View source for Thalictrum occidentale

{{Treatment/ID
|accepted_name=Thalictrum occidentale
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=8: 372. 1873
|year=1873
}}
|common_names=Western meadow-rue
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Variety
|authority=B. Boivin
}}{{Treatment/ID/Synonym
|name=Variety
|authority=H. St. John
}}
|hierarchy=Ranunculaceae;Thalictrum;Thalictrum sect. Heterogamia;Thalictrum occidentale
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Ranunculaceae]]</div><div class="higher-taxon"><small>genus</small>[[Thalictrum]]</div><div class="higher-taxon"><small>section</small>[[Thalictrum sect. Heterogamia]]</div><div class="higher-taxon"><small>species</small>[[Thalictrum occidentale]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Roots </b>yellow to medium brown or black, thin, fibrous. <b>Stems</b> erect, 30-100(-120) dm, glabrous, often from well-developed rhizomes. <b>Leaves</b> mostly cauline. <b>Leaf</b> blade 3-4×-ternately compound; leaflets orbiculate to obovate-cuneate or cordate, apically 3-lobed, 10-30 mm wide, lobe margins coarsely crenate, surfaces glabrous to glandular. <b>Inflorescences</b> terminal (some flowers in axils of distal leaves), panicles, rather open, many flowered. <b>Flowers</b>: sepals whitish or greenish or purplish tinged, ovate, 3.5-4.4 mm in staminate flowers, 1.5-2 mm in pistillate flowers; filaments purplish, 4-10 mm; anthers 1.5-4 mm, long-apiculate; stigma often purplish. <b>Achenes</b> 6-9, spreading to reflexed, short-stipitate; stipe 0.4-1.2 mm; body fusiform, not laterally compressed, (4-)6-9(-10) mm, tapering at both ends, glandular, strongly 3-veined on each side, veins not anastomosing; beak 3-4.5(-6) mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering early summer-mid summer (Jun–Aug).
|habitat=Open woods, meadows, and copses
|elevation=200-3400 m
|distribution=Alta.;B.C.;Sask.;Yukon;Alaska;Calif.;Colo.;Idaho;Mont.;Nev.;N.Dak.;Oreg.;Utah;Wash.;Wyo.
|discussion=<p>Thalictrum occidentale is similar to T. confine and T. venulosum; thorough field studies are needed to determine whether or not they should be maintained as separate species. Thalictrum occidentale can usually be distinguished by its reflexed achenes.</p><!--
--><p>Plants of northern British Columbia, sometimes called Thalictrum occidentale var. breitungii (B. Boivin) Brayshaw, appear to be intermediate between T. occidentale and T. venulosum (T. C. Brayshaw, pers. comm.); achenes are ascending, ± compressed, and beaks rather short (2-4 mm) (T. C. Brayshaw 1989).</p><!--
--><p>Some of the Native Americans used Thalictrum occidentale medicinally for headaches, eye trouble, and sore legs, to loosen phlem, and to improve blood circulation (D. E. Moerman 1986).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Thalictrum occidentale
|author=
|authority=A. Gray
|rank=species
|parent rank=section
|synonyms=Variety;Variety
|basionyms=
|family=Ranunculaceae
|phenology=Flowering early summer-mid summer (Jun–Aug).
|habitat=Open woods, meadows, and copses
|elevation=200-3400 m
|distribution=Alta.;B.C.;Sask.;Yukon;Alaska;Calif.;Colo.;Idaho;Mont.;Nev.;N.Dak.;Oreg.;Utah;Wash.;Wyo.
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1873
|special status=Endemic;Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_982.xml
|genus=Thalictrum
|section=Thalictrum sect. Heterogamia
|species=Thalictrum occidentale
}}<!--

-->[[Category:Treatment]][[Category:Thalictrum sect. Heterogamia]]