Compilation
Eucephalus engelmannii

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Name

Identification
Eucephalus engelmannii (D.C. Eaton) Greene [family ASTERACEAE ] (stored under name); Verified by Not on sheet, 2009 Aster elegans (Nutt.) Torr. & A. Gray [family ASTERACEAE ] Verified by Kenton Lee Chambers, Aster elegans (Nutt.) Torr. & A. Gray [family ASTERACEAE ] Verified by Not on sheet,
Related name
  • Aster elegans
  • Eucephalus engelmannii
Common name
  • Engelmann’s aster, Flora of North America Vol. 20

Flora

Entry for Eucephalus engelmannii (D. C. Eaton) Greene [family ]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 20,
Names
Eucephalus engelmannii (D. C. Eaton) Greene [family ], Pittonia, 3: 54. 1896
Aster elegans (Nuttall) Torrey & A. Gray var. engelmannii D. C. Eaton [family COMPOSITAE], in S. Watson, Botany (Fortieth Parallel), 144. 1871 (as engelmanni)
Aster engelmannii (D. C. Eaton) A. Gray [family COMPOSITAE]
Treatment Author(s)
Geraldine A. Allen
Information
Perennials 50–120(–150) cm (with caudices or stout rhizomes). Stems ascending to erect, glabrate or pilose, eglandular to ± densely glandular. Leaves: mid and distal blades elliptic to lance-ovate, 5–10 cm × 15–35 mm, faces glabrous and eglandular to adaxially villous and/or ± glandular. Heads 5–15(–40) in racemiform to corymbiform arrays. Peduncles often stipitate-glandular. Involucres turbinate, 7–10 mm. Phyllaries in 4–6 series (strongly unequal, often reddish apically), linear to lance-ovate, acute to acuminate, pubescent to glandular or glabrate abaxially, villous adaxially, especially distally (appearing ciliate toward tips). Rays usually 8 or 13, white to pink. Cypselae usually pilose; pappus bristles in 2 series, barbellate. 2n = 18.
Phenology
jul-aug (summer)
Altitude range
500–3000 m;
Distribution
USA Colo.USA IdahoUSA Mont.USA Nev.USA UtahUSA Wash.USA Wyo.Canada Alta.Canada B.C.
Discussion
Forms of Eucephalus engelmannii from the Cascade Mountains with leaves more densely pubescent on the abaxial faces may reflect intergradation with E. ledophyllus.

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