Flora of North America species comparison

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Antennaria suffrutescens

Antennaria virginica

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

shale barren pussytoes
Habit Dioecious. Dioecious.
Plants

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

4–25 cm.
Stolons

none.

2–8 cm.
Basal leaves

absent at flowering.

1-nerved, spatulate to cuneate-oblanceolate, 10–25 × 3–9 mm, tips mucronate, faces greenish gray, moderately pubescent.
Cauline leaves

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

linear, 4–20 mm, not flagged (apices acute).
Involucres

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

staminate 3.8–6 mm; pistillate 5–7 mm.
Corollas

staminate 4–5 mm; pistillate 5–8 mm.

staminate 2.2–3.5 mm; pistillate 2.8–4.5 mm.
Phyllaries

(relatively wide) distally white.

distally white or stramineous.
Heads

borne singly.

3–6(–9) in corymbiform arrays.
Cypselae

1–2 mm, papillate;

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

0.8–1.3 mm, slightly papillate;

pappi: staminate 2.8–4(–5) mm; pistillate 3.5–5.2 mm.
2n

= 28.

= 28, 56.

Antennaria suffrutescens

Antennaria virginica
Phenology Flowering early summer. Flowering early–mid spring.
Habitat Dry, open coniferous woods or barren slopes on serpentine Devonian shale barrens and argillaceous soils derived from them, open deciduous woods and fields
Elevation 500–1600 m (1600–5200 ft) 300–600 m (1000–2000 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
MD; OH; PA; VA; WV
[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.)

G. L. Stebbins (1936) and R. J. Bayer and Stebbins (1982) maintained that Antennaria virginica is a distinct species. After previously recognizing the taxon as a variety of A. neglecta, A. Cronquist (1945; H. A. Gleason and Cronquist 1991) agreed. It is a sexual progenitor of the A. howellii complex and is most closely related to A. howellii subsp. neodioica (Bayer 1985). Antennaria virginica is dioecious and is characterized by its relatively small, spatulate, basal leaves and subulate-tipped cauline leaves, which separate it from A. neglecta and the gynoecious A. howellii complex (Stebbins 1935; Bayer and Stebbins).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 408. FNA vol. 19, p. 403.
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. 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
Synonyms A. neglecta var. argillicola, A. neodioica var. argillicola, A. virginica var. argillicola
Name authority Greene: Pittonia 3: 277. (1898) Stebbins: Rhodora 37: 230, figs. 1, 2. (1935)
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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