Eremogone capillaris var. americana

(Maguire) R. L. Hartman & Rabeler

Sida 21: 239. 2004.

Common names: Fescue sandwort
Endemic
Basionym: Arenaria capillaris subsp. americana Maguire Bull. Torrey Bot. Club 74: 41. 1947
Synonyms: Arenaria capillaris var. americana (Maguire) R. J. Davis Eremogone americana
Treatment appears in FNA Volume 5. Treatment on page 60. Mentioned on page 68.

Stems (3–) 5–15 (–25) cm, glabrous and glaucous proximally, stipitate-glandular distally. Pedicels stipitate-glandular. Flowers: sepals stipitate-glandular; ovary often with uniseriate, 3–8-celled hairs in proximal 1/2 or throughout. Capsules often with uniseriate, 3–8-celled hairs in distal 1/2 or throughout. 2n = 22.


Phenology: Flowering late spring–summer.
Habitat: Alpine meadows, talus slopes, aspen woods
Elevation: 1200-3000 m

Distribution

V5 119-distribution-map.gif

Alta., B.C., Idaho, Mont., Nev., Oreg., Wash.

Discussion

M. F. Baad (1969) reported populations from Idaho, Nevada, Oregon, and Wyoming that he considered to be intermediate between var. americana and Eremogone kingii var. glabrescens, and one from central Washington that he considered to be intermediate between var. americana and E. congesta var. prolifera.

Selected References

None.

Lower Taxa

None.
spinose +  and apiculate +
stipitate-glandular +, glabrous +  and glaucous +
rounded;broadly rounded;barely acute +
Ronald L. Hartman +, Richard K. Rabeler +  and Frederick H. Utech +
(Maguire) R. L. Hartman & Rabeler +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
flexuous +, curved +  and straight +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Arenaria capillaris subsp. americana +
filiform +  and subulate or narrowly linear +
not +  and succulent +
reduced +
ovoid;urceolate +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
distal +  and lowest +
Fescue sandwort +
depressed +
dish--shaped +
expanded +
Alta. +, B.C. +, Idaho +, Mont. +, Nev. +, Oreg. +  and Wash. +
1200-3000 m +
straight +  and curved +
central +  and peripheral +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Alpine meadows, talus slopes, aspen woods +
disc--shaped +  and dish +
subcongested +, open +  and 1-12(-18)-flowered +
connate +
0.3mm;0.7mm +
0.1mm;0.3mm +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
stipitate-glandular +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
fugacious +
1.5-2.5 times as long as sepals +
spatulate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering late spring–summer. +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
brown;black +
tuberculate +
ellipsoid +  and ovoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
persistent +
connate +  and distinct +
stipitate-glandular +
ovate;ovatelanceolate +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
branched +  and simple +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
erect;ascending +
stipitate-glandular +, glaucous +  and glabrous +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
[50 +  and 3 +
smooth +  and papillate +
distinct +
filiform +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Arenaria capillaris var. americana +  and Eremogone americana +
stout +  and slender +
Eremogone capillaris var. americana +
Eremogone capillaris +
variety +
ascending;recurved +
divided +
elongate +  and rounded +
10 +  and 8 +
glabrous +  and stipitate-glandular +
rhizomatous +  and taprooted +
plant +, matted +  and cespitose to somewhat +