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Compilation
Erigeron ochroleucus

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Erigeron chrysopsidis Gray, A. [family COMPOSITAE]
Type? of Erigeron ochroleucus Nuttall [family ASTERACEAE]
Type? of Erigeron ochroleucus Nuttall [family ASTERACEAE]
Isotype of Erigeron eatonii A. Gray [family ASTERACEAE]
Syntype of Erigeron eatonii A. Gray [family ASTERACEAE]
Type? of Erigeron ochroleucus Nutt. [family ASTERACEAE]
Isotype of Erigeron parryi Canby & J. N. Rose [family ASTERACEAE]
Type? of Erigeron ochroleucus Nuttall [family ASTERACEAE]
Isotype of Erigeron gracilis Rydb. [family ASTERACEAE]
Original material of Erigeron macounii Greene [family ASTERACEAE]
Lectotype of Erigeron parryi Canby & Rose [family ASTERACEAE]
Type? of Erigeron ochroleucus Nutt. [family ASTERACEAE]
Erigeron ochroleucus Nutt. [family COMPOSITAE]
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Name

Identification
Erigeron ochroleucus Nuttall [family ASTERACEAE ] (stored under name); Verified by Nutt., 1840
Related name
  • Erigeron gracilis
  • Erigeron eatonii
  • Erigeron ochroleucus
  • Erigeron parryi
Common name
  • Buff fleabane, Flora of North America Vol. 20

Flora

Entry for Erigeron ochroleucus Nuttall [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 ochroleucus Nuttall [family COMPOSITAE], Trans. Amer. Philos. Soc., n. s., 7: 311. 1840
Erigeron laetevirens Rydberg [family COMPOSITAE]
Erigeron montanus Rydberg [family COMPOSITAE]
Erigeron ochroleucus var. scribneri (Canby ex Rydberg) Cronquist [family COMPOSITAE]
Erigeron scribneri Canby ex Rydberg [family COMPOSITAE]
Erigeron tweedyanus Canby & Rose [family COMPOSITAE]
Past names
ochroleucum
Treatment Author(s)
Guy L. Nesom
Information
Perennials, (2–)8–18(–20, 30) cm; taprooted, caudices usually simple, rarely branched, relatively thick, woody. Stems ascending (greenish), loosely strigose to puberulent-strigose, sometimes sparsely minutely glandular. Leaves basal (persistent) and cauline (leaf bases broadened or not, not thickened and whitish-indurate); basal blades linear to linear-oblanceolate, (20–)40–90(–120) × 1–4(–5) mm, cauline reduced distally or often little reduced on at least proximal 1/2 of stems, (bases gradually tapering) margins entire (apices acute), abaxial faces glabrous at least on distal 1/4–1/2, strigose proximally, adaxial loosely strigose, eglandular. Heads 1(–3). Involucres 5.5–7 × 10–15(–18) mm. Phyllaries in 3–4 series, densely and loosely hirsuto-villous (hairs whitish, without colored cross walls), minutely glandular. Ray florets 30–62; corollas white to pinkish, bluish, or lavender, (7–)8–12 mm, laminae coiling. Disc corollas 2.8–3.6 mm. Cypselae 2–2.6 mm, 2-nerved, faces sparsely villosulous (often hairs spreading); pappi: outer of setae or scales, inner of 12–15 bristles.
Phenology
jun-aug (summer)
Altitude range
1100–3000(–3300) m;
Distribution
USA AlaskaUSA Mont.USA Nebr.USA S.Dak.USA Wyo.Canada Alta.Canada B.C.
Discussion
Plants recognized as var. scribneri are smaller but otherwise essentially similar to typical plants, except for a tendency to produce bluish rays. They occur mostly at higher elevations than more typical plants. P. Lesica (2005) maintained var. scribneri and mapped the two varietites as essentially congruent in geographic range.

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