Anthoxanthum monticola subsp. alpinum

(Sw. ex Willd.) Soreng
Synonyms: Hierochloe alpina
Treatment appears in FNA Volume 24. Treatment on page 760.

Awns of upper staminate florets 5-10.5 mm, attached from near the base to midlength, usually strongly geniculate, the lower portion twisted, with (1) 2-4 gyres. 2n = 56, 66, 72.

Discussion

Anthoxanthum monticola subsp. alpinum is the common subspecies in the Flora region, extending from western Alaska to eastern Greenland. It extends south to the Canadian border in the Rocky Mountains but, east of these mountains, it is mostly north of 60° N latitude, except in Quebec and Labrador, where it extends south to about 53° N latitude. It usually grows above or north of the tree line, in places that are strongly exposed to the wind and have little snow cover during the winter.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

72 +, 66 +  and 56 +
membranous +  and scarious +
pilose +  and scabrous +
3 +  and 2 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
Kelly W. Allied +  and Mary E. Barkworth +
(Sw. ex Willd.) Soreng +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
keeled +  and rounded +
brown +  and deep purple +
pseudopetiolate +  and branching +
midlength +
swelling +
1 cm10 mm <br />0.01 m <br /> (12 cm120 mm <br />0.12 m <br />) +
not evident +
pilose +  and glabrous +
folded +  and flat +
1mm;3mm +
spikelike +
hairy +  and glabrous +
geniculate +
20 cm200 mm <br />0.2 m <br /> (55 cm550 mm <br />0.55 m <br />) +
not woody +
Maine +, N.H. +, Alta. +, B.C. +, Greenland +, Man. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, N.Y. +, Alaska +, Vt. +  and Mont. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
sometimes longer +
sterile +  and bisexual +
geniculate +
reduced +
5mm +  and 10.5mm +
shorter or longer +
pilose +  and glabrous +
keeled +, lanceolate +  and ovate +
subequal +
0.48 cm4.8 mm <br />0.0048 m <br /> (0.67 cm6.7 mm <br />0.0067 m <br />) +
uncinate +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0 +  and 1/3 +
hairy +  and glabrous +
3-7-veined +  and 3-veined +
geniculate +
0.45 cm4.5 mm <br />0.0045 m <br /> (1.05 cm10.5 mm <br />0.0105 m <br />) +
pubescent +  and hairy +
compressed +
subequal +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
inconspicuous +
lanceolate +
concealed +  and prominent +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
2-keeled +
1cm +  and 8.5cm +
spikelike +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
dry +  and fleshy +
not prolonged +
sessile +  and pedicellate +
10 +  and 20 +
compressed +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Hierochloe alpina +
Anthoxanthum monticola subsp. alpinum +
Anthoxanthum monticola +
subspecies +
membranous +
parallel +  and converging +
plant +  and cespitose +
aquatic +  and terrestrial +