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Compilation
Erigeron engelmannii

9 Images see all

Holotype of Erigeron engelmannii A. Nelson [family ASTERACEAE]
Paratype of Erigeron eatonii A. Gray ssp. villosus Cronquist [family ASTERACEAE]
Isotype of Erigeron simulans Greene [family ASTERACEAE]
Isotype of Erigeron engelmannii A. Nelson [family ASTERACEAE]
Paratype of Erigeron eatonii A.Gray subsp. villosus Cronquist [family COMPOSITAE]
Erigeron engelmannii A.Nelson var. arenicola A.Nelson [family ASTERACEAE]
Erigeron engelmannii A. Nelson [family ASTERACEAE]
Isotype of Erigeron simulans Greene [family ASTERACEAE]
Holotype of Erigeron engelmannii A. Nelson subsp. davisii Cronquist [family ASTERACEAE]
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Name

Identification
Erigeron eatonii A.Gray [family COMPOSITAE ] (stored under name); Erigeron engelmannii A.Nelson [family COMPOSITAE ] Verified by Not on sheet, Erigeron eatonii A.Gray [family COMPOSITAE ] Verified by Not on sheet,
Related name
  • Erigeron engelmannii
  • Erigeron eatonii
  • Erigeron simulans
Common name
  • Davis’s fleabane, Flora of North America Vol. 20
  • Engelmann’s fleabane, Flora of North America Vol. 20

Flora

Entry for Erigeron davisii (Cronquist) G. L. Nesom [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 20,
Names
Erigeron davisii (Cronquist) G. L. Nesom [family COMPOSITAE], Sida, 21: 22. 2004
Erigeron engelmannii A. Nelson subsp. davisii Cronquist [family COMPOSITAE], Leafl. W. Bot., 3: 167. 1942 (as engelmanni)
Erigeron engelmannii var. davisii (Cronquist) Cronquist [family COMPOSITAE]
Treatment Author(s)
Guy L. Nesom
Information
Perennials, 10–30 cm; taprooted, caudices simple or with relatively short, thick branches. Stems erect, hirsuto-villous to loosely strigose (hairs relatively translucent and vitreous, unequal in lengths, 0.1–1 mm), sometimes sparsely minutely glandular. Leaves mostly basal (persistent; petioles prominently ciliate, hairs spreading, thick-based), eglandular; blades linear to narrowly oblanceolate, 20–100 × 1–3.5 mm, abruptly reduced distally, margins entire, faces strigose to strigoso-hirsute, eglandular. Heads 1. Involucres 5–8 × 10–15 mm. Phyllaries in 2–3 series, loosely hirsute to hirsuto-villous, sometimes sparsely minutely glandular. Ray florets 50–80; corollas usually white, 8–14 mm, laminae (1.2–1.8 mm wide) coiling. Disc corollas 3.1–4 mm (glabrate, throats not indurate or inflated). Cypselae (obovoid) 2.1–2.5 mm, 2-nerved, faces sparsely to moderately strigoso-villous; pappi: outer of setae, inner of 14–20 bristles.
Conservation Status
of conservation concern;
Phenology
apr-may (spring), jun-jul (summer)
Altitude range
1200–1800 m;
Distribution
USA IdahoUSA Oreg.

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