Antennaria friesiana subsp. neoalaskana

(A. E. Porsild) R. J. Bayer & Stebbins

Canad. J. Bot. 71: 1596. 1993.

Common names: Frost boil or outcrop pussytoes
Endemic
Basionym: Antennaria neoalaskana A. E. Porsild Sargentia 4: 71. 1943
Treatment appears in FNA Volume 19. Treatment on page 414. Mentioned on page 390, 413, 415.
Revision as of 20:54, 5 November 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Dioecious (staminates and pistillates in equal frequencies in populations). Plants 7.5–14 cm. Stolons 1–4 cm. Cauline leaves 4–20 mm. Heads 2–6. Involucres: staminate 4–6.5 mm; pistillate 7–8 mm. Corollas: staminate 2.5–3 mm; pistillate 3–4.5 mm. Cypselae 1.2–1.8 mm; pappi: staminate 3–4 mm; pistillate 3.5–5 mm. 2n = 56.


Phenology: Flowering summer.
Habitat: Arctic and alpine tundra, on dry rocky outcrops, fell fields, or gravelly frost boils
Elevation: 600–1500 m

Discussion

Subspecies neoalaskana is dioecious (sexual) and occurs from the eastern Brooks Range, Alaska, to the Richardson Mountains and into the central MacKenzie Mountains, on the Yukon-Northwest Territories boundary (R. J. Bayer 1993). It intergrades somewhat with the other two subspecies of Antennaria friesiana; it can be separated from other arctic members of Antennaria because it is dioecious and has 2–6 heads and well-developed stolons. It is a likely progenitor of the A. alpina complex.

Selected References

None.

Lower Taxa

None.
Randall J. Bayer +
(A. E. Porsild) R. J. Bayer & Stebbins +
Antennaria neoalaskana +
Frost boil or outcrop pussytoes +
N.W.T. +, Yukon +  and Alaska. +
600–1500 m +
Arctic and alpine tundra, on dry rocky outcrops, fell fields, or gravelly frost boils +
Flowering summer. +
Canad. J. Bot. +
Compositae +
Antennaria friesiana subsp. neoalaskana +
Antennaria friesiana +
subspecies +