Antennaria howellii
Antennaria rosulata
Antennaire de Howell, everlasting pussytoes, Howell's pussytoes, small pussytoes
Kaibab pussytoes, woolly pussytoes
(6–)8–35 cm (stems sometimes stipitate-glandular).
0.2–1.5(–2) cm.
1–9(–12) cm.
1–2(–3.5) cm.
1-nerved, spatulate to oblanceolate, spatulate-obovate, narrowly to broadly ovate, or cuneate-oblanceolate, 20–48(–65) × 2.5–20 mm, tips mucronate, faces abaxially tomentose, adaxially green-glabrous or gray-pubescent.
1-nerved, spatulate, spatulate-obovate, or oblanceolate, 6.5–13 × 2–5 mm, tips mucronate, faces silvery gray-pubescent (often obscurely stipitate-glandular).
linear, 8–40 mm, distal sometimes flagged (apices acute).
linear, 2–9 mm, not flagged (apices acute).
staminate 6–6.5 mm;
pistillate 6–11 mm.
staminate 5–7.5 mm;
pistillate 6–10 mm.
staminate 3–4 mm;
pistillate 3.5–6.5(–8) mm.
staminate 2.5–4.5 mm;
pistillate 3.5–5.5 mm.
(bases sometimes rose) distally white, cream, or light brown.
distally white.
3–15 in corymbiform arrays.
usually borne singly (rarely 2–3; subsessile among basal leaves).
0.8–2 mm, ± papillate;
pappi: staminate 4–4.5 mm;
pistillate 5.5–9 mm.
0.8–1.5 mm, papillate (bases puberulent);
pappi: staminate 3.5–5 mm;
pistillate 5.5–6.5 mm.
= 56, 84, 140 (under A. neodioica).
= 28.
Antennaria howellii
Antennaria rosulata
Subspecies 4 (4 in the flora).
The Antennaria howellii (previously A. neodioica) polyploid complex is highly variable morphologically; four more or less distinct subspecies can be recognized within it. The sexual progenitors of the complex are A. neglecta, A. plantaginifolia, A. racemosa, and A. virginica (see R. J. Bayer 1985). Antennaria marginata may also be a minor contributor to the origins of the complex. A. Cronquist (H. A. Gleason and Cronquist 1991) included members of this complex in A. neglecta; I maintain, because these apomicts are of hybrid polyploid origin from among multiple sexual progenitors, they best not be included within the circumscription of any one sexual progenitor (Bayer 1989d).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Antennaria rosulata is easily recognizable by its silvery gray leaves, dense, humifuse growth form, and heads borne singly (R. J. Bayer 1987b). Its distribution is centered on the four corners area (Bayer and G. L. Stebbins 1987). It has probably contributed to the origins of some of the clones of A. rosea with low stature and low numbers of flowering heads that are found in Arizona, Colorado, New Mexico, and Utah.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Basal leaves green-glabrous adaxially | → 2 |
1. Basal leaves pubescent adaxially (sometimes glabrescent with age) | → 3 |
2. Basal leaves 1-nerved, 20–40 × 6–9 mm; distal cauline leaves flagged; phyllaries distally white or cream | subsp. canadensis |
2. Basal leaves 1–3-nerved, 25–40 × 9–12 mm; distal cauline leaves not flagged; phyllaries distally light brown or white | subsp. howellii |
3. Basal leaves spatulate to narrowly or broadly obovate (petiolate); stolons 3–8(–12) cm (leaves along stolons almost equal to those in rosettes at ends) | subsp. neodioica |
3. Basal leaves cuneate-oblanceolate, spatulate, or spatulate-obovate (without distinct petioles); stolons 4–9 cm (leaves along stolons smaller than in rosettes at ends) | subsp. petaloidea |
- Local floras:
BC, 
OR, 
WA - Local Web sites:
Flora NW, 
Go Botany, 
IL Wildflowers, 
KS Wildflowers, 
MD Biodiversity, 
MI Flora, 
MN Wildflowers, 
PNW Herbaria, Turner Photog. 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
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