View source for Eriogonum contortum

{{Treatment/ID
|accepted_name=Eriogonum contortum
|accepted_authority=Small ex Rydberg
|publications={{Treatment/Publication
|title=Fl. Colorado,
|place=104, 107. 1906
|year=1906
}}
|common_names=Grand Valley wild buckwheat
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Eriogonum effusum subsp. contortum
|authority=(Small ex Rydberg) S. Stokes
}}
|hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Eucycla;Eriogonum contortum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Eriogonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Eriogonum]]</div><div class="higher-taxon"><small>subgenus</small>[[Eriogonum subg. Eucycla]]</div><div class="higher-taxon"><small>species</small>[[Eriogonum contortum]]</div></div>
|volume=Volume 5
|mention_page=page 235, 236, 241, 264
|treatment_page=page 270
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> spreading, not scapose, 0.5–0.8(–1) × 0.8–3.5 dm, thinly floccose or glabrous, greenish. <b>Stems</b> spreading, occasionally with persistent leaf bases, up to 1/3 height of plant; caudex stems matted; aerial flowering stems slightly spreading to erect, slender, solid, not fistulose, 0.2–0.6 dm, thinly floccose or glabrous, tomentose among leaves. <b>Leaves</b> sheathing up stem 1–4 cm, 1 per node; petiole 0.1–0.2 cm, glabrous or sparsely floccose; blade linear to narrowly lanceolate, (0.5–)1–2(–2.5) × 0.15–0.2(–0.25) cm, densely white-tomentose abaxially, floccose and greenish adaxially, margins revolute. <b>Inflorescences</b> cymose, 1–3 × 0.8–2 cm; branches dichotomous, thinly floccose or glabrous; bracts 3, scalelike, triangular, (0.5–)1–2 mm. <b>Peduncles</b> erect, slender, 0.2–1 cm, floccose or glabrous. <b>Involucres</b> 1 per node, turbinate to turbinate-campanulate, 1.5–2(–2.5) × 1–2 mm, glabrous; teeth 5, erect, 0.3–0.5 mm. <b>Flowers</b> 1.5–2.5 mm; perianth yellow, glabrous; tepals connate proximal 1/2, monomorphic to slightly dimorphic, those of outer whorl slightly broader than those of inner whorl, oblong to obovate; stamens exserted, 1.5–2 mm; filaments pilose proximally. <b>Achenes</b> brown, 2–2.5 mm, glabrous.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Aug.
|habitat=Heavy shale or clay flats and slopes, saltbush communities
|elevation=1300-1700 m
|distribution=Colo.;Utah.
|discussion=<p><i>Eriogonum contortum</i> is localized on Mancos Shale in Grand Valley of eastern Grand County, Utah, and western Mesa County, Colorado. Disjunct populations occur just outside Grand Valley in Garfield County, Colorado, and in Emery County, Utah. In Colorado, the Bureau of Land Management considers it a “sensitive” species. The Badger Wash Natural Area has been established to protect this species along with Astragalus musiniensis M. E. Jones (Ferron milkvetch) and Cryptantha elata Payson (tall cryptanth). Grand Valley wild buckwheat occasionally is seen in rock gardens. It is related to <i>E. brevicaule </i>var.<i> brevicaule</i> but shares many characters in common with <i>E. pelinophilum</i>, most notably a flower that in fruit has its proximal half decidedly rounded due to its close adherence to the globose base of the achene.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Eriogonum contortum
|author=
|authority=Small ex Rydberg
|rank=species
|parent rank=subgenus
|synonyms=Eriogonum effusum subsp. contortum
|basionyms=
|family=Polygonaceae
|phenology=Flowering May–Aug.
|habitat=Heavy shale or clay flats and slopes, saltbush communities
|elevation=1300-1700 m
|distribution=Colo.;Utah.
|reference=None
|publication title=Fl. Colorado,
|publication year=1906
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V5/V5_513.xml
|subfamily=Polygonaceae subfam. Eriogonoideae
|genus=Eriogonum
|subgenus=Eriogonum subg. Eucycla
|species=Eriogonum contortum
}}<!--

-->[[Category:Treatment]][[Category:Eriogonum subg. Eucycla]]