Flora of North America species comparison

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Antennaria suffrutescens

Antennaria arcuata

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

box pussytoes, meadow pussytoes
Habit Dioecious. Dioecious.
Plants

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

5–15(–20) cm (stems woolly).
Stolons

none.

4–10 cm (arched).
Basal leaves

absent at flowering.

1–3-nerved, narrowly to broadly spatulate, or narrowly rhombic-obovate, 20–45 × 3–15 mm, tips mucronate, faces densely white-woolly.
Cauline leaves

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

linear, (2–)5–40 mm, not flagged.
Involucres

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

staminate 3–5 mm; pistillate 4.5–6(–7) mm.
Corollas

staminate 4–5 mm; pistillate 5–8 mm.

staminate 2.5–4 mm; pistillate 3.5–5 mm.
Phyllaries

(relatively wide) distally white.

distally whitish (mostly staminate) or grayish stramineous to light brown.
Heads

borne singly.

(4–)7–25, in racemiform to paniculiform or corymbiform arrays.
Cypselae

1–2 mm, papillate;

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

1–1.8 mm, glabrous;

pappi: staminate 3–4.5 mm; pistillate 4–6 mm.
2n

= 28.

= 28.

Antennaria suffrutescens

Antennaria arcuata
Phenology Flowering early summer. Flowering summer.
Habitat Dry, open coniferous woods or barren slopes on serpentine Moist alkaline basins in sagebrush steppe
Elevation 500–1600 m (1600–5200 ft) 1500–2300 m (4900–7500 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
ID; NV; WY
[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 arcuata is known from three widely disjunct areas in Blaine County, Idaho; Elko County, Nevada; and Fremont County, Wyoming (R. J. Bayer 1992). It is characterized by arching stolons and white-woolly indument (Bayer) and is not easily confused with other species of Antennaria.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 408. 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. 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. 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, A. virginica
Name authority Greene: Pittonia 3: 277. (1898) Cronquist: Leafl. W. Bot. 6: 41. (1950)
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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