +  and ovoid +
Panicle size
reduced +
Panicle some measurement
3.5 cm35 mm <br />0.035 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Papilla presence
absent +
Pedicel height or length or size
usually shorter +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pericarp width
thin +
Proximal internode atypical some measurement
4 +
Proximal internode some measurement
1.5 cm15 mm <br />0.015 m <br /> (?) +
Pseudopetiole development
not developed +
Pseudopetiole presence
absent +
Rachilla internode pubescence
glabrous or +  and sparsely densely hispidulous or puberulent +
Rachilla length
prolonged +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath architecture or pubescence or relief
smooth +
Sheath condition
closed +
Sheath length
closed +
Sheath pubescence or relief
scabrous +
Sheath shape
terete +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 807.xml +
Spike architecture
ebracteate +
Spikelet architecture
not bulbiferous +
Spikelet arrangement
mixed +
Spikelet atypical some measurement
9 +
Spikelet fixation
attached +
Spikelet pubescence
glaucous +
Spikelet quantity
many +, 1 +  and 100 +
Spikelet reproduction
viviparous +
Spikelet shape
compressed +
Spikelet some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +  and compound +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Synonyms
Poa ×tormentuosa +  and Poa glauca subsp. glaucantha +
Taxon family
Poaceae +
Taxon name
Poa glauca subsp. glauca +
Taxon parent
Poa glauca +
Taxon rank
subspecies +
Terminal floret reproduction
sexual +
Tissue coloration
hyaline +
Tissue texture
membranous +
Tuft quantity
1 +
Upper glume atypical some measurement
5.2 +
Upper glume size
distinctly shorter +  and subequal +
Upper glume some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
Vein arrangement
parallel +  and converging +
Vein presence
absent +
Vein quantity
2 (?) +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
branching +, not rhizomatous +  and not stoloniferous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
Whole organism pubescence
glaucous +
Whole organism reproduction
unisexual +
X chromosome quantity
7 +