Erigeron breweri |
Erigeron breweri var. porphyreticus |
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Brewer's daisy, Brewer's fleabane |
Brewer's fleabane, fleabane |
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Habit | Perennials, 7–75 cm; taprooted (taproots usually not collected, often weakly developed), roots and caudices woody, branches rhizomelike (3–15 cm; fibrous-rooted), relatively slender, leafless, ascending. | Plants 20–30 cm; woody roots and relatively slender caudex branches. | ||||||||||||||||
Stems | usually ascending, sometimes prostrate to procumbent or decumbent (var. jacinteus) (often purple, distal branches stiff, spreading-ascending), hispid (hairs spreading-deflexed, 0.1–0.4 mm), mostly eglandular. |
ascending-erect, often wiry and brittle. |
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Leaves | cauline; (ascending) blades narrowly oblong-lanceolate to narrowly obovate, 10–40 × 2–5 mm, margins entire, relatively evenly spaced and sized, hispid, mostly eglandular. |
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Involucres | mostly 4–6 × 9–14 mm. |
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Ray florets | 20–62; corollas white or pink, often drying blue, 4–7 mm, laminae weakly coiling. |
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Disc corollas | 3.5–5.5 mm (throats slightly indurate, not inflated). |
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Phyllaries | in 3–5 series (all but outermost with stramineous margins and distal, greenish-herbaceous, narrowly rhomboid areas), strigoso- to hispido-hirsute or essentially glabrous, densely minutely glandular. |
hispido-hirsute (hairs translucent, spreading, stiff, relatively thick-based), sometimes slightly glandular. |
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Heads | 1 or 2–5(–10) in loosely corymbiform arrays. |
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Cypselae | 2–3 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of (15–)20–35(–50) bristles. |
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Erigeron breweri |
Erigeron breweri var. porphyreticus |
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Phenology | Flowering May–Aug(–Sep). | |||||||||||||||||
Habitat | Open, rocky sites, commonly crevices and ledges, sagebrush, pinyon-juniper, ponderosa pine | |||||||||||||||||
Elevation | (1200–)1300–2700(–3100) m ((3900–)4300–8900(–10200) ft) | |||||||||||||||||
Distribution |
CA; NV
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CA; NV |
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Discussion | Varieties 5 (5 in the flora). Erigeron breweri is treated as a member of E. sect. Linearifolii in G. L. Nesom (1992b), where all of the varieties are mapped in detail. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
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Key |
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Source | FNA vol. 20, p. 316. | FNA vol. 20, p. 317. | ||||||||||||||||
Parent taxa | Asteraceae > tribe Astereae > Erigeron | Asteraceae > tribe Astereae > Erigeron > Erigeron breweri | ||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | E. porphyreticus | |||||||||||||||||
Name authority | A. Gray: Proc. Amer. Acad. Arts 6: 541. (1866) | (M. E. Jones) Cronquist: Brittonia 6: 283. (1947) | ||||||||||||||||
Web links |