View source for Euphorbia indivisa

{{Treatment/ID
|accepted_name=Euphorbia indivisa
|accepted_authority=(Engelmann) Tidestrom
|publications={{Treatment/Publication
|title=Proc. Biol. Soc. Wash.
|place=48: 40. 1935
|year=1935
}}
|common_names=Royal sandmat
|special_status={{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Euphorbia dioeca var. indivisa
|authority=Engelmann in W. H. Emory
|publication_title=Rep. U.S. Mex. Bound.
|publication_place=2(1): 187. 1859
}}
|synonyms={{Treatment/ID/Synonym
|name=Chamaesyce indivisa
|authority=(Engelmann) Millspaugh
}}
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia indivisa
|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>section</small>[[Euphorbia sect. Anisophyllum]]</div><div class="higher-taxon"><small>species</small>[[Euphorbia indivisa]]</div></div>
|volume=Volume 12
|mention_page=page 252
|treatment_page=page 273
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual or short-lived perennial, with slender taproot to thickened and woody rootstock. <b>Stems</b> prostrate, usually mat-forming, terete to slightly flattened, 40 cm, lower surface glabrous, upper surface strigillose, pilose or villous. <b>Leaves</b> opposite; stipules distinct, entire or divided into 3–4 subulate to filiform segments, 0.8–2 mm, usually pilose, rarely glabrous; petiole 0.5–1 mm, pilose to villous; blade oblong, ovate or narrowly obovate, 3–10(–12) × 2–6 mm, base strongly asymmetric, hemicordate, margins serrulate, apex obtuse to subacute, surfaces glabrous or slightly pilose; 3-veined from base, often only midvein conspicuous. <b>Cyathia</b> usually in small cymose clusters on congested, axillary branches; peduncle rudimentary or to 0.2 mm. <b>Involucre</b> narrowly turbinate, 1–1.2 × 0.4–0.7 mm, pilose; glands 4, yellow to pink, unequal, proximal pair oblong or linear, 0.1 × 0.3–0.4(–0.6) mm, distal pair oblong or subcircular, 0.1 × 0.1–0.2 mm; appendages pink to reddish, unequal, on proximal glands oblique, 0.4–0.8(–1) × 0.8–1.4(–2) mm, on distal glands symmetric, 0.2–0.5 × 0.2–0.5 mm, slightly undulate to slightly crenate. <b>Staminate</b> flowers 5–15. <b>Pistillate</b> flowers: ovary pilose to strigillose in parts, glabrous in other parts; styles 0.8–1.3 mm, usually unbranched, rarely 2-fid at apex, filiform. <b>Capsules</b> ovoid-triangular, 1.2–1.5 × 1–1.4 mm, pilose to strigillose in parts, glabrous in other parts; columella 1–1.3 mm. <b>Seeds</b> brown to light gray, ovoid, 4-angled in cross section, 0.8–1 × 0.4–0.5 mm, with 4 or 5 deep transverse sulci alternating with low transverse ridges.</span><!--

-->{{Treatment/Body
|phenology=Flowering and fruiting summer–fall.
|habitat=Grasslands, oak forests, oak-mesquite woodlands, oak-juniper communities, rarely entering desert scrub.
|elevation=1000–2000 m.
|distribution=Ariz.;N.Mex.;Tex.;Mexico.
|discussion=<p><i>Euphorbia indivisa</i> is characteristic of grasslands and oak woodlands from extreme western Texas to southeastern Arizona. The species is often treated as a synonym of E. dioeca Kunth, but the two species are readily separable on the basis of their seeds. The seeds of <i>E. indivisa</i> possess deep transverse sulci, whereas those of E. dioeca are merely rippled or with low transverse ridges. <i>Euphorbia</i> dioeca is a weedy species that occurs widely throughout tropical America but has yet to be encountered within the flora area.</p>
|tables=
|references=
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-->{{#Taxon:
name=Euphorbia indivisa
|author=
|authority=(Engelmann) Tidestrom
|rank=species
|parent rank=section
|synonyms=Chamaesyce indivisa
|basionyms=Euphorbia dioeca var. indivisa
|family=Euphorbiaceae
|phenology=Flowering and fruiting summer–fall.
|habitat=Grasslands, oak forests, oak-mesquite woodlands, oak-juniper communities, rarely entering desert scrub.
|elevation=1000–2000 m.
|distribution=Ariz.;N.Mex.;Tex.;Mexico.
|reference=None
|publication title=Proc. Biol. Soc. Wash.
|publication year=1935
|special status=Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V12/V12_554.xml
|genus=Euphorbia
|section=Euphorbia sect. Anisophyllum
|species=Euphorbia indivisa
}}<!--

-->[[Category:Treatment]][[Category:Euphorbia sect. Anisophyllum]]