Compilation
Erigeron acris

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Name

Identification
Erigeron elongatus Ledeb. [family COMPOSITAE ] Verified by Sida, O., Erigeron acris [family COMPOSITAE ] (stored under name); Verified by Not on sheet.,
Related name
  • Erigeron decoloratus
  • Erigeron elatus
  • Erigeron bonariensis
  • Erigeron not on sheet
  • Erigeron elongatus
  • Trimorpha hispanica
  • Erigeron acris
  • Erigeron yellowstonensis
Common name
  • vergerette à feuilles fines, Flora of North America Vol. 20
  • Short-ray fleabane, Flora of North America Vol. 20
  • Fleabane, Flora of North America Vol. 20

Flora

Entry for Erigeron lonchophyllus Hooker [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 lonchophyllus Hooker [family COMPOSITAE], Fl. Bor.-Amer., 2: 18. 1834
Erigeron acris Linnaeus subsp. racemosus (Nuttall) Clements & E. G. Clements [family COMPOSITAE]
Erigeron lonchophyllus var. laurentianus Victorin [family COMPOSITAE]
Erigeron minor (Hooker) Rydberg [family COMPOSITAE]
Erigeron racemosus Nuttall [family COMPOSITAE]
Trimorpha lonchophylla (Hooker) G. L. Nesom [family ]
Treatment Author(s)
Guy L. Nesom
Information
Biennials or short-lived perennials (sometimes appearing annual), 2–45(–60) cm; fibrous-rooted, caudices simple. Stems erect or basally ascending, sparsely to densely hirsute, eglandular. Leaves basal (persistent) and cauline; basal blades oblanceolate to spatulate, 13–80(–150) × 1.5–5(–12) mm, margins entire, usually spreading ciliate, faces sparsely to moderately hirsute to glabrate, eglandular; cauline mostly linear (sometimes longer than basal, usually erect or nearly so). Heads 1 or 3–12 usually in loosely racemiform arrays (from erect peduncles distal to midstems, sometimes on proximal 1/3). Involucres 4–9 × 7–17 mm. Phyllaries in 2–3 series (inner apices acute to acuminate), hirsute to strigoso-hirsute, eglandular. Ray (pistillate) florets 70–130 (in 1 series); corollas white to light pink, 2–3 mm, laminae (filiform) erect, not coiling or reflexing (not surpassing involucres). Disc corollas 3–5 mm. Cypselae 1.3–1.8 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 20–30 (non accrescent) bristles. 2n = 18.
Phenology
jun-aug (summer), sep (fall)
Altitude range
(900–)1400–3600 m;
Distribution
USA AlaskaUSA Ariz.USA Calif.USA Colo.USA IdahoUSA Minn.USA Mont.USA Nebr.USA Nev.USA N.Mex.USA N.Dak.USA Oreg.USA S.Dak.USA UtahUSA Wash.USA Wyo.Canada Alta.Canada B.C.Canada Man.Canada N.W.T.Canada Ont.Canada Que.Canada Sask.Canada Yukon

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