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FNA | Family List | FNA Vol. 20 | Asteraceae | Erigeron

106c. Erigeron breweri A. Gray var. porphyreticus (M. E. Jones) Cronquist, Brittonia. 6: 283. 1947.

Erigeron porphyreticus M. E. Jones, Contr. W. Bot. 8: 33. 1898

Plants 20–30 cm; woody roots and relatively slender caudex branches. Stems ascending-erect, often wiry and brittle. Phyllaries hispido-hirsute (hairs translucent, spreading, stiff, relatively thick-based), sometimes slightly glandular.

Flowering May–Aug(–Sep). Open, rocky sites, commonly crevices and ledges, sagebrush, pinyon-juniper, ponderosa pine; (1200–)1300–2700(–3100) m; Calif., Nev.

Variety porphyreticus is similar to var. breweri in the production of relatively slender, rhizomelike proximal caudex branches, spreading-deflexed stem vestiture, and blue ray corollas; var. porphyreticus differs in its wirier stems, generally greater development of flowering branches, larger heads, and hirsuto-hispid phyllaries with broad, stramineous-indurate margins and lack of green apical patches.


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