View source for Heterotheca villosa var. nana

{{Treatment/ID
|accepted_name=Heterotheca villosa var. nana
|accepted_authority=(A. Gray) Semple
|publications={{Treatment/Publication
|title=Novon
|place=4: 54. 1994
|year=1994
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Chrysopsis canescens var. nana
|authority=A. Gray
|rank=variety
|publication_title=Mem. Amer. Acad. Sci., n. s.
|publication_place=4: 78. 1849
}}
|synonyms={{Treatment/ID/Synonym
|name=Chrysopsis horrida
|authority=Rydberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Heterotheca horrida
|authority=(Rydberg) V. L. Harms
|rank=species
}} {{Treatment/ID/Synonym
|name=Heterotheca villosa var. horrida
|authority=(Rydberg) Semple
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Heterotheca;Heterotheca villosa;Heterotheca villosa var. nana
|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>[[Heterotheca]]</div><div class="higher-taxon"><small>species</small>[[Heterotheca villosa]]</div><div class="higher-taxon"><small>variety</small>[[Heterotheca villosa var. nana]]</div></div>
|volume=Volume 20
|mention_page=page 250, 251, 254
|treatment_page=page 253
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>ascending to erect (1–60+), 9–40(–63) cm, moderately to densely hispido-strigose, abundantly long-hirsute, sparsely to densely stipitate-glandular. <b>Distal</b> cauline leaf blades (often perpendicluar to stems), linear to broadly oblong, (6–)10–24(–32) mm, ± reduced distally, bases rounded, margins flat, apices usually acute, often obtuse, faces moderately hispido-strigose (hairs 9–56/mm2), moderately to densely stipitate-glandular (glands 2–36/mm2). <b>Heads</b> 2–20(–33) in usually congested, corymbiform arrays. <b>Peduncles</b> (4–)10–35(–48) mm, moderately to densely hispido-strigose, moderately to densely glandular; bracts 1–4, linear-oblong, reduced distally, not leaflike. <b>Involucres</b> cylindric to campanulate (fresh), (5.4–)6.4–8.4(–9) mm. <b>Phyllaries</b> narrowly triangular-lanceolate, margins sometimes reddish purple distally, faces sparsely to moderately strigose, sparsely to densely glandular. <b>Ray</b> florets 11–19(–22); laminae (3.5–)6.9–11(–12) mm. <b>2n</b> = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering (May–)Jun–Aug(–Oct).
|habitat=Sandy and gravelly limestone, sandstone and granitic soils, fissures in lava surfaces, igneous cliffs, short-grass grasslands, dry sagebrush areas, open mixed conifer forests at lower elevations, pinyon-juniper-cholla brush
|elevation=1300–2700(–2900) m
|distribution=Ariz.;Colo.;Kans.;Nebr.;N.Mex.;Tex.;Utah;Wyo.
|discussion=<p>Variety nana is distinguished by its linear to broadly oblong, often perpendicular, distal stem leaves and often congested, corymbiform arrays. Forms of <i></i>var.<i> minor</i> with oblong to ovate leaves generally have stems with longer internodes and fewer leaves. Plants at higher elevations in the foothills approach narrow-leaved forms of <i>Heterotheca fulcrata</i> in general appearance, and may hybridize with them, especially in the Laramie Hills of Wyoming. Possible hybrids between <i></i>var.<i> nana</i> and <i></i>var.<i> foliosa</i> occur in Colorado and Wyoming, where the two are sympatric. In the Four Corners area, <i></i>var.<i> nana</i> grades into <i></i>var.<i> scabra</i>, and collections often are difficult to place into one of the two taxa; both have broader leaf bases than <i></i>var.<i> minor</i> as it occurs in the region. Rare plants in Wisconsin show similarities to both <i></i>var.<i> minor</i> and <i></i>var.<i> nana</i>. The variety was long known under the epithet horrida (either as a species or variety), but at the varietal rank the epithet nana is older.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Heterotheca villosa var. nana
|authority=(A. Gray) Semple
|rank=variety
|parent rank=species
|synonyms=Chrysopsis horrida;Heterotheca horrida;Heterotheca villosa var. horrida
|basionyms=Chrysopsis canescens var. nana
|family=Asteraceae
|phenology=Flowering (May–)Jun–Aug(–Oct).
|habitat=Sandy and gravelly limestone, sandstone and granitic soils, fissures in lava surfaces, igneous cliffs, short-grass grasslands, dry sagebrush areas, open mixed conifer forests at lower elevations, pinyon-juniper-cholla brush
|elevation=1300–2700(–2900) m
|distribution=Ariz.;Colo.;Kans.;Nebr.;N.Mex.;Tex.;Utah;Wyo.
|reference=None
|publication title=Novon
|publication year=1994
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V20_552.xml
|tribe=Asteraceae tribe Astereae
|genus=Heterotheca
|species=Heterotheca villosa
|variety=Heterotheca villosa var. nana
}}<!--

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