Antennaria racemosa

Hooker

Fl. Bor.-Amer. 1: 330. 1834.

Common names: Racemose pussytoes
Endemic
Synonyms: Antennaria petasites Greene Antennaria piperi Rydberg
Treatment appears in FNA Volume 19. Treatment on page 401. Mentioned on page 390, 391, 394, 402, 403, 404, 405, 409.

Dioecious. Plants 12–50 cm (stems stipitate-glandular distally). Stolons 3–8 cm. Basal leaves: 3-nerved, elliptic to oblong, 30–100 × 10–40 mm, tips mucronate, abaxially tomentose, adaxially glabrous. Cauline leaves linear, 10–30 mm, not flagged (apices obtuse to acute). Heads 3–12 in loose, racemiform to paniculiform arrays. Involucres: staminate 4–8 mm; pistillate 7–9 mm. Phyllaries (relatively wide) distally white or light-brown (apices blunt). Corollas: staminate 3–4 mm; pistillate 3–4 mm. Cypselae 1–1.5 mm, glabrous or slightly papillate; pappi: staminate 3–4.5 mm; pistillate 4.5–7 mm. 2n = 28.


Phenology: Flowering summer.
Habitat: Moist, cool, montane and subalpine coniferous forests and roadcuts in forests
Elevation: 1200–3000 m

Distribution

V19-642-distribution-map.gif

Alta., B.C., Calif., Idaho, Mont., Oreg., Wash., Wyo.

Discussion

Antennaria racemosa is characterized by adaxially glabrous basal leaves and open, racemiform to paniculiform arrays of heads (R. J. Bayer 1985b). The young leaves have a slight odor of citronella when crushed. Antennaria racemosa has a pivotal sexual genome of the Catipes group and has contributed to the origin of clones in the A. howellii, A. parlinii, and A. rosea polyploid agamic complexes (Bayer 1985, 1985b, 1990b).

Selected References

None.

Lower Taxa

None.
... more about "Antennaria racemosa"
more or less tomentose +  and sericeous or glabrescent +
scarious +
mostly ovate +  and lanceovate or linear +
racemiform +  and paniculiform +
indeterminate +  and determinate +
Randall J. Bayer +
Hooker +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 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 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Racemose 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 />) +
papillate +
mostly ellipsoid +  and ovoid +
pistillate +  and staminate +
Alta. +, B.C. +, Calif. +, Idaho +, Mont. +, Oreg. +, Wash. +  and Wyo. +
1200–3000 m +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Moist, cool, montane and subalpine coniferous forests and roadcuts in 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 +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
pistillate +  and staminate +
persistent +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering summer. +
Fl. Bor.-Amer. +
bearing subulate enations +, hairy +  and bristly +
flat;convex or ovoid +
exalbuminous +
appendaged +  and truncate +
papillate +
Antennaria petasites +  and Antennaria piperi +
Antennaria racemosa +
Antennaria +
species +
glabrous +  and tomentose +
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 />) +