View source for Erigeron arisolius

{{Treatment/ID
|accepted_name=Erigeron arisolius
|accepted_authority=G. L. Nesom
|publications={{Treatment/Publication
|title=Phytologia
|place=69: 243. 1990
|year=1990
}}
|common_names=Dry-sun fleabane
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron arisolius
|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 arisolius]]</div></div>
|volume=Volume 20
|mention_page=page 264
|treatment_page=page 337
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or short-lived perennials, 30–70 cm; taprooted. <b>Stems</b> erect, coarsely hirsute to hispid (hairs only along ribs, bases thickened), minutely glandular. <b>Leaves</b> mostly cauline; blades linear to linear-oblong, -lanceolate, or -oblanceolate (slightly narrowed distally), 25–50 × 2–5 mm, margins entire or sometimes lobed (lobes 1–2 pairs, coarse, rounded), faces hispido-strigose. <b>Heads</b> 20–50+ in loose, corymbiform arrays (buds erect). <b>Involucres</b> 2.5–3.5 × 5–8 mm. <b>Phyllaries</b> in 3–4 series, minutely hispid, minutely glandular. <b>Ray</b> florets 125–180; corollas usually white, sometimes lavender or pinkish, 6–7 mm, laminae reflexing. <b>Disc</b> corollas 2–2.5 mm (throats indurate and inflated). <b>Cypselae</b> 0.7–1 mm, 2-nerved (nerves orange), faces sparsely strigose to glabrate; pappi: outer of setae or lanceolate scales, inner of (10–)12–17 bristles. <b>2n</b> = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Jun(–Nov).
|habitat=Grasslands, often in moist areas, sometimes with mesquite, openings, roadsides, oak, juniper, mesquite
|elevation=(800–)1300–1700 m
|distribution=Ariz.;Mexico (Sonora).
|discussion=<p>Of conservation concern.</p><!--
--><p><i>Erigeron arisolius</i> is similar in general appearance to <i>E. divergens</i>; the erect buds and reflexing rays of <i>E. arisolius</i> contrast with the nodding buds and non-reflexing rays of <i>E. divergens</i>. Additionally, the latter has evenly distributed stem pubescence, cypselae with whitish nerves (versus orange), and fewer pappus bristles. <i>Erigeron sceptrifer</i> also may be difficult to distinguish from these: it is more similar to <i>E. arisolius</i> in vestiture and has shorter rays that usually become purple upon drying and that are downward-curved, compared to those of <i>E. arisolius</i>, where the rays dry a lighter color and reflex at the tube-lamina junction.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Erigeron arisolius
|authority=G. L. Nesom
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering May–Jun(–Nov).
|habitat=Grasslands, often in moist areas, sometimes with mesquite, openings, roadsides, oak, juniper, mesquite
|elevation=(800–)1300–1700 m
|distribution=Ariz.;Mexico (Sonora).
|reference=None
|publication title=Phytologia
|publication year=1990
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V20_771.xml
|tribe=Asteraceae tribe Astereae
|genus=Erigeron
|species=Erigeron arisolius
}}<!--

-->[[Category:Treatment]][[Category:Erigeron]]