Difference between revisions of "Erigeron pumilus"

Nuttall

Gen. N. Amer. Pl. 2: 147. 1818.

Common names: Shaggy fleabane
Endemic
Treatment appears in FNA Volume 20. Treatment on page 288. Mentioned on page 270, 289, 290.
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name=Erigeron pumilus
 
name=Erigeron pumilus
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|distribution=Alta.;B.C.;Sask.;Calif.;Colo.;Idaho;Kans.;Mont.;N.Dak.;Nebr.;Nev.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
 
|reference=None
 
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|publication title=Gen. N. Amer. Pl.
 
|publication title=Gen. N. Amer. Pl.
 
|publication year=1818
 
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|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V20_601.xml
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Latest revision as of 18:27, 6 November 2020

Perennials, 5–30(–50) cm; taprooted, caudices with relatively short and thick branches. Stems erect, hirsute to hispido-hirsute (often with slightly deflexed hairs), minutely to stipitate glandular. Leaves basal (persistent) and cauline (petioles prominently ciliate, hairs thick-based, spreading); basal blades oblanceolate to narrowly oblanceolate, 20–80 × 1–4(–5) mm, margins entire, faces hispid to hispido-hirsute, little, if at all, glandular; cauline on distal 1/2–3/4 of stems, blades becoming linear-lanceolate, little reduced distally. Heads 1–5(–50). Involucres 4–7 × 7–15 mm. Phyllaries in 2–4 series (midvein region orange to yellowish), hirsute to hispido-hirsute, minutely glandular. Ray florets 50–100; corollas white to pink, less commonly bluish, 6–15 mm, laminae reflexing. Disc corollas 3–5 mm (throats distinctly indurate and inflated, glabrous or sparsely puberulent with glandular-viscid, hairs blunt). Cypselae 1.4–1.8 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae or subulate scales (0.1–0.3 mm), inner of 12–27 bristles.

Distribution

V20-601-distribution-map.gif

Alta., B.C., Sask., Calif., Colo., Idaho, Kans., Mont., N.Dak., Nebr., Nev., Oreg., S.Dak., Utah, Wash., Wyo.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Pappi: outer of coarse bristles or setiform scales, inner of 12–20 bristles; rays usually pink, sometimes white; indurate portion of disc corollas relatively dull, glabrous or slightly puberulent Erigeron pumilus var. intermedius
1 Pappi: outer of inconspicuous, well-developed setae, inner of 15–27 bristles; rays white; indurate portion of disc corollas shiny, glabrous Erigeron pumilus var. pumilus