Flora of North America species comparison

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Antennaria marginata

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

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

2–7 cm (woolly).
Basal leaves

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

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

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

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

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

5–8 in corymbiform arrays.
Cypselae

0.8–2 mm, glabrous or slightly papillate;

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

= 28, 56, 84, 112, 140.

Antennaria marginata
Phenology Flowering summer.
Habitat Moist forests, slopes and tops of ridges under Douglas fir, ponderosa pine, Engelmann spruce or Gambel oaks, openings in the forests
Elevation 1500–2900 m (4900–9500 ft)
Distribution
from FNA
AZ; CA; CO; NM; TX; Mexico (Chihuahua, Coahuila)
[WildflowerSearch map]
[BONAP county map]
Discussion

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. 405.
Parent taxa 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. 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. dioica var. marginata, A. fendleri, A. marginata var. glandulifera, A. peramoena
Name authority 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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