View source for Erigeron nivalis

{{Treatment/ID
|accepted_name=Erigeron nivalis
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=Trans. Amer. Philos. Soc., n. s.
|place=7: 311. 1841
|year=1841
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Erigeron acris subsp. debilis
|authority=(A. Gray) Piper
}}{{Treatment/ID/Synonym
|name=Erigeron acris var. debilis
|authority=A. Gray
}}{{Treatment/ID/Synonym
|name=Erigeron angulosus subsp. debilis
|authority=(A. Gray) Piper
}}{{Treatment/ID/Synonym
|name=Erigeron debilis
|authority=(Hooker) Greene
}}{{Treatment/ID/Synonym
|name=Erigeron elatus var. bakeri
|authority=Greene
}}{{Treatment/ID/Synonym
|name=Erigeron jucundus
|authority=B. Boivin
}}{{Treatment/ID/Synonym
|name=Erigeron scotteri
|authority=(Linnaeus) Gray
}}{{Treatment/ID/Synonym
|name=Trimorpha acris var. debilis
|authority=(A. Gray) G. L. Nesom
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron nivalis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Astereae]]</div><div class="higher-taxon"><small>genus</small>[[Erigeron]]</div><div class="higher-taxon"><small>species</small>[[Erigeron nivalis]]</div></div>
|volume=Volume 20
|mention_page=page 265
|treatment_page=page 322
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Biennials </b>or short-lived perennials, 5–25(–35) cm; usually fibrous-rooted, sometimes taprooted, caudices simple or branched, sometimes weakly short-rhizomatous. <b>Stems</b> erect to basally ascending, sometimes sparsely hirsuto-villous, minutely glandular. <b>Leaves</b> basal (persistent) and cauline (petiole margins coarsely ciliate); basal blades oblanceolate to spatulate, 20–60 × 2–6(–10) mm, cauline gradually reduced distally, margins entire or rarely with 1–2 pairs of shallow teeth, faces sparsely hirsuto-strigose, eglandular. <b>Heads</b> 1–6(–8) in corymbiform arrays (on curved-ascending peduncles). <b>Involucres</b> 5–6 × 8–11 mm. <b>Phyllaries</b> in 2–3(–4) series (inner apices attenuate to caudate), sparsely hirsuto-villous or glabrous, minutely glandular. <b>Ray</b> (pistillate) florets in 2 series; outer 40–70, corollas white to pinkish 5.5–7 mm, laminae (filiform) erect, not coiling or reflexing; inner many fewer than outer series, tubular, elaminate. <b>Disc</b> corollas 4.4–5.5 mm. <b>Cypselae</b> 2–2.3 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of (12–)14–21 (accrescent) bristles. <b>2n</b> = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Aug.
|habitat=Rocky sites, gravel bars and banks, roadsides, meadows, open woods, up to subalpine areas with spruce in Rocky Mountains
|elevation=1200–3700 m
|distribution=Alta.;B.C.;N.W.T.;Yukon;Alaska;Calif.;Colo.;Idaho;Mont.;N.Mex.;Oreg.;Utah;Wash.;Wyo.
|discussion=<p>Erigeron nivalis usually has been treated as an infra-specific taxon within E. acris; the two are broadly sympatric in the northwestern United States and Canada without obvious intergrades. Both occur over a wide range of elevations and in similar habitats. Erigeron nivalis probably occurs in Nevada; it has not been taxonomically distinguished there. Erigeron scotteri was regarded by E. H. Moss and J. G. Packer (1983) as a synonym of E. acris (presumably var. debilis = E. nivalis; the heads are relatively small and borne singly).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Erigeron nivalis
|author=
|authority=Nuttall
|rank=species
|parent rank=genus
|synonyms=Erigeron acris subsp. debilis;Erigeron acris var. debilis;Erigeron angulosus subsp. debilis;Erigeron debilis;Erigeron elatus var. bakeri;Erigeron jucundus;Erigeron scotteri;Trimorpha acris var. debilis
|basionyms=
|family=Asteraceae
|phenology=Flowering May–Aug.
|habitat=Rocky sites, gravel bars and banks, roadsides, meadows, open woods, up to subalpine areas with spruce in Rocky Mountains
|elevation=1200–3700 m
|distribution=Alta.;B.C.;N.W.T.;Yukon;Alaska;Calif.;Colo.;Idaho;Mont.;N.Mex.;Oreg.;Utah;Wash.;Wyo.
|reference=None
|publication title=Trans. Amer. Philos. Soc., n. s.
|publication year=1841
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V20_723.xml
|tribe=Asteraceae tribe Astereae
|genus=Erigeron
|species=Erigeron nivalis
}}<!--

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