View source for Chorizanthe uniaristata

{{Treatment/ID
|accepted_name=Chorizanthe uniaristata
|accepted_authority=Torrey & A. Gray
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=8: 195. 1870
|year=1870
}}
|common_names=One-awn spineflower
|basionyms=
|synonyms=
|hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Chorizanthe;Chorizanthe subg. Amphietes;Chorizanthe sect. Ptelosepala;Chorizanthe uniaristata
|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>[[Chorizanthe]]</div><div class="higher-taxon"><small>subgenus</small>[[Chorizanthe subg. Amphietes]]</div><div class="higher-taxon"><small>section</small>[[Chorizanthe sect. Ptelosepala]]</div><div class="higher-taxon"><small>species</small>[[Chorizanthe uniaristata]]</div></div>
|volume=Volume 5
|mention_page=page 448, 461
|treatment_page=page 460
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>spreading or ascending, 0.2–0.6(–0.8) × 0.5–4(–5) dm, appressed-pubescent. <b>Leaves</b> basal; petiole 0.5–2 cm; blade oblanceolate, 0.5–1.5(–2) × 0.2–0.8 cm, thinly pubescent. <b>Inflorescences</b> with involucres in small open clusters 0.5–1.5 cm diam., greenish to grayish or reddish; bracts 2, sessile, usually leaflike, oblanceolate to elliptic, 0.5–1.5 cm × 1.5–5 mm, gradually reduced and becoming scalelike at distal nodes, linear, aciculate, acerose, 0.4–1.2 cm × 1–2(–3) mm, awns straight, 1.5–4 mm. <b>Involucres</b> 3–10, grayish to reddish, urceolate, slightly ventricose basally, 2–3 mm, without scarious or membranous margins, slightly corrugate, densely grayish-pubescent; teeth widely spreading to divergent, unequal, 0.3–0.5 or 3–6 mm; awns straight or uncinate, unequal, with longer anterior one straight, 2.5–5.5 mm, others spreading, uncinate, 0.3–0.5 mm. <b>Flowers</b> included or only slightly exserted; perianth bicolored with floral tube greenish white and tepals white, cylindric, 2–3 mm, sparsely pubescent; tepals connate 2/3 their length, dimorphic, linear-oblong, those of outer whorl spreading, narrowly oblong, 1.5 times longer than those of inner whorl, rounded but with minute cusp or 3 teeth apically, those of inner whorl erect to slightly spreading, acute, entire apically; stamens 3, included; filaments distinct, 1–2 mm, glabrous; anthers white, ovate, 0.4–0.5 mm. <b>Achenes</b> brown, globose-lenticular, 2–3 mm. <b>2n</b> = (78), 80, (82).</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–Jul.
|habitat=Sandy to gravelly talus or clay flats and slopes, mixed grassland and chaparral communities, pine-oak woodlands
|elevation=800-1900 m
|distribution=Calif.
|discussion=<p><i>Chorizanthe uniaristata</i> is scattered in the Inner Coast Ranges and across the Transverse and Tehachapi ranges to the southern Sierra <i>Nevada</i>.</p><!--
--><p>One-awn spineflower is a polyploid, but whether an autopolyploid or an autoallopolyploid has not been determined. It has the smallest meiotic chromosomes observed by C. B. Hardham (1989).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Chorizanthe uniaristata
|author=
|authority=Torrey & A. Gray
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Polygonaceae
|phenology=Flowering Apr–Jul.
|habitat=Sandy to gravelly talus or clay flats and slopes, mixed grassland and chaparral communities, pine-oak woodlands
|elevation=800-1900 m
|distribution=Calif.
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1870
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V5/V5_961.xml
|subfamily=Polygonaceae subfam. Eriogonoideae
|genus=Chorizanthe
|subgenus=Chorizanthe subg. Amphietes
|section=Chorizanthe sect. Ptelosepala
|species=Chorizanthe uniaristata
}}<!--

-->[[Category:Treatment]][[Category:Chorizanthe sect. Ptelosepala]]