Compilation
Erigeron rudis

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Name

Identification
Isotype of Erigeron rudis Wooton and Standl. [family ASTERACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Erigeron rudis
  • Erigeron macranthus
  • Erigeron platyphyllus
Common name
  • Sticky tall fleabane, Flora of North America Vol. 20

Flora

Entry for Erigeron vreelandii Greene [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 vreelandii Greene [family COMPOSITAE], Bull. Torrey Bot. Club, 32: 125. 1905
Erigeron patens Greene [family COMPOSITAE]
Erigeron platyphyllus Greene [family COMPOSITAE]
Erigeron rudis Wooton & Standley [family COMPOSITAE]
Treatment Author(s)
Guy L. Nesom
Information
Perennials 30–80 cm; rhizomatous to subrhizomatous, fibrous-rooted, caudices usually relatively short and few branched, thick, woody. Stems erect, sometimes sparsely pilose (hairs 1–2 mm), densely stipitate-glandular. Leaves basal (usually withering by flowering) and cauline; basal blades oblanceolate-spatulate, 30–80 × 5–20(–25) mm (bases usually clasping to subclasping), margins entire, faces glabrous, densely stipitate-glandular; cauline blades narrowly lanceolate to oblong-, ovate-, or elliptic-lanceolate, nearly even-sized distally or sometimes mid largest (continuing to immediately proximal to heads). Heads 1–15(–22) in corymbiform arrays. Involucres 6–9 × 10–15(–18) mm. Phyllaries in 2–3(–4) series, densely stipitate-glandular. Ray florets 75–150; corollas blue to lavender, 9–17 mm (ca. 1 mm wide), laminae coiling. Disc corollas 3–4 mm. Cypselae 1.7–2 mm, 2-nerved, faces sparsely strigose; pappi: outer of (conspicuous) scales, inner of 14–22 bristles. 2n = 18.
Phenology
jul-aug (summer), sep-oct (fall)
Altitude range
(1300–)1800–3100 m;
Distribution
Mexico (Sonora).USA Ariz.USA Colo.USA N.Mex.
Discussion
Erigeron vreelandii is similar to E. speciosus in its perennial duration, tall stature, subclasping, spreading leaves nearly even-sized up the stems, corymbiform arrays, and blue rays; it is distinguished by the prominent vestiture of relatively long stipitate-glandular hairs. Intermediates apparently are formed between the two.

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