View source for Euphorbia oblongata

{{Treatment/ID
|accepted_name=Euphorbia oblongata
|accepted_authority=Grisebach
|publications={{Treatment/Publication
|title=Spic. Fl. Rumel.
|place=1: 136. 1843
|year=1843
}}
|common_names=Egg-leaf or oblong spurge
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}{{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Tithymalus oblongatus
|authority=(Grisebach) Soják
}}
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia subg. Esula;Euphorbia oblongata
|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 oblongata]]</div></div>
|volume=Volume 12
|mention_page=page 240, 295, 306
|treatment_page=page 305
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, with woody taproot. <b>Stems</b> erect, unbranched or densely branching, 80 cm, often densely villous (especially young stems and pleiochasial branches). <b>Leaves</b>: petiole absent; blade oblong to narrowly obovate or lanceolate, 15–70 × 6–25 mm, base rounded or truncate, margins finely serrulate, apex obtuse, mucronulate, surfaces glabrous; venation inconspicuously pinnate, midvein prominent. <b>Cyathial</b> arrangement: terminal pleiochasial branches 3–5, each 2–3 times 2–4-branched; pleiochasial bracts ovate, similar in size to distal leaves; dichasial bracts distinct, ovate to suborbiculate, base truncate or rounded, margins entire or finely denticulate, apex obtuse, sometimes mucronulate; axillary cymose branches 0–4. <b>Cyathia</b>: peduncle 1–5 mm. <b>Involucre</b> cupulate to slightly turbinate, 1.5–2.5 × 1.3–1.5 mm, glabrous; glands 2–3, elliptic, 0.6–0.8 × 0.8–1.2 mm; horns absent. <b>Staminate</b> flowers 15–40. <b>Pistillate</b> flowers: ovary glabrous; styles 1.5–2 mm, 2-fid. <b>Capsules</b> globose, 3–4.5 × 3–4.5 mm, slightly 3-lobed; cocci rounded, verrucose-tuberculate, glabrous; columella 2.5–3.3 mm. <b>Seeds</b> brown, ovoid, 2.4–2.6 × 1.3–2 mm, smooth, caruncle reniform, 0.2–0.3 × 0.8–0.9 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering and fruiting spring–fall.
|habitat=Waste areas, disturbed sites, roadsides, fields, pastures.
|elevation=30–900 m.
|distribution=Calif.;Oreg.;Wash.;s Europe.
|discussion=<p>Euphorbia oblongata is listed as a noxious weed by the states of California, Oregon, and Washington.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Euphorbia oblongata
|author=
|authority=Grisebach
|rank=species
|parent rank=subgenus
|synonyms=Tithymalus oblongatus
|basionyms=
|family=Euphorbiaceae
|phenology=Flowering and fruiting spring–fall.
|habitat=Waste areas, disturbed sites, roadsides, fields, pastures.
|elevation=30–900 m.
|distribution=Calif.;Oreg.;Wash.;s Europe.
|introduced=true
|reference=None
|publication title=Spic. Fl. Rumel.
|publication year=1843
|special status=Weedy;Introduced
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V12/V12_622.xml
|genus=Euphorbia
|subgenus=Euphorbia subg. Esula
|species=Euphorbia oblongata
}}<!--

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