Antennaria microphylla
Antennaria monocephala
little-leaf pussytoes, pink pussytoes, rosy pussytoes, small pussytoes, white pussytoes
one-head pussytoes, pygmy pussytoes, single-head pussytoes
9–30 cm (stems stipitate-glandular distally).
5–13 cm (stems usually stipitate-glandular).
1–5 cm.
2–4 cm.
1-nerved, spatulate, 6–16 × 2–6 mm, tips mucronate, faces silvery gray-pubescent.
1-nerved, spatulate to narrowly spatulate or oblanceolate, 9–18 × 2–4 mm, tips mucronate, abaxial faces tomentose, adaxial glabrous or green-glabrescent, or both gray-pubescent.
linear, 5–25 mm, not flagged (apices acute).
linear, 4–11 mm, flagged.
staminate 5–6.5 mm; pistillate 5.5–7 mm.
staminate 5–7 mm; pistillate 5–8 mm.
staminate 2.5–3 mm; pistillate 3–4.3 mm.
staminate 2.5–3.5 mm; pistillate 3.5–4 mm.
distally bright white to light yellow.
distally brown, dark brown, black, or olivaceous.
6–13 in corymbiform arrays.
usually borne singly (rarely 2–3).
0.7–1.2 mm, glabrous or sparingly papillate;
pappi: staminate 3–4 mm; pistillate 3–5 mm.
1–1.3 mm, usually glabrous;
pappi: staminate 3–4 mm (none in gynoecious populations); pistillate 4–5 mm.
= 28.
= 28, 56, 60?, 70.
Antennaria microphylla
Antennaria monocephala
Antennaria microphylla is a primary sexual progenitor of the A. rosea polyploid agamic complex (R. J. Bayer 1990b). A. Cronquist (1955) included A. rosea within his circumscription of A. microphylla. It is preferable to recognize sexual diploids as distinct from their morphologically discrete hybrid apomictic derivatives. Antennaria microphylla is always dioecious and has stems distally stipitate-glandular and white phyllaries; A. rosea is always gynoecious and has stems without glandular hairs and phyllaries only occasionally white.
Some authors (A. E. Porsild 1950; E. H. Moss 1959; Porsild and W. J. Cody 1980) have recognized A. nitida as distinct; comparisons of the nomenclatural types of the two show that they are conspecific. Antennaria microphylla has allelopathic properties (G. D. Manners and D. S. Galitz 1985).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 2 (2 in the flora).
It seems reasonable to follow in part E. Hultén’s (1968) broad concept of Antennaria monocephala (R. J. Bayer 1991). Hultén circumscribed it as containing three subspecies. The sexual phase of A. monocephala (i.e., subsp. monocephala and subsp. philonipha) is known from southern Alaska, south of the Brooks Range, and to Yukon Territory and adjacent areas of the Northwest Territories and across the Bering Strait on the Chukotka Peninsula. Within his concept of A. monocephala, Hultén also circumscribed the presumably autopolyploid apomictic form of the species as A. monocephala subsp. angustata, thereby extending the range of the species across the Canadian arctic into Greenland and down the western Cordillera into Montana and Wyoming.
Antennaria monocephala subsp. monocephala is an amphimictic progenitor of the A. alpina agamic complex, as well as the sexual progenitor of the apomicts of subsp. angustata.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Plants gynoecious (staminate plants unknown) | subsp. angustata |
1. Plants dioecious (staminates and pistillates in equal frequencies in populations) | subsp. monocephala |
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