View source for Euphorbia albomarginata

{{Treatment/ID
|accepted_name=Euphorbia albomarginata
|accepted_authority=Torrey & A. Gray in War Department [U.S.]
|publications={{Treatment/Publication
|title=Pacif. Railr. Rep.
|place=2(4): 174. 1857
|year=1857
}}
|common_names=Rattlesnake weed;white-margin sandmat or sandwort
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Chamaesyce albomarginata
|authority=(Torrey & A. Gray) Small
}}
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia albomarginata
|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 albomarginata]]</div></div>
|volume=Volume 12
|mention_page=page 256, 260, 271, 287
|treatment_page=page 259
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, with moderately to strongly thickened rootstock. <b>Stems</b> prostrate, occasionally mat-forming, frequently rooting at nodes, 10–80 cm, glabrous. <b>Leaves</b> opposite; stipules connate into conspicuous, deltate or ovate scale, white, 0.4–1(–2) mm, glabrous; petiole less than 1 mm, glabrous; blade ovate, oblong or orbiculate, 3–8(–15) × 3–7 mm, base strongly asymmetric, obtuse to hemicordate, margins whitish, entire, apex obtuse, rarely mucronulate, surfaces often with red blotch in center, glabrous; 3-veined from base but usually only midvein conspicuous. <b>Cyathia</b> solitary at distal nodes; peduncle 1–4 mm. <b>Involucre</b> campanulate, 0.8–1.1 × 0.9–2 mm, glabrous; glands 4, greenish yellow to red, usually oblong to reniform, rarely subcircular, 0.2–0.5 × (0.2–)0.3–0.8 mm; appendages white to pink, flabellate to oblong, 0.3–1 × 0.6–1.3 mm, distal margin entire or crenulate to erose. <b>Staminate</b> flowers 15–30. <b>Pistillate</b> flowers: ovary glabrous; styles 0.3–0.7 mm, 2-fid nearly entire length. <b>Capsules</b> broadly ovoid, 1.1–2.3 × 1.2–2 mm, glabrous; columella 1.1–1.6 mm. <b>Seeds</b> white to gray or brownish red, oblong-ovoid, 4-angled in cross section, 1–1.7 × 0.5–0.8 mm, smooth.</span><!--

-->{{Treatment/Body
|phenology=Flowering and fruiting year-round.
|habitat=Disturbed areas in desert scrub, grasslands, mesquite woodlands, chaparral.
|elevation=0–2300 m.
|distribution=Ariz.;Calif.;Colo.;Nev.;N.Mex.;Okla.;Tex.;Utah;Mexico;introduced in Pacific Islands (Hawaii).
|discussion=<p><i>Euphorbia albomarginata</i> is native to northern and central Mexico and the southwestern and south-central United States. The species occurs in a variety of habitats in western North America and in some areas is quite weedy. It has been recorded as a waif in Louisiana.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Euphorbia albomarginata
|author=
|authority=Torrey & A. Gray in War Department [U.S.]
|rank=species
|parent rank=section
|synonyms=Chamaesyce albomarginata
|basionyms=
|family=Euphorbiaceae
|phenology=Flowering and fruiting year-round.
|habitat=Disturbed areas in desert scrub, grasslands, mesquite woodlands, chaparral.
|elevation=0–2300 m.
|distribution=Ariz.;Calif.;Colo.;Nev.;N.Mex.;Okla.;Tex.;Utah;Mexico;introduced in Pacific Islands (Hawaii).
|reference=None
|publication title=Pacif. Railr. Rep.
|publication year=1857
|special status=Weedy
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V12/V12_858.xml
|genus=Euphorbia
|section=Euphorbia sect. Anisophyllum
|species=Euphorbia albomarginata
}}<!--

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