View source for Euphorbia polycarpa

{{Treatment/ID
|accepted_name=Euphorbia polycarpa
|accepted_authority=Bentham
|publications={{Treatment/Publication
|title=Bot. Voy. Sulphur,
|place=50. 1844
|year=1844
}}
|common_names=Smallseed sandmat
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Chamaesyce polycarpa
|authority=(Bentham) Millspaugh
|rank=species
}}
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia polycarpa
|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 polycarpa]]</div></div>
|volume=Volume 12
|mention_page=page 254, 257, 258, 281
|treatment_page=page 283
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="arizona geographical terms;arizona geographical terms"><b>Euphorbia </b>polycarpa a highly variable species distributed throughout the Baja California peninsula, eastern Sonora, and the arid southwestern United States from southwestern Arizona to southern Nevada and central California.</span> <span class="statement" id="st-d0_s1" data-properties="">L. C.</span> <span class="statement" id="st-d0_s2" data-properties="whole-organism variability;whole-organism arrangement;whole-organism geographical terms;whole-organism geographical terms;whole-organism fusion;whole-organism atypical quantity;species shape;variety quantity"><b>Wheeler </b>(1941) divided the species into seven varieties, the majority of which occur in Baja California Sur.</span> <span class="statement" id="st-d0_s3" data-properties="whole-organism quantity;state fusion"><b>He </b>reported two of these for the United States: var. hirtella and var. polycarpa.</span> <span class="statement" id="st-d0_s4" data-properties="whole_organism pubescence;whole_organism growth form"><b>Variety </b>hirtella, as the name suggests, applied to hairy plants.</span> <span class="statement" id="st-d0_s5" data-properties="segregation quantity;segregation geographical terms;continuum pubescence;branch pubescence;branch pubescence"><b>However,</b> it here treated as a synonym of var. polycarpa, because variation in pubescence shows no geographic segregation and ranges along a continuum from glabrous or sparsely to densely hairy, and because glabrous and hairy branches can occur on the same individual.</span><!--

-->{{Treatment/Body
|distribution=Ariz.;Calif.;Nev.;nw Mexico
|discussion=<p>Varieties 5 (1 in the flora).</p><!--
--><p>Some of the varieties occurring in Mexico are highly divergent and appear to be sufficiently distinct to merit recognition as species. However, within the flora area, Euphorbia polycarpa is relatively uniform, and the only noteworthy variation involves the size of the involucral gland appendages. In the portion of the California Floristic Province occupied by E. polycarpa (Los Angeles, Orange, western Riverside, western San Diego, and Ventura counties) the appendages are conspicuously larger than those of plants throughout the remainder of its range in the southwestern United States (0.4–1.2 versus 0.1–0.3 mm). Large-appendaged plants are also common in Baja California and correspond well with the type collection. The taxonomic significance of this variation is not clear at this time, and the small-appendaged plants may merit segregation as an infraspecific taxon. However, no formal changes are proposed, awaiting a comprehensive review of the species throughout its range.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Euphorbia polycarpa
|authority=Bentham
|rank=species
|parent rank=section
|synonyms=Chamaesyce polycarpa
|basionyms=
|family=Euphorbiaceae
|distribution=Ariz.;Calif.;Nev.;nw Mexico
|reference=None
|publication title=Bot. Voy. Sulphur,
|publication year=1844
|special status=Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V12/V12_620.xml
|genus=Euphorbia
|section=Euphorbia sect. Anisophyllum
|species=Euphorbia polycarpa
|arizona geographical terms=from southwestern arizona;southern
|branch pubescence=hairy;glabrous
|continuum pubescence=glabrous or;sparsely densely hairy
|segregation geographical terms=range
|segregation quantity=no
|species shape=divided
|state fusion=united
|variety quantity=7
|whole-organism arrangement=distributed
|whole-organism atypical quantity=1941
|whole-organism fusion=united
|whole-organism geographical terms=southwestern;eastern
|whole-organism quantity=2
|whole-organism variability=variable
|whole_organism growth form=plant
|whole_organism pubescence=hairy
}}<!--

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