Antennaria arcuata

Cronquist

Leafl. W. Bot. 6: 41. 1950.

Common names: Box or meadow pussytoes
EndemicConservation concern
Treatment appears in FNA Volume 19. Treatment on page 396. Mentioned on page 389, 392.

Dioecious. Plants 5–15 (–20) cm (stems woolly). Stolons 4–10 cm (arched). Basal leaves 1–3-nerved, narrowly to broadly spatulate, or narrowly rhombic-obovate, 20–45 × 3–15 mm, tips mucronate, faces densely white-woolly. Cauline leaves linear, (2–) 5–40 mm, not flagged. Heads (4–) 7–25, in racemiform to paniculiform or corymbiform arrays. Involucres: staminate 3–5 mm; pistillate 4.5–6 (–7) mm. Phyllaries distally whitish (mostly staminate) or grayish stramineous to light-brown. Corollas: staminate 2.5–4 mm; pistillate 3.5–5 mm. Cypselae 1–1.8 mm, glabrous; pappi: staminate 3–4.5 mm; pistillate 4–6 mm. 2n = 28.


Phenology: Flowering summer.
Habitat: Moist alkaline basins in sagebrush steppe
Elevation: 1500–2300 m

Discussion

Antennaria arcuata is known from three widely disjunct areas in Blaine County, Idaho; Elko County, Nevada; and Fremont County, Wyoming (R. J. Bayer 1992). It is characterized by arching stolons and white-woolly indument (Bayer) and is not easily confused with other species of Antennaria.

Selected References

None.

Lower Taxa

None.
... more about "Antennaria arcuata"
more or less tomentose +  and sericeous or glabrescent +
scarious +
mostly ovate +  and lanceovate or linear +
racemiform +  and paniculiform or corymbiform +
indeterminate +  and determinate +
Randall J. Bayer +
Cronquist +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0.3 cm3 mm <br />0.003 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 +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Box or meadow pussytoes +
pistillate +  and staminate +
red +, yellow +  and white +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
mostly ellipsoid +  and ovoid +
pistillate +  and staminate +
Idaho +, Nev. +  and Wyo. +
1500–2300 m +
white-woolly +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Moist alkaline basins in sagebrush steppe +
in corymbiform , paniculiform , racemiform or subcapitate , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
pistillate +  and staminate +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
campanulate;cylindric +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 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 /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering summer. +
Leafl. W. Bot. +
bearing subulate enations +, hairy +  and bristly +
flat;convex or ovoid +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
papillate +
Compositae +
Antennaria arcuata +
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 />) +