View source for Euphorbia astyla

{{Treatment/ID
|accepted_name=Euphorbia astyla
|accepted_authority=Engelmann ex Boissier in A. P. de Candolle and A. L. P. P. de Candolle
|publications={{Treatment/Publication
|title=Prodr.
|place=15(2): 40. 1862
|year=1862
}}
|common_names=Alkali or Pecos spurge
|special_status={{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Chamaesyce astyla
|authority=(Engelmann ex Boissier) Millspaugh
|rank=species
}}
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia astyla
|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 astyla]]</div></div>
|volume=Volume 12
|mention_page=page 255, 274
|treatment_page=page 261
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, with woody or fibrous-fleshy taproot, 5–12 mm thick. <b>Stems</b> decumbent, ascending, or erect, few to many emerging from woody crown, 5–25(–50) cm, glabrous. <b>Leaves</b> opposite; stipules connate into deltate scale, 0.2–0.5 mm, minutely lacerate at apex, glabrous; petiole 0–0.2(–0.3) mm, glabrous; blade orbiculate-reniform to acute-cordate, 2–5(–8) × 2–5(–6) mm, base ± asymmetric, cordate to auriculate, sometimes clasping stem, margins entire, apex narrowly acute, surfaces glabrous; 2- or 3-veined from base, but usually only midvein conspicuous. <b>Cyathia</b> solitary at distal nodes; peduncle 0.3–1(–1.5) mm. <b>Involucre</b> broadly campanulate, 0.8–1.4 × 0.9–1.4 mm, glabrous; glands 4, yellow-green to brownish, oblong, 0.2–0.3 × 0.5–0.7 mm; appendages white, flabellate to oblong, 0.1–0.2(–0.5) × 0.4–0.8 mm, distal margin entire or dentate-crenate. <b>Staminate</b> flowers 22–26. <b>Pistillate</b> flowers: ovary glabrous; styles 0.3–0.4 mm, unbranched, thickened-clavate. <b>Capsules</b> ovoid and broadly triangular, 1.5–1.9(–2.5) × 1.4–1.6(–2.2) mm, glabrous; columella 1.2–1.8 mm. <b>Seeds</b> white, oblong, 4-angled in cross section, adaxial faces slightly concave, with long raphe between, 1.5–1.8 × 0.7–1 mm, markedly foveolate, with irregular to ± parallel or anastomosing ridges. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|phenology=Flowering and fruiting late spring–early fall.
|habitat=Desert, grasslands, limestone substrates, usually on very saline or alkaline soils.
|elevation=700–1100 m.
|distribution=Tex.;Mexico (Coahuila;Nuevo León).
|discussion=<p><i>Euphorbia astyla</i> is a specialist on halophytic, alkaline soils and is known in the flora area only in part of Pecos County. The species is closely related to <i>E. jejuna</i> but differs in its sessile or sub-sessile leaves with a cordate-auriculate base and involucral gland appendages that are not deeply lobed or cleft.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Euphorbia astyla
|authority=Engelmann ex Boissier in A. P. de Candolle and A. L. P. P. de Candolle
|rank=species
|parent rank=section
|synonyms=Chamaesyce astyla
|basionyms=
|family=Euphorbiaceae
|phenology=Flowering and fruiting late spring–early fall.
|habitat=Desert, grasslands, limestone substrates, usually on very saline or alkaline soils.
|elevation=700–1100 m.
|distribution=Tex.;Mexico (Coahuila;Nuevo León).
|reference=None
|publication title=Prodr.
|publication year=1862
|special status=Conservation concern
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V12/V12_867.xml
|genus=Euphorbia
|section=Euphorbia sect. Anisophyllum
|species=Euphorbia astyla
}}<!--

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