Flora of North America species comparison

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Erigeron breweri var. porphyreticus

Erigeron breweri var. covillei
Photo is of parent taxon

Brewer's fleabane, fleabane
Photo is of parent taxon

Coville erigeron, Coville's erigeron
Habit Plants 20–30 cm; woody roots and relatively slender caudex branches. Plants (30–)40–75 cm; woody roots or caudices with relatively long and slender branches.
Stems

ascending-erect, often wiry and brittle.

ascending-erect, not wiry or brittle.
Phyllaries

hispido-hirsute (hairs translucent, spreading, stiff, relatively thick-based), sometimes slightly glandular.

hispido-hirsute (hairs white, ascending, relatively thick-based, dense on outermost phyllaries, much less so on mid and inner), eglandular.

Erigeron breweri var. porphyreticus

Erigeron breweri var. covillei
Phenology Flowering May–Aug(–Sep). Flowering May–Sep.
Habitat Open, rocky sites, commonly crevices and ledges, sagebrush, pinyon-juniper, ponderosa pine Open, rocky sites in sagebrush, chaparral, juniper
Elevation (1200–)1300–2700(–3100) m ((3900–)4300–8900(–10200) ft) 1000–1900 m (3300–6200 ft)
Distribution
from FNA
CA; NV
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 317. FNA vol. 20, p. 317.
Parent taxa Asteraceae > tribe Astereae > Erigeron > Erigeron breweri Asteraceae > tribe Astereae > Erigeron > Erigeron breweri
Sibling taxa
E. breweri var. bisanctus, E. breweri var. breweri, E. breweri var. covillei, E. breweri var. jacinteus
E. breweri var. bisanctus, E. breweri var. breweri, E. breweri var. jacinteus, E. breweri var. porphyreticus
Synonyms E. porphyreticus E. covillei, E. foliosus var. covillei
Name authority (M. E. Jones) Cronquist: Brittonia 6: 283. (1947) (Greene) G. L. Nesom: Phytologia 72: 172. (1992)
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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