View source for Gymnocarpium disjunctum

{{Treatment/ID
|accepted_name=Gymnocarpium disjunctum
|accepted_authority=(Ruprecht) Ching
|publications={{Treatment/Publication
|title=Acta Phytotax. Sin.
|place=10: 304. 1965
|year=1965
}}
|common_names=Western oak fern
|basionyms={{Treatment/ID/Basionym
|name=Polypodium dryopteris var. disjunctum
|authority=Ruprecht
|rank=variety
|publication_title=Distr. Crypt. Vasc. Ross.,
|publication_place=52. 1845
}}
|synonyms={{Treatment/ID/Synonym
|name=Dryopteris disjuncta
|authority=(Ruprecht) C. V. Morton
|rank=species
}} {{Treatment/ID/Synonym
|name=Gymnocarpium dryopteris subsp. disjunctum
|authority=(Ruprecht) Sarvela
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Gymnocarpium dryopteris var. disjunctum
|authority=(Ruprecht) Ching
|rank=variety
}}
|hierarchy=Dryopteridaceae;Gymnocarpium;Gymnocarpium disjunctum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Dryopteridaceae]]</div><div class="higher-taxon"><small>genus</small>[[Gymnocarpium]]</div><div class="higher-taxon"><small>species</small>[[Gymnocarpium disjunctum]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>1–3 mm diam.; scales 2–4 mm. <b>Fertile</b> leaves usually 20–68 cm. <b>Petiole</b> 12–44 cm with sparse glandular hairs distally; scales 2–6 mm. <b>Blade</b> broadly deltate, 3-pinnate-pinnatifid, 8–24 cm, lax and delicate, abaxial surface and rachis glabrous or with sparse glandular hairs, adaxial surface glabrous. <b>Pinna</b> apex acuminate. <b>Proximal</b> pinnae 5–18 cm, ± perpendicular to rachis, with basiscopic pinnules ± perpendicular to costa; basal basiscopic pinnule sessile, pinnate-pinnatifid (with basal pinnulets, and sometimes 2 adjacent pinnulets, separate), basal basiscopic pinnulet usually longer (sometimes equaling or shorter) than adjacent pinnulet; 2d basal basiscopic pinnule sessile with basal basiscopic pinnulet usually longer than or equaling adjacent pinnulet; basal acroscopic pinnule sessile, with basal basiscopic pinnulet usually longer than or equaling adjacent pinnulet. <b>Pinnae</b> of 2d pair usually sessile with basal basiscopic pinnule longer than or equaling adjacent pinnule and markedly longer than basal acroscopic pinnule; basal acroscopic pinnule distinctly shorter than adjacent pinnule or rarely absent, apex often crenulate, obtuse. <b>Pinnae</b> of 3d pair usually sessile with basal basiscopic pinnule longer than or equaling adjacent pinnule and longer than basal acroscopic pinnule; basal acroscopic pinnule shorter than adjacent pinnule. <b>Ultimate</b> segments of proximal pinnae oblong, crenate to slightly lobed, apex crenulate, acute. <b>Spores</b> 27–31 µm. <b>2n</b> = 80.</span><!--

-->{{Treatment/Body
|habitat=Shaded, rocky slopes and ravines, mixed coniferous woods, moist stream and creek banks
|elevation=0–2400 m
|distribution=Alta.;B.C.;Alaska;Idaho;Mont.;Oreg.;Wash.;Wyo.;Asia in ne former Soviet republics.
|discussion=<p>In addition to the west coast of North America, <i>Gymnocarpium disjunctum</i> is found on Sakhalin Island in southern Kamchatka, in the former Soviet republics.</p><!--
--><p>Of conservation concern.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Gymnocarpium disjunctum
|authority=(Ruprecht) Ching
|rank=species
|parent rank=genus
|synonyms=Dryopteris disjuncta;Gymnocarpium dryopteris subsp. disjunctum;Gymnocarpium dryopteris var. disjunctum
|basionyms=Polypodium dryopteris var. disjunctum
|family=Dryopteridaceae
|habitat=Shaded, rocky slopes and ravines, mixed coniferous woods, moist stream and creek banks
|elevation=0–2400 m
|distribution=Alta.;B.C.;Alaska;Idaho;Mont.;Oreg.;Wash.;Wyo.;Asia in ne former Soviet republics.
|reference=None
|publication title=Acta Phytotax. Sin.
|publication year=1965
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_701.xml
|genus=Gymnocarpium
|species=Gymnocarpium disjunctum
}}<!--

-->[[Category:Treatment]][[Category:Gymnocarpium]]