View source for Corylus cornuta subsp. californica

{{Treatment/ID
|accepted_name=Corylus cornuta subsp. californica
|accepted_authority=(A. de Candolle) E. Murray
|publications={{Treatment/Publication
|title=Kalmia
|place=12: 19. 1982
|year=1982
}}
|common_names=California hazel
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Corylus rostrata var. californica
|authority=A. de Candolle
|rank=variety
|publication_title=Prodr.
|publication_place=16(2): 133. 1864
}}
|synonyms={{Treatment/ID/Synonym
|name=Corylus californica
|authority=(A. de Candolle) Rose
|rank=species
}} {{Treatment/ID/Synonym
|name=Corylus cornuta var. californica
|authority=(A. de Candolle) Sharp
|rank=variety
}} {{Treatment/ID/Synonym
|name=Corylus cornuta var. glandulosa
|authority=B. Boivin
|rank=variety
}} {{Treatment/ID/Synonym
|name=Corylus rostrata var. tracyi
|authority=Jepson
|rank=variety
}}
|hierarchy=Betulaceae;Betulaceae subfam. Coryloideae;Corylus;Corylus cornuta;Corylus cornuta subsp. californica
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Betulaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Betulaceae subfam. Coryloideae]]</div><div class="higher-taxon"><small>genus</small>[[Corylus]]</div><div class="higher-taxon"><small>species</small>[[Corylus cornuta]]</div><div class="higher-taxon"><small>subspecies</small>[[Corylus cornuta subsp. californica]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>or trees, open-spreading, to 8(–15) m; trunks usually several. <b>Bark</b> dark brown to blackish. <b>Branches</b> ascending; twigs sparsely to moderately pubescent, bearing glandular hairs. <b>Winter</b> buds containing inflorescences broadly ovoid, 3–5 × 3–5 mm, apex acute. <b>Leaves</b>: petiole pubescent, often bearing well-developed glandular hairs. <b>Leaf</b> blade nearly orbiculate or broadly elliptic, 4–7 × 3.5–7 cm, leathery, base nearly cordate, margins coarsely doubly serrate, apex obtuse to acute, abaxially moderately pubescent, villous to tomentose on major veins and in vein axils. <b>Inflorescences</b>: staminate catkins usually in clusters of 2–3, 4–6 × 0.5–0.8 cm; peduncles mostly 5–10 mm. <b>Nuts</b> in clusters of 2–4; involucral tubular beak less than 2 times length of nuts, hispid. <b>2n</b> = 22.</span><!--

-->{{Treatment/Body
|phenology=Flowering very early spring.
|habitat=Damp rocky slopes and stream banks in coastal mountain ranges
|elevation=1000–2500 m
|distribution=B.C.;Calif.;Oreg.;Wash.
|discussion=<p>The California hazel (<i>Corylus cornuta </i>subsp.<i> californica</i>) is most often treated as a variey of the northern <i>C. cornuta</i>. The two may not be very closely related, however, differing conspicuously in habit, leaf shape, pubescence, the presence of glandular hairs, form and size of the involucre, habitat, phytogeography, and various other features (J. N. Rose 1895; J. S. Drumke 1965). A thorough taxonomic study of this group should be undertaken.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Corylus cornuta subsp. californica
|authority=(A. de Candolle) E. Murray
|rank=subspecies
|parent rank=species
|synonyms=Corylus californica;Corylus cornuta var. californica;Corylus cornuta var. glandulosa;Corylus rostrata var. tracyi
|basionyms=Corylus rostrata var. californica
|family=Betulaceae
|phenology=Flowering very early spring.
|habitat=Damp rocky slopes and stream banks in coastal mountain ranges
|elevation=1000–2500 m
|distribution=B.C.;Calif.;Oreg.;Wash.
|reference=None
|publication title=Kalmia
|publication year=1982
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_117.xml
|subfamily=Betulaceae subfam. Coryloideae
|genus=Corylus
|species=Corylus cornuta
|subspecies=Corylus cornuta subsp. californica
}}<!--

-->[[Category:Treatment]][[Category:Corylus cornuta]]