Flora of North America species comparison

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Antennaria suffrutescens

Antennaria marginata

evergreen everlasting, evergreen pussytoes, everlasting pussytoes, shrubby pussytoes, Siskiyou everlasting

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

5–12 cm (densely tufted, bases woody; root crowns relatively slender).

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

none.

2–7 cm (woolly).
Basal leaves

absent at flowering.

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

spatulate, 5–12 × 2–4 mm, not flagged (apices emarginate or obtuse, abaxial faces tomentose, adaxial green).

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

staminate 5–9 mm; pistillate 10–15 mm.

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

staminate 4–5 mm; pistillate 5–8 mm.

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

(relatively wide) distally white.

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

borne singly.

5–8 in corymbiform arrays.
Cypselae

1–2 mm, papillate;

pappi: staminate 4.5–5.5 mm; pistillate 7–9 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 suffrutescens

Antennaria marginata
Phenology Flowering early summer. Flowering summer.
Habitat Dry, open coniferous woods or barren slopes on serpentine Moist forests, slopes and tops of ridges under Douglas fir, ponderosa pine, Engelmann spruce or Gambel oaks, openings in the forests
Elevation 500–1600 m (1600–5200 ft) 1500–2900 m (4900–9500 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; CO; NM; TX; Mexico (Chihuahua, Coahuila)
[WildflowerSearch map]
[BONAP county map]
Discussion

Antennaria suffrutescens is characterized by suffrutescent growth form, relatively small, emarginate, adaxially glabrous, coriaceous leaves, and relatively large heads borne singly. It is known only from serpentine soils in open montane pine forests in Curry and Josephine counties, Oregon, and neighboring Del Norte and Humboldt counties, California (R. J. Bayer and G. L. Stebbins 1987). Antennaria suffrutescens may have contributed to the origin of some of the clones of the A. rosea complex (e.g., J. T. Howell 27718, NY).

(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. 408. 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. 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. 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. dioica var. marginata, A. fendleri, A. marginata var. glandulifera, A. peramoena
Name authority Greene: Pittonia 3: 277. (1898) 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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