Flora of North America species comparison

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Antennaria microphylla

Antennaria marginata

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

white margined pussytoes, white-margined everlasting, whitemargin pussytoes
Habit Dioecious. Dioecious or gynoecious (staminate plants in equal frequency as pistillates or none in populations, respectively).
Plants

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

5–20 cm (stems sometimes stipitate-glandular, especially in dioecious diploids).
Stolons

1–5 cm.

2–7 cm (woolly).
Basal leaves

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

1–3-nerved, spatulate, 15–20 × 4–6 mm, tips mucronate, abaxial faces gray-tomentose, adaxial green-glabrous (margins white woolly).
Cauline leaves

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

linear, 7–16 mm, (apices acute) not flagged.
Involucres

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

staminate 4.5–7 mm; pistillate 5–7(–9) mm.
Corollas

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

staminate 3–5 mm; pistillate 4.5–6.5 mm.
Phyllaries

distally bright white to light yellow.

(relatively wide), distally white (apices acuminate).
Heads

6–13 in corymbiform arrays.

5–8 in corymbiform arrays.
Cypselae

0.7–1.2 mm, glabrous or sparingly papillate;

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

0.8–2 mm, glabrous or slightly papillate;

pappi: staminate 3.5–5.5 mm; pistillate 5.5–8.5 mm.
2n

= 28.

= 28, 56, 84, 112, 140.

Antennaria microphylla

Antennaria marginata
Phenology Flowering early–mid summer. Flowering summer.
Habitat Moist open areas, flood plains of streams, margins of alkaline depressions, lower montane to subalpine (subarctic) Moist forests, slopes and tops of ridges under Douglas fir, ponderosa pine, Engelmann spruce or Gambel oaks, openings in the forests
Elevation 0–3200 m (0–10500 ft) 1500–2900 m (4900–9500 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
AZ; CA; CO; NM; TX; Mexico (Chihuahua, Coahuila)
[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 marginata has rims of white hairs (from the abaxial faces) around its adaxially glabrous leaves. It has both dioecious and gynoecious populations and cytotypes ranging from diploid to decaploid (R. J. Bayer and G. L. Stebbins 1987). It is probably a primary sexual progenitor of the A. parvifolia polyploid complex; the two taxa sometimes overlap morphologically; they differ in induments of basal leaves. Antennaria marginata may also be a contributor to the parentage of the A. howellii and A. rosea agamic complexes.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 407. FNA vol. 19, p. 405.
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. geyeri, A. howellii, A. lanata, A. luzuloides, 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 A. dioica var. marginata, A. fendleri, A. marginata var. glandulifera, A. peramoena
Name authority Rydberg: Bull. Torrey Bot. Club 24: 303. (1897) Greene: Pittonia 3: 290. (1898)
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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