View source for Cirsium ciliolatum

{{Treatment/ID
|accepted_name=Cirsium ciliolatum
|accepted_authority=(L. F. Henderson) J. T. Howell
|publications={{Treatment/Publication
|title=Leafl. W. Bot.
|place=9: 9. 1959
|year=1959
}}
|common_names=Ashland thistle
|basionyms={{Treatment/ID/Synonym
|name=Cirsium undulatum var. ciliolatum
|authority=L. F. Henderson
}}
|synonyms={{Treatment/ID/Synonym
|name=Cirsium howellii
|authority=Petrak
}}
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium ciliolatum
|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 ciliolatum]]</div></div>
|volume=Volume 19
|mention_page=page 105, 108
|treatment_page=page 121
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials </b>60–200 cm, arachnoid, tomentose; runner roots producing adventitious buds. <b>Stems</b> 1–several, erect, thinly arachnoid to densely white-tomentose; branches 0–few, ascending. <b>Leaves</b>: blades oblong-elliptic, 10–30 × 3–12 cm, margins finely spiny-toothed and otherwise undivided to coarsely dentate, shallowly lobed, or deeply laciniate-pinnatifid, lobes broadly triangular to linear-lanceolate, main spines 1–6 mm, abaxial white-tomentose, adaxial faces ± green, thinly to densely arachnoid-tomentose; basal often present at flowering, winged petiolate; principal cauline well distributed, proximally winged-petiolate, distally sessile, gradually reduced, bases auriculate-clasping or short-decurrent as spiny wings; distal cauline few, reduced to linear bracts. <b>Heads</b> borne singly and terminal on main stem and branches, or few in corymbiform arrays. <b>Peduncles</b> 0–15 cm. <b>Involucres</b> ovoid to hemispheric, 1.5–2.3 × 1.5–3 cm, thinly arachnoid, ± glabrate. <b>Phyllaries</b> in 5–7 series, strongly imbricate, greenish with subapical darker central zone, lanceolate (outer) to linear (inner), abaxial faces with prominent glutinous ridge; outer and middle bodies appressed, entire, apices entire or finely serrulate, spines ascending, slender, 1–3 mm; apices of inner spreading to erect, narrow, ± flattened, finely serrulate, ± scabrous. <b>Corollas</b> dull white to lavender, 15–25 mm, tubes 7–11 mm, throats 5–7 mm, lobes 5–7 mm; style tips 5–7 mm. <b>Cypselae</b> brown, 3.5–7 mm, apical collars tan, 0.1–0.2 mm; pappi white or tawny, 15–20 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer (May–Aug).
|habitat=Grassy areas, open woodlands
|elevation=500–1400 m
|distribution=Calif.;Oreg.
|discussion=<p>Of conservation concern.</p><!--
--><p>Cirsium ciliolatum is restricted to a few sites in and around the Klamath Range of Jackson County, Oregon, and Siskiyou County, California. It is listed by the state of California as endangered. It is closely related to C. undulatum and perhaps should be treated as a variety of that species. Pending a comprehensive study of the variation within C. undulatum, I have maintained C. ciliolatum as a distinct species.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cirsium ciliolatum
|author=
|authority=(L. F. Henderson) J. T. Howell
|rank=species
|parent rank=genus
|synonyms=Cirsium howellii
|basionyms=Cirsium undulatum var. ciliolatum
|family=Asteraceae
|phenology=Flowering spring–summer (May–Aug).
|habitat=Grassy areas, open woodlands
|elevation=500–1400 m
|distribution=Calif.;Oreg.
|reference=None
|publication title=Leafl. W. Bot.
|publication year=1959
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V19_76.xml
|tribe=Asteraceae tribe Cardueae
|genus=Cirsium
|species=Cirsium ciliolatum
}}<!--

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