Antennaria monocephala subsp. angustata

(Greene) Hultén

Ark. Bot., n. s. 7: 135. 1968.

Common names: Narrow-leaved pygmy pussytoes antennaire étroite
Endemic
Basionym: Antennaria angustata Greene Pittonia 3: 284. 1898
Synonyms: Antennaria alpina var. megacephala (Fernald ex Raup) S. L. Welsh Antennaria burwellensis Malte Antennaria congesta Malte Antennaria fernaldiana Polunin Antennaria hudsonica Malte Antennaria megacephala Fernald ex Raup Antennaria pygmaea Fernald Antennaria tansleyi Polunin Antennaria tweedsmuirii Polunin
Treatment appears in FNA Volume 19. Mentioned on page 390, 412.

Gynoecious (staminate plants unknown). Stems usually stipitate-glandular. Basal leaves spatulate to oblanceolate, faces usually gray-pubescent, adaxial sometimes green-glabrescent. 2n = 56, 60?, 70.


Phenology: Flowering summer.
Habitat: Moist tundra, disturbed margins of solifluction lobes, unstable, gravelly slopes
Elevation: 0–2900 m

Distribution

V19-672-distribution-map.gif

Greenland, Alta., B.C., Nfld. and Labr. (Labr.), N.W.T., Nunavut, Que., Yukon, Alaska, Mont., Wyo.

Discussion

Subspecies angustata is apomictic and has a wider geographic range than the amphimictic subsp. monocephala. It is easily recognized by heads borne singly, dark phyllaries, and gynoecious population structure.

Selected References

None.

Lower Taxa

None.
70 +, 60 +  and 56 +
green-glabrescent +
scarious +
mostly ovate +  and lanceovate or linear +
subcapitate +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Randall J. Bayer +
(Greene) Hultén +
0.9 cm9 mm <br />0.009 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
decurrent +
Antennaria angustata +
compound +  and simple +
spatulate;oblanceolate;spatulate;oblanceolate;linear;lanceolate;elliptic;cuneate +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
0.4 cm4 mm <br />0.004 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Narrow-leaved pygmy pussytoes +  and antennaire étroite +
pistillate +  and staminate +
red +, yellow +  and white +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
mostly ellipsoid +  and ovoid +
pistillate +  and staminate +
Greenland +, Alta. +, B.C. +, Nfld. and Labr. (Labr.) +, N.W.T. +, Nunavut +, Que. +, Yukon +, Alaska +, Mont. +  and Wyo. +
0–2900 m +
gray-pubescent +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Moist tundra, disturbed margins of solifluction lobes, unstable, gravelly slopes +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
pistillate +  and staminate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
campanulate;cylindric +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
pistillate +  and staminate +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering summer. +
Ark. Bot., n. s. +
bearing subulate enations +, hairy +  and bristly +
flat;convex or ovoid +
exalbuminous +
appendaged +  and truncate +
papillate +
Antennaria alpina var. megacephala +, Antennaria burwellensis +, Antennaria congesta +, Antennaria fernaldiana +, Antennaria hudsonica +, Antennaria megacephala +, Antennaria pygmaea +, Antennaria tansleyi +  and Antennaria tweedsmuirii +
Antennaria monocephala subsp. angustata +
Antennaria monocephala +
subspecies +
mucronate +
25 cm250 mm <br />0.25 m <br /> (70 cm700 mm <br />0.7 m <br />) +
4 cm40 mm <br />0.04 m <br /> (25 cm250 mm <br />0.25 m <br />) +