Flora of North America species comparison

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Antennaria microphylla

Antennaria geyeri

little-leaf pussytoes, pink pussytoes, rosy pussytoes, small pussytoes, white pussytoes

Geyer's everlasting mountain pussytoes, Geyer's pussytoes, pinewoods pussytoes
Habit Dioecious. Dioecious.
Plants

9–30 cm (stems stipitate-glandular distally).

3–14 cm (bases woody).
Stolons

1–5 cm.

none.
Basal leaves

1-nerved, spatulate, 6–16 × 2–6 mm, tips mucronate, faces silvery gray-pubescent.

absent at flowering.
Cauline leaves

linear, 5–25 mm, not flagged (apices acute).

linear-lanceolate to cuneate-oblanceolate, 11–35 × 2–6 imm, acute, not flagged (apices acute), faces gray-pubescent.
Involucres

staminate 5–6.5 mm; pistillate 5.5–7 mm.

staminate 6–8 mm; pistillate 6–8 mm.
Corollas

staminate 2.5–3 mm; pistillate 3–4.3 mm.

staminate 3–4.5 mm; pistillate 5–6 mm.
Phyllaries

distally bright white to light yellow.

distally red to pink, light brown, or white.
Heads

6–13 in corymbiform arrays.

3–25 in corymbiform to paniculiform arrays.
Cypselae

0.7–1.2 mm, glabrous or sparingly papillate;

pappi: staminate 3–4 mm; pistillate 3–5 mm.

2–2.5 mm, pubescent and papillate;

pappi: staminate 6–7 mm (capillary); pistillate 6–7 mm.
2n

= 28.

= 28.

Antennaria microphylla

Antennaria geyeri
Phenology Flowering early–mid summer. Flowering summer.
Habitat Moist open areas, flood plains of streams, margins of alkaline depressions, lower montane to subalpine (subarctic) Dry lower montane to montane coniferous forests, usually in ± thick duff under Pinus ponderosa
Elevation 0–3200 m (0–10500 ft) 600–2400 m (2000–7900 ft)
Distribution
from FNA
AK; AZ; CA; CO; ID; MN; MT; ND; NE; NM; NV; OR; SD; UT; WA; WY; AB; BC; MB; NT; NU; ON; QC; SK; YT
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV; OR; WA
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)

Antennaria geyeri is distinctive because it has woody upright branches and is not stoloniferous. It lacks basal leaves at flowering and has heads that are often described as subdioecious (central flowers are often bisexual). As the only member of the Geyerae group, A. geyeri is not closely related to any other species of Antennaria; it bears strong similarities to some species of Anaphalis (R. J. Bayer 1990; Bayer et al. 1996).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 407. FNA vol. 19, p. 396.
Parent taxa Asteraceae > tribe Gnaphalieae > Antennaria Asteraceae > tribe Gnaphalieae > Antennaria
Sibling taxa
A. alpina, A. anaphaloides, A. arcuata, A. argentea, A. aromatica, A. corymbosa, A. densifolia, A. dimorpha, A. dioica, A. flagellaris, A. friesiana, A. geyeri, A. howellii, A. lanata, A. luzuloides, A. marginata, A. media, A. monocephala, A. neglecta, A. parlinii, A. parvifolia, A. plantaginifolia, A. pulchella, A. pulcherrima, A. racemosa, A. rosea, A. rosulata, A. soliceps, A. solitaria, A. stenophylla, A. suffrutescens, A. umbrinella, A. virginica
A. alpina, A. anaphaloides, A. arcuata, A. argentea, A. aromatica, A. corymbosa, A. densifolia, A. dimorpha, A. dioica, A. flagellaris, A. friesiana, A. howellii, A. lanata, A. luzuloides, A. marginata, A. media, A. microphylla, A. monocephala, A. neglecta, A. parlinii, A. parvifolia, A. plantaginifolia, A. pulchella, A. pulcherrima, A. racemosa, A. rosea, A. rosulata, A. soliceps, A. solitaria, A. stenophylla, A. suffrutescens, A. umbrinella, A. virginica
Synonyms A. bracteosa, A. microphylla var. solstitialis, A. nitida, A. rosea var. nitida, A. solstitialis
Name authority Rydberg: Bull. Torrey Bot. Club 24: 303. (1897) A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 107. (1849)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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