View source for Cirsium texanum

{{Treatment/ID
|accepted_name=Cirsium texanum
|accepted_authority=Buckley
|publications={{Treatment/Publication
|title=Proc. Acad. Nat. Sci. Philadelphia
|place=13: 460. 1862
|year=1862
}}
|common_names=Texas or Texas purple or southern thistle
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Cirsium austrinum
|authority=(Small) E. D. Schulz
|rank=species
}} {{Treatment/ID/Synonym
|name=Cirsium helleri
|authority=(Small) Cory
|rank=species
}} {{Treatment/ID/Synonym
|name=Cirsium texanum var. stenolepis
|authority=Shinners
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium texanum
|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 texanum]]</div></div>
|volume=Volume 19
|mention_page=page 98
|treatment_page=page 119
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or biennials, 20–200 cm; taprooted. <b>Stems</b> usually single, erect, tomentose to ± glabrate; branches 0–many, usually restricted to distal part, ascending. <b>Leaves</b>: blades oblong to elliptic, 7–30 × 2–12 cm, unlobed and merely spinulose to irregularly dentate or shallowly to deeply pinnatifid, lobes ± triangular, separated by narrow to wide sinuses, sometimes coarsely dentate or lobed proximally, obtuse to acute, main spines slender to stout, 1–5 mm, abaxial faces arachnoid tomentose, adaxial glabrous or thinly arachnoid; basal often absent at flowering, petioles slender, ± winged; cauline progressively reduced, proximal petiolate, mid and distal broadly sessile, bases ± auriculate-clasping or decurrent 1–3 cm; distalmost linear to lanceolate, bractlike, irregularly dentate or shallowly lobed. <b>Heads</b> 1–many, in openly paniculiform arrays. <b>Peduncles</b> slender, 3–30 cm (not overtopped by crowded distal leaves). <b>Involucres</b> ovoid to hemispheric, 1.5–2 × 1.5–2 cm, thinly arachnoid, glabrate. <b>Phyllaries</b> in 8–10 series, imbricate, green, lanceolate (outer) to linear (inner), abaxial faces with prominent glutinous ridge; outer and middle appressed, bodies entire, acute, spines spreading, slender, 1–5 mm; apices of inner often flexuous, flat, scabrid-ciliolate, acuminate. <b>Corollas</b> white to pink-purple, 20–25 mm, tubes 7–10 mm, throats 6–8 mm (noticeably wider than tubes), lobes 4–7 mm; style tips 3–4 mm. <b>Cypselae</b> brown, 3–5 mm, apical collars not differentiated; pappi 15–16 mm. <b>2n</b> = 22, 23, 24.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer (Apr–Jul).
|habitat=Roadsides, pastures, fields, shrub-tree savannas
|elevation=0–1000 m
|distribution=Ark.;La.;Mo.;N.Mex.;Okla.;Tex.;Mexico (Coahuila;Durango;Nuevo León;San Luis Potosí;Tamaulipas).
|discussion=<p><i>Cirsium texanum</i> ranges from the Chihuahuan Desert regions of trans-Pecos Texas and adjacent southeastern New Mexico across the plains of Texas and southern Oklahoma to southwestern Arkansas and southwestern Louisiana and south into north-central Mexico. D. S. Correll and M. C. Johnston (1970) suggested hybridization between <i>Cirsium texanum</i> and <i>C. undulatum</i> to explain anomalous specimens in the Edwards Plateau and trans-Pecos regions of western Texas.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cirsium texanum
|authority=Buckley
|rank=species
|parent rank=genus
|synonyms=Cirsium austrinum;Cirsium helleri;Cirsium texanum var. stenolepis
|basionyms=
|family=Asteraceae
|phenology=Flowering spring–summer (Apr–Jul).
|habitat=Roadsides, pastures, fields, shrub-tree savannas
|elevation=0–1000 m
|distribution=Ark.;La.;Mo.;N.Mex.;Okla.;Tex.;Mexico (Coahuila;Durango;Nuevo León;San Luis Potosí;Tamaulipas).
|reference=None
|publication title=Proc. Acad. Nat. Sci. Philadelphia
|publication year=1862
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V19_73.xml
|tribe=Asteraceae tribe Cardueae
|genus=Cirsium
|species=Cirsium texanum
}}<!--

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