View source for Chamaechaenactis

{{Treatment/ID
|accepted_name=Chamaechaenactis
|accepted_authority=Rydberg
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=33: 155. 1906
|year=1906
}}
|common_names=Fullstem
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Chaenactidinae;Chamaechaenactis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Chaenactidinae]]</div><div class="higher-taxon"><small>genus</small>[[Chamaechaenactis]]</div></div>
|etymology=Greek, chamae -, creeping, low, on the ground, and generic name Chaenactis
|volume=Volume 21
|mention_page=page 364, 366
|treatment_page=page 395
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 2–7(–9) cm (to 10–20+ cm across). <b>Stems</b> mostly subterranean (caudices relatively thick, branched; aerial stems essentially peduncles). <b>Leaves</b> mostly basal; alternate; petiolate; blades (1- or 3-nerved) cordate, elliptic, ovate, or rounded, margins entire or distally ± crenate, revolute to ± plane, faces ± strigose and gland-dotted, adaxial sometimes glabrescent. <b>Heads</b> discoid, borne singly. <b>Involucres</b> ± obconic, 6–15 (10–23 pressed) mm diam. <b>Phyllaries</b> 11–15 in 2 series (± erect, sometimes spreading in senescence, oblong to oblanceolate, ± unequal, herbaceous, abaxially densely villous, obscurely glandular). <b>Receptacles</b> convex, knobby, epaleate. <b>Ray</b> florets 0. <b>Disc</b> florets 10–30+, bisexual, fertile; corollas white to pinkish, tubes shorter than ± cylindric throats, lobes 5, ± deltate (style branches stigmatic in 2 lines, appendages linear-oblong, blunt). <b>Cypselae</b> clavate, ± quadrangular with 8–12 obscure nerves, densely piloso-strigose, eglandular; pappi persistent, of 7–11, (distinct) oblanceolate to narrowly spatulate, erose scales in 2 series (midnerves prominent). <b>x</b> = 16.</span><!--

-->{{Treatment/Body
|distribution=w North America.
|discussion=<p>Species 1.</p><!--
--><p><i>Chamaechaenactis</i> has been considered a close relative of <i>Chaenactis</i>, which has superficially similar heads. Nuclear rDNA evidence (B. G. Baldwin et al. 2002) suggests closer relationship to <i>Bartlettia</i>, <i>Hymenopappus</i>, and other members of Bahiinae sensu Baldwin. Such a placement was also suggested by Rydberg when he segregated <i>Chamaechaenactis</i> from <i>Chaenactis</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Chamaechaenactis
|author=James D. Morefield
|authority=Rydberg
|rank=genus
|parent rank=subtribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Linny Heagy
|illustration copyright=Flora of North America Association
|distribution=w North America.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1906
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V21_993.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae
|genus=Chamaechaenactis
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Chaenactidinae]]