View source for Euphorbia yaquiana

{{Treatment/ID
|accepted_name=Euphorbia yaquiana
|accepted_authority=Tidestrom
|publications={{Treatment/Publication
|title=Proc. Biol. Soc. Wash.
|place=48: 41. 1935
|year=1935
}}
|common_names=Hairy Mojave spurge
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Synonym
|name=Euphorbia schizoloba var. mollis
|authority=Norton
}}
|synonyms={{Treatment/ID/Synonym
|name=E. incisa var. mollis
|authority=(Norton) L. C. Wheeler
}}
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia subg. Esula;Euphorbia yaquiana
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Euphorbiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Euphorbia]]</div><div class="higher-taxon"><small>subgenus</small>[[Euphorbia subg. Esula]]</div><div class="higher-taxon"><small>species</small>[[Euphorbia yaquiana]]</div></div>
|volume=Volume 12
|mention_page=page 296, 300
|treatment_page=page 313
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, with thick rootstock. <b>Stems</b> slender, erect or ascending, sometimes sinuous, densely branched near base, 10–50 cm, moderately to densely puberulent to lanulose. <b>Leaves</b>: petiole 0–1 mm; blade usually lanceolate or elliptic-lanceolate, sometimes slightly oblanceolate, 8–30 × 6–14 mm, base usually acute, occasionally short-attenuate, rarely obtuse, margins entire, apex usually acute, occasionally obtuse, acuminate, or cuspidate, surfaces sparsely to moderately puberulent to lanulose; venation pinnate, sometimes obscure, midvein prominent. <b>Cyathial</b> arrangement: terminal pleiochasial branches 3–5, each 1–2 times 2-branched; pleiochasial bracts broadly ovate to subcordate, usually similar in size to, occasionally wider than, distal leaves; dichasial bracts distinct, broadly ovate to almost reniform, base obtuse, margins entire, apex obtuse, acuminate to cuspidate; axillary cymose branches 0–5. <b>Cyathia</b>: peduncle 0.3–0.8 mm. <b>Involucre</b> campanulate to broadly turbinate, 2.2–3 × 2–2.5 mm, puberulent to lanulose; glands 4, semicircular, trapezoidal, or elliptic-truncate, 0.8–1.5 × 1–2.2 mm, margins strongly crenate or dentate; horns usually absent, if present then straight, 0.1–0.2 mm, generally equaling teeth on gland margin. <b>Staminate</b> flowers 12–20. <b>Pistillate</b> flowers: ovary usually puberulent, occasionally lanulose; styles 1–1.2 mm, 2-fid. <b>Capsules</b> oblong-ovoid, 3.5–4 × 3–4 mm, 3-lobed; cocci rounded, smooth, usually puberulent, occasionally lanulose; columella 2.5–3 mm. <b>Seeds</b> gray to whitish, oblong cylindric, 2–3 × 1.5–1.8 mm, irregularly shallowly pitted to almost smooth; caruncle conic, 0.6 × 0.6 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering and fruiting spring–summer.
|habitat=Ponderosa pine forests, oak-pine mixed forests, dry stream banks and beds, open scrub areas, roadsides.
|elevation=1000–2200 m.
|distribution=Ariz.
|discussion=<p>Euphorbia yaquiana is endemic to Pima and Graham counties in southern Arizona and is known only from the Santa Catalina and Pinaleño mountains. Records of E. yaquiana from southwestern Colorado (as E. incisa var. mollis) likely represent misidentifications of E. brachycera; therefore, those disjunct occurrences have been excluded here from the distribution of E. yaquiana. Euphorbia yaquiana has often been treated as a synonym of E. schizoloba var. mollis, but molecular phylogenetic data show that it is more closely related to E. brachycera and E. chamaesula (J. A. Peirson et al. 2014).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Euphorbia yaquiana
|author=
|authority=Tidestrom
|rank=species
|parent rank=subgenus
|synonyms=E. incisa var. mollis
|basionyms=Euphorbia schizoloba var. mollis
|family=Euphorbiaceae
|phenology=Flowering and fruiting spring–summer.
|habitat=Ponderosa pine forests, oak-pine mixed forests, dry stream banks and beds, open scrub areas, roadsides.
|elevation=1000–2200 m.
|distribution=Ariz.
|reference=None
|publication title=Proc. Biol. Soc. Wash.
|publication year=1935
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V12/V12_208.xml
|genus=Euphorbia
|subgenus=Euphorbia subg. Esula
|species=Euphorbia yaquiana
}}<!--

-->[[Category:Treatment]][[Category:Euphorbia subg. Esula]]