Antennaria argentea

Bentham

Pl. Hartw., 319. 1849.

Common names: Silver pussytoes
Endemic
Treatment appears in FNA Volume 19. Treatment on page 397. Mentioned on page 389, 393.

Dioecious. Plants 18–40 cm. Stolons none. Basal leaves: 1–3-nerved, oblanceolate to elliptic, 20–50 × 4–15 mm, tips acute, faces ± gray-tomentose. Cauline leaves lanceolate, 15–45 mm, not flagged. Heads 10–75 in paniculiform arrays. Involucres: staminate 4–5 mm; pistillate 4–5 mm. Phyllaries (relatively broad) distally silvery white. Corollas: staminate 2.5–3.5 mm; pistillate 3–4 mm. Cypselae 1–1.5 mm, glandular; pappi: staminate 4–5 mm; pistillate 3–4 mm. 2n = 28.


Phenology: Flowering summer.
Habitat: Openings in dry coniferous forests
Elevation: 600–2000 m

Distribution

V19-628-distribution-map.gif

Calif., Nev., Oreg., Wash.

Discussion

Antennaria argentea is distinguished by its robustly stoloniferous habit and silvery white phyllaries.

Selected References

None.

Lower Taxa

None.
... more about "Antennaria argentea"
more or less tomentose +  and sericeous or glabrescent +
scarious +
mostly ovate +  and lanceovate or linear +
paniculiform +
indeterminate +  and determinate +
Randall J. Bayer +
Bentham +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 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 +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Silver pussytoes +
pistillate +  and staminate +
red +, yellow +  and white +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
mostly ellipsoid +  and ovoid +
pistillate +  and staminate +
Calif. +, Nev. +, Oreg. +  and Wash. +
600–2000 m +
gray-tomentose +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Openings in dry coniferous forests +
in corymbiform , paniculiform , racemiform or subcapitate , arrays +  and singly +
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 +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
pistillate +  and staminate +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering summer. +
Pl. Hartw., +
bearing subulate enations +, hairy +  and bristly +
flat;convex or ovoid +
exalbuminous +
appendaged +  and truncate +
papillate +
Compositae +
Antennaria argentea +
Antennaria +
species +
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 />) +