Flora of North America species comparison

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Sphaeromeria cana

gray chickensage, gray tansey, tansy
Habit Subshrubs (flowering twigs dying back each year), (5–)15–60 cm (aromatic).
Stems

erect, sericeous-canescent.
Leaves

mostly cauline;

blades (linear or linear-oblanceolate, 10–40 mm) entire or pinnately or subpalmately lobed, faces ± sericeous.
Involucres

2.5–4(–6) mm.
Phyllaries

10–12, canescent. (Disc corollas ochroleucous, lobes villous.) Cypselae 1.8–1.9 mm (apices with irregular, thickened rims, faces glabrous or slightly gland-dotted).
Heads

usually 3–12 in compact, corymbiform cymes (1–3 cm across), sometimes 1–2.
2n

= 18.

Sphaeromeria cana
Phenology Flowering Jul–Sep.
Habitat Crevices in cliffs, dry rocky slopes
Elevation 1800–4000 m (5900–13100 ft)
Distribution
from FNA
CA; NV; OR
[WildflowerSearch map]
Discussion

Sphaeromeria cana grows in western United States, with northern extension in the Steens Mountains of Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 500.
Parent taxa Asteraceae > tribe Anthemideae > Sphaeromeria
Sibling taxa
S. argentea, S. capitata, S. compacta, S. diversifolia, S. potentilloides, S. ruthiae, S. simplex
Synonyms Tanacetum canum
Name authority (D. C. Eaton) A. Heller: Muhlenbergia 1: 7. (1900)
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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