View source for Cirsium neomexicanum

{{Treatment/ID
|accepted_name=Cirsium neomexicanum
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Smithsonian Contr. Knowl.
|place=5(6): 101. 1853
|year=1853
}}
|common_names=Desert or New Mexico thistle
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Cirsium arcuum
|authority=A. Nelson
|rank=species
}} {{Treatment/ID/Synonym
|name=Cirsium humboldtense
|authority=Rydberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Cirsium neomexicanum var. utahense
|authority=(Petrak) S. L. Welsh
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cirsium undulatum var. albescens
|authority=D. C. Eaton
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cirsium utahense
|authority=
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Cirsium;Cirsium neomexicanum
|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 neomexicanum]]</div></div>
|volume=Volume 19
|mention_page=page 105, 135, 141
|treatment_page=page 140
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Biennials,</b> 40–290 cm; taprooted. <b>Stems</b> usually 1, erect, thinly gray-tomentose, sometimes ± glabrate; branches few–many, usually from above middle, ascending. <b>Leaves</b>: blades oblong–elliptic to oblanceolate, 6–35 × 1.5–7 cm, shallowly to deeply pinnatifid, lobes usually rigidly spreading, undivided or with 1–2 pairs of coarse teeth or lobes, main spines 5–15 mm, faces gray-tomentose, sometimes glabrate; basal often present at flowering, winged-petiolate or sessile, bases tapered, spiny-winged; principal cauline sessile, much reduced distally, bases decurrent as spiny wings less than 5 cm; distal much reduced, ± bractlike, sometimes scarcely more than a cluster of long spines. <b>Heads</b> 1–6 (many on large individuals), borne singly or in corymbiform arrays. <b>Peduncles</b> (2.5–)5–30 cm, bracted. <b>Involucres</b> shallowly hemispheric or campanulate, 2–3 × 2.5–5 cm, arachnoid to ± loosely tomentose, sometimes glabrous. <b>Phyllaries</b> in 7–10 series, imbricate to subequal, linear to narrowly lanceolate, abaxial faces with narrow or no glutinous ridge; outer and mid bodies appressed, entire or minutely spinulose, apices deflexed to spreading or ascending, long, flat, spines spreading to reflexed, 4–15 mm; apices of inner erect, often flexuous, flat. <b>Corollas</b> white to pale lavender or pink, 18–27 mm, tubes 8–14 mm, throats 4–7 mm, lobes 5–9 mm; style tips 4–5 mm. <b>Cypselae</b> dark brown, 5–6 mm, apical collars not differentiated; pappi 15–20 mm. <b>2n</b> = 30 (as C. utahense), 32; 30 + 1 I.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer (Mar–Jul).
|habitat=Canyons, slopes, roadsides in deserts, dry grasslands, and arid woodlands dominated by pinyon pines, junipers, oaks, Joshua trees
|elevation=300–2100 m
|distribution=Ariz.;Calif.;Colo.;Nev.;N.Mex.;Tex.;Utah;Mexico (Sonora).
|discussion=<p>Desert thistle is widespread in the Mojave and Sonoran deserts and ranges into the southern Great Basin desert, western Chihuahuan desert, and into adjacent mountains of Utah, southwestern Colorado, Arizona, and New Mexico.</p><!--
--><p>The name <i>Cirsium</i> utahense has been widely applied in the past to plants that are here recognized as <i>C. inamoenum</i>. S. L. Welsh (1983) treated it as a variety of <i>C. neomexicanum</i>. I have examined the type of C. utahense and can find no basis for distinguishing it from <i>C. neomexicanum</i> at any rank. The desert thistle is closely related to <i>C. occidentale</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cirsium neomexicanum
|authority=A. Gray
|rank=species
|parent rank=genus
|synonyms=Cirsium arcuum;Cirsium humboldtense;Cirsium neomexicanum var. utahense;Cirsium undulatum var. albescens;Cirsium utahense
|basionyms=
|family=Asteraceae
|phenology=Flowering spring–summer (Mar–Jul).
|habitat=Canyons, slopes, roadsides in deserts, dry grasslands, and arid woodlands dominated by pinyon pines, junipers, oaks, Joshua trees
|elevation=300–2100 m
|distribution=Ariz.;Calif.;Colo.;Nev.;N.Mex.;Tex.;Utah;Mexico (Sonora).
|reference=None
|publication title=Smithsonian Contr. Knowl.
|publication year=1853
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_122.xml
|tribe=Asteraceae tribe Cardueae
|genus=Cirsium
|species=Cirsium neomexicanum
}}<!--

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