View source for Cirsium grahamii

{{Treatment/ID
|accepted_name=Cirsium grahamii
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Smithsonian Contr. Knowl.
|place=5(6): 102. 1853
|year=1853
}}
|common_names=Graham’s thistle
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium grahamii
|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 grahamii]]</div></div>
|volume=Volume 19
|mention_page=page 103, 114, 125, 150, 156
|treatment_page=page 124
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Biennials,</b> 50–100 cm; taproots slender and fascicles of thick fibrous roots. <b>Stems</b> 1, erect, thinly arachnoid and/or puberulent to short-pilose, sometimes ± glabrate; branches 0–4, ascending. <b>Leaves</b>: blades oblanceolate to oblong-elliptic, 20–30 × 3–8 cm, spinulose and otherwise entire or coarsely dentate to deeply pinnatifid, lobes entire or coarsely few toothed or lobed, main spines slender, 3–6 mm, abaxial ± persistently gray-tomentose, sometimes pilose along veins, adaxial faces thinly arachnoid and ± glabrate; basal often present at flowering, sessile or narrowly winged-petiolate; principal cauline gradually winged-petiolate or sessile, reduced distally, bases sometimes clasping or short-decurrent; distal cauline ascending, becoming bractlike, narrow, lobed or not. <b>Heads</b> 1–5. <b>Peduncles</b> 10–30 cm. <b>Involucres</b> hemispheric, 2–3 × 2–4 cm, thinly arachnoid or glabrous. <b>Phyllaries</b> in ca. 8 series, imbricate, proximally brownish, distally dark purplish, lanceolate to linear, margins of outer hispidulous-ciliolate, spiny fringed, pinnately spiny or with scarious appendages, abaxial faces with prominent, glutinous ridge; outer and middle appressed or only apices spreading, bodies minutely spinulose-denticulate, spines erect to ascending, 1.5–2.5 mm; apices of inner phyllaries often flexuous, flat, scabridulous. <b>Corollas</b> deep purple, 22–30 mm, tubes 13–18 mm, throats 4–5 mm, lobes 5–8 mm; style tips 4–4.5 mm. <b>Cypselae</b> tan with dark speckles to dark purplish brown, 4–5.5 mm, apical collars not differently colored; pappi 13–18 mm. <b>2n</b> = 32 (Mexico).</span><!--

-->{{Treatment/Body
|phenology=Flowering Jul–Sep.
|habitat=Oak woodlands, coniferous forests, meadows, often in damp soil
|elevation=1400–2600 m
|distribution=Ariz.;N.Mex.;Mexico (Chihuahua;Durango;Sonora).
|discussion=<p><i>Cirsium grahamii</i> occurs in the mountains of southeastern Arizona and southwestern New Mexico. It forms hybrid swarms with <i>C. parryi</i> and <i>C. scariosum </i>var.<i> coloradense</i> in the White Mountains of Arizona.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cirsium grahamii
|authority=A. Gray
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering Jul–Sep.
|habitat=Oak woodlands, coniferous forests, meadows, often in damp soil
|elevation=1400–2600 m
|distribution=Ariz.;N.Mex.;Mexico (Chihuahua;Durango;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/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V19_85.xml
|tribe=Asteraceae tribe Cardueae
|genus=Cirsium
|species=Cirsium grahamii
}}<!--

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