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Sphaeromeria cana
(D.C. Eaton) A. Heller
Family:
Asteraceae
[
Tanacetum canum
Eaton]
FNA
Resources
Timothy K. Lowrey, Leila M. Shultz in Flora of North America (vol. 19, 20 and 21)
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.
Heads
usually 3-12 in compact, corymbiform cymes (1-3 cm across), sometimes 1-2.
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).
2
n
= 18.
Flowering Jul-Sep. Crevices in cliffs, dry rocky slopes; 1800-4000 m; Calif., Nev., Oreg.
Sphaeromeria cana
grows in western United States, with northern extension in the Steens Mountains of Oregon.
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