View source for Cryptogramma sitchensis

{{Treatment/ID
|accepted_name=Cryptogramma sitchensis
|accepted_authority=(Ruprecht) T. Moore
|publications={{Treatment/Publication
|title=Index Fil.
|place=67. 1857
|year=1857
}}
|common_names=Alaska parsley fern
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Allosorus sitchensis
|authority=Ruprecht
|rank=species
|publication_title=Distr. Crypt. Vasc. Ross.
|publication_place=3: 47. 1845
}}
|synonyms={{Treatment/ID/Synonym
|name=Cryptogramma acrostichoides var. sitchensis
|authority=(Ruprecht) C. Christensen
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cryptogramma crispa var. sitchensis
|authority=(Ruprecht) C. Christensen
|rank=variety
}}
|hierarchy=Pteridaceae;Cryptogramma;Cryptogramma sitchensis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pteridaceae]]</div><div class="higher-taxon"><small>genus</small>[[Cryptogramma]]</div><div class="higher-taxon"><small>species</small>[[Cryptogramma sitchensis]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>decumbent to erect, much branched from base, stout, 10–20 mm diam. (including hardened, persistent leaf bases); scales bicolored, dense, broadly lanceolate to linear, to 7 × 2 mm. <b>Leaves</b> densely tufted, green over winter, persistent; fertile leaves erect, 5–25 cm; sterile leaves spreading, 3–17 cm; hairs small, appressed, cylindric, scattered along grooves of petioles and along costae and costules of adaxial blade surface. <b>Petiole</b> dark brown only on proximal 1/8 or less, green to straw-colored distally, 1–2 mm wide, firm and strawlike, not collapsed; scales bicolored or ± concolored, becoming sparse distally. <b>Blade</b> deltate to ovate-lanceolate, somewhat leathery, opaque; sterile blades dimorphic, 2–3-pinnate or 3–4-pinnate, hydathodes only slightly sunken below leaf surface. <b>Segments</b> of less dissected sterile leaves ovate-lanceolate, regularly dentate to incised with 8–16 teeth or lobes; segments of more finely dissected sterile leaves pinnatifid with 4–8 small, obovate lobes, lobe apices acute; segments of fertile leaves ascending, strongly differentiated, linear, 3–10 × 1–3 mm; margins of fertile segments revolute, covering sporangia. <b>Sporangia</b> in sori that coalesce at maturity.</span><!--

-->{{Treatment/Body
|habitat=New growth produced in spring, spores maturing in late summer. sterile leaves green over winter, senescing 2d spring. Cliff crevices and talus slopes, lowland to alpine
|elevation=0–1800 m
|distribution=B.C.;N.W.T.;Yukon;Alaska.
|discussion=<p><i>Cryptogramma sitchensis</i> is an allotetraploid species (2n = 120; E. Alverson, unpubl. data) that arose through hybridization between <i>C. acrostichoides</i> and another species, possibly the eastern Asian C. raddeana Fomin. Past difficulties in clearly distinguishing <i>C. sitchensis</i> from <i>C. acrostichoides</i> can be attributed to the frequent occurrence of sterile hybrids where the ranges of the two species overlap.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cryptogramma sitchensis
|authority=(Ruprecht) T. Moore
|rank=species
|parent rank=genus
|synonyms=Cryptogramma acrostichoides var. sitchensis;Cryptogramma crispa var. sitchensis
|basionyms=Allosorus sitchensis
|family=Pteridaceae
|habitat=New growth produced in spring, spores maturing in late summer. sterile leaves green over winter, senescing 2d spring. Cliff crevices and talus slopes, lowland to alpine
|elevation=0–1800 m
|distribution=B.C.;N.W.T.;Yukon;Alaska.
|reference=None
|publication title=Index Fil.
|publication year=1857
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_752.xml
|genus=Cryptogramma
|species=Cryptogramma sitchensis
}}<!--

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