View source for Euphorbia melanadenia

{{Treatment/ID
|accepted_name=Euphorbia melanadenia
|accepted_authority=Torrey in War Department [U.S.]
|publications={{Treatment/Publication
|title=Pacif. Railr. Rep.
|place=4(5): 135. 1857
|year=1857
}}
|common_names=Squaw sandmat;red-gland spurge
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Chamaesyce melanadenia
|authority=(Torrey) Millspaugh
|rank=species
}}
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia melanadenia
|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 melanadenia]]</div></div>
|volume=Volume 12
|mention_page=page 254, 277
|treatment_page=page 276
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, with moderately to strongly thickened rootstock. <b>Stems</b> ascending to erect, 5–20 cm, sericeous to appressed-villous. <b>Leaves</b> opposite; stipules distinct (lower side) and connate (upper side), linear, 0.5–1 mm, densely pilose; petiole 0.8–1.5 mm, tomentose; blade ovate, 1.2–5 × 0.8–2.9 mm, base asymmetric, hemicordate, margins entire, apex rounded to acute, surfaces tomentose; venation inconspicuous. <b>Cyathia</b> solitary at distal nodes; peduncle (0.6–)1.4–1.9 mm. <b>Involucre</b> campanulate, 0.6–1.1 × 0.7–1 mm, tomentose; glands 4, deep red to purple, elliptic, 0.3–0.4 × 0.4–0.7 mm; appendages white or becoming pink with age, oblong to flabellate, 0.4–0.7(–1) × 0.7–1.2 mm, distal margin entire or erose. <b>Staminate</b> flowers 45–80. <b>Pistillate</b> flowers: ovary tomentose, styles 0.5–0.8 mm, 2-fid nearly entire length. <b>Capsules</b> ovoid, 1.4–1.8 × 1.4–1.7 mm, tomentose; columella 1.2–1.5 mm. <b>Seeds</b> gray to tan, oblong, 4-angled in cross section, 1–1.2 × 0.4–0.6 mm, smooth to wrinkled or alveolate.</span><!--

-->{{Treatment/Body
|phenology=Flowering and fruiting year-round.
|habitat=Rocky slopes, river washes, dry to wet soils.
|elevation=400–1400 m.
|distribution=Ariz.;Calif.;Mexico (Baja California;Sonora).
|discussion=<p><i>Euphorbia melanadenia</i> is similar in appearance to <i>E. cinerascens</i>, but <i>E. melanadenia</i> has conspicuous involucral gland appendages whereas <i>E. cinerascens</i> has inconspicuous appendages or lacks them entirely. <i>Euphorbia melanadenia</i> occurs in Arizona and southern California, whereas <i>E. cinerascens</i> is found only in southern and western Texas.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Euphorbia melanadenia
|authority=Torrey in War Department [U.S.]
|rank=species
|parent rank=section
|synonyms=Chamaesyce melanadenia
|basionyms=
|family=Euphorbiaceae
|phenology=Flowering and fruiting year-round.
|habitat=Rocky slopes, river washes, dry to wet soils.
|elevation=400–1400 m.
|distribution=Ariz.;Calif.;Mexico (Baja California;Sonora).
|reference=None
|publication title=Pacif. Railr. Rep.
|publication year=1857
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V12/V12_265.xml
|genus=Euphorbia
|section=Euphorbia sect. Anisophyllum
|species=Euphorbia melanadenia
}}<!--

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