Antennaria rosulata

Rydberg

Bull. Torrey Bot. Club 24: 300. 1897.

Common names: Kaibab or woolly pussytoes
Endemic
Synonyms: Antennaria sierrae-blancae Rydberg
Treatment appears in FNA Volume 19. Treatment on page 407. Mentioned on page 390, 393, 409.

Dioecious. Plants 0.2–1.5 (–2) cm. Stolons 1–2 (–3.5) cm. Basal leaves 1-nerved, spatulate, spatulate-obovate, or oblanceolate, 6.5–13 × 2–5 mm, tips mucronate, faces silvery gray-pubescent (often obscurely stipitate-glandular). Cauline leaves linear, 2–9 mm, not flagged (apices acute). Heads usually borne singly (rarely 2–3; subsessile among basal leaves). Involucres: staminate 5–7.5 mm; pistillate 6–10 mm. Phyllaries distally white. Corollas: staminate 2.5–4.5 mm; pistillate 3.5–5.5 mm. Cypselae 0.8–1.5 mm, papillate (bases puberulent); pappi: staminate 3.5–5 mm; pistillate 5.5–6.5 mm. 2n = 28.


Phenology: Flowering summer.
Habitat: Open slopes and dry meadows, lower montane to montane, or subalpine zone, usually with big sagebrush, Artemisia tridentata
Elevation: 2200–3300 m

Distribution

V19-658-distribution-map.gif

Ariz., Colo., N.Mex., Utah.

Discussion

Antennaria rosulata is easily recognizable by its silvery gray leaves, dense, humifuse growth form, and heads borne singly (R. J. Bayer 1987b). Its distribution is centered on the four corners area (Bayer and G. L. Stebbins 1987). It has probably contributed to the origins of some of the clones of A. rosea with low stature and low numbers of flowering heads that are found in Arizona, Colorado, New Mexico, and Utah.

Selected References

None.

Lower Taxa

None.
... more about "Antennaria rosulata"
more or less tomentose +  and sericeous or glabrescent +
scarious +
mostly ovate +  and lanceovate or linear +
subcapitate +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Randall J. Bayer +
Rydberg +
0.65 cm6.5 mm <br />0.0065 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
decurrent +
compound +  and simple +
spatulate;oblanceolate;spatulate;oblanceolate;linear;lanceolate;elliptic;cuneate +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Kaibab or woolly pussytoes +
pistillate +  and staminate +
red +, yellow +  and white +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
papillate +
mostly ellipsoid +  and ovoid +
pistillate +  and staminate +
Ariz. +, Colo. +, N.Mex. +  and Utah. +
2200–3300 m +
silvery gray-pubescent +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open slopes and dry meadows, lower montane to montane, or subalpine zone, usually with big sagebrush, Artemisia tridentata +
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 +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
pistillate +  and staminate +
persistent +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
Flowering summer. +
Bull. Torrey Bot. Club +
bearing subulate enations +, hairy +  and bristly +
flat;convex or ovoid +
exalbuminous +
appendaged +  and truncate +
papillate +
Antennaria sierrae-blancae +
Antennaria rosulata +
Antennaria +
species +
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 />) +