View source for Cirsium wrightii

{{Treatment/ID
|accepted_name=Cirsium wrightii
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Smithsonian Contr. Knowl.
|place=5(6): 101. 1853
|year=1853
}}
|common_names=Wright’s marsh thistle
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium wrightii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cardueae]]</div><div class="higher-taxon"><small>genus</small>[[Cirsium]]</div><div class="higher-taxon"><small>species</small>[[Cirsium wrightii]]</div></div>
|volume=Volume 19
|mention_page=page 97, 102, 163
|treatment_page=page 131
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Biennials </b>or monocarpic perennials, 100–300 cm; taproots short with many slender, fibrous lateral roots. <b>Stems</b> usually 1, erect, glabrous to ± tomentose; branches many, usually restricted to distal part of stem, ascending. <b>Leaves</b>: blades oblong to elliptic, 10–60 × 5–20 cm, unlobed and merely spinulose to irregularly dentate or shallowly to deeply pinnatifid, lobes ± broadly triangular, separated by wide sinuses, obtuse to acute, sometimes coarsely toothed or lobed, main spines slender, 1–3 mm, faces thinly arachnoid, soon glabrescent; basal often present at flowering, petioles slender, ± winged; cauline progressively reduced, proximal petiolate, mid and distal sessile, long-decurrent; distalmost linear to narrowly elliptic, bractlike, spinulose to irregularly dentate or shallowly lobed. <b>Heads</b> many, in openly paniculiform arrays, borne singly at tips of peduncles. <b>Peduncles</b> slender, 1–15 cm. <b>Involucres</b> ovoid to hemispheric, 1–2 × 1–2 cm, thinly arachnoid, glabrate. <b>Phyllaries</b> in 8–9 series, strongly imbricate, green, lanceolate (outer) to linear (inner), abaxial faces with prominent glutinous ridge; outer and middle appressed, bodies entire, apices acute, spines spreading, slender, ca. 1 mm; apices of inner often flexuous, acuminate, flat, scabrid-ciliolate. <b>Corollas</b> white to pink-purple, 19–21 mm, tubes 9–10 mm, throats 4–4.5 mm, lobes 5–7 mm; style tips 2–3.5 mm. <b>Cypselae</b> brown, ca. 4.5 mm, apical collars stramineous, 0.2 mm; pappi 15–16 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall (Aug–Oct).
|habitat=Springs, seeps, marshes, stream banks, often in alkaline soil
|elevation=1100–2600 m
|distribution=Ariz.;N.Mex.;Tex.;Mexico (Chihuahua;Sonora).
|discussion=<p>Of conservation concern.</p><!--
--><p>Wright’s thistle occurs from the mountains of south-central New Mexico eastward to the cienegas of the adjacent southwestern Great Plains. Cirsium wrightii is listed by the state of New Mexico as a species of concern. The one known site in Cochise County, Arizona, is apparently historic.</p><!--
--><p>Hybrids are known between Cirsium wrightii and C. vinaceum in the Sacramento Mountains of New Mexico. I have observed hummingbird visits to the heads of both species, though C. wrightii shows none of the apparent adaptations to hummingbirds (P. L. Barlow-Irick 2002) that are seen in such taxa as C. occidentale var. candidissimum, C. andersonii, and C. arizonicum.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cirsium wrightii
|author=
|authority=A. Gray
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering summer–fall (Aug–Oct).
|habitat=Springs, seeps, marshes, stream banks, often in alkaline soil
|elevation=1100–2600 m
|distribution=Ariz.;N.Mex.;Tex.;Mexico (Chihuahua;Sonora).
|reference=None
|publication title=Smithsonian Contr. Knowl.
|publication year=1853
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V19_99.xml
|tribe=Asteraceae tribe Cardueae
|genus=Cirsium
|species=Cirsium wrightii
}}<!--

-->[[Category:Treatment]][[Category:Cirsium]]