Difference between revisions of "Sphaeromeria capitata"
Trans. Amer. Philos. Soc., n. s. 7: 402. 1841.
Common names: Rock tansy
Synonyms: Tanacetum capitatum (Nuttall) Torrey & A. Gray
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Revision as of 18:39, 24 September 2019
Perennials, 5–20 cm (cespitose, bases sometimes woody). Stems erect, ± tomentose. Leaves mostly basal; blades (± cuneate, 8–20 mm) usually 1–2-pinnati-palmately lobed (ultimate lobes ± linear), faces ± tomentose. Heads usually 8–20 in tight, capitate arrays (1–1.3 cm across), sometimes with solitary heads proximal to main arrays. Involucres (2–)3–4 mm. Phyllaries 5–8, tomentose. Receptacles glabrous. Cypselae 1–2 mm (3–5-ribbed, apices with thickened rims, faces glabrous or sparsely gland-dotted).
Phenology: Flowering May–Jul.
Habitat: Dry, rocky hills
Elevation: 1500–2400 m
Distribution
Colo., Mont., Utah, Wyo.
Discussion
Selected References
None.
Lower Taxa
None.