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"
Randall J. Bayer +
Hooker +
Racemose pussytoes +
Alta. +, B.C. +, Calif. +, Idaho +, Mont. +, Oreg. +, Wash. +  and Wyo. +
1200–3000 m +
Moist, cool, montane and subalpine coniferous forests and roadcuts in forests +
Flowering summer. +
Fl. Bor.-Amer. +
Antennaria petasites +  and Antennaria piperi +
Antennaria racemosa +
Antennaria +
species +