View source for Botrychium hesperium

{{Treatment/ID
|accepted_name=Botrychium hesperium
|accepted_authority=(Maxon & R. T. Clausen) W. H. Wagner & Lellinger
|publications={{Treatment/Publication
|title=Amer. Fern J.
|place=71: 92. 1981
|year=1981
}}
|common_names=Western moonwort
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Botrychium matricariifolium subsp. hesperium
|authority=Maxon & R.T. Clausen
|rank=subspecies
|publication_title=Mem. Torrey Bot. Club
|publication_place=19(2): 88, fig. 15. 1938
}}
|synonyms=
|hierarchy=Ophioglossaceae;Botrychium;Botrychium subg. Botrychium;Botrychium hesperium
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Ophioglossaceae]]</div><div class="higher-taxon"><small>genus</small>[[Botrychium]]</div><div class="higher-taxon"><small>subgenus</small>[[Botrychium subg. Botrychium]]</div><div class="higher-taxon"><small>species</small>[[Botrychium hesperium]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Trophophore </b>stalk 0–3(–10) mm, to 1/4 length of trophophore rachis; blade ± gray-green, dull, oblong-linear to deltate, 1–2-pinnate, to 6 × 5 cm, firm. <b>Pinnae</b> to 6 pairs, ascending, usually approximate or overlapping except in shade forms, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair commonly much larger and more divided than adjacent pair, lobed to tip, basal pair oblong to oblong-lanceolate with lobed margins, remainder broadly spatulate with entire margins or 1 or more shallow lobes, apex rounded, venation pinnate. <b>Sporophores</b> 1–3 pinnate, 2–3 times length of trophophore. <b>2n</b> =180.</span><!--

-->{{Treatment/Body
|phenology=Leaves appearing in midspring, dying in early fall.
|habitat=Grassy mountain slopes, snow fields, road ditches with willows, and sand dunes
|elevation=200–2800 m
|distribution=Alta.;B.C.;Ont.;Sask.;Ariz.;Colo.;Idaho;Mich.;Mont.;Utah;Wyo.
|discussion=<p>In the Rocky Mountains <i>Botrychium hesperium</i> grows often with <i>B. echo</i>, and in the Lake Superior region, with <i>B. acuminatum</i> and <i>B. matricariifolium</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Botrychium hesperium
|authority=(Maxon & R. T. Clausen) W. H. Wagner & Lellinger
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=Botrychium matricariifolium subsp. hesperium
|family=Ophioglossaceae
|phenology=Leaves appearing in midspring, dying in early fall.
|habitat=Grassy mountain slopes, snow fields, road ditches with willows, and sand dunes
|elevation=200–2800 m
|distribution=Alta.;B.C.;Ont.;Sask.;Ariz.;Colo.;Idaho;Mich.;Mont.;Utah;Wyo.
|reference=None
|publication title=Amer. Fern J.
|publication year=1981
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_687.xml
|genus=Botrychium
|subgenus=Botrychium subg. Botrychium
|species=Botrychium hesperium
}}<!--

-->[[Category:Treatment]][[Category:Botrychium subg. Botrychium]]