View source for Thelypteris pilosa var. alabamensis

{{Treatment/ID
|accepted_name=Thelypteris pilosa var. alabamensis
|accepted_authority=Crawford
|publications={{Treatment/Publication
|title=Amer. Fern J.
|place=41: 19. 1951
|year=1951
}}
|common_names=Alabama streak-sorus fern
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Leptogramma pilosa var. alabamensis
|authority=(Crawford) Wherry
|rank=variety
}} {{Treatment/ID/Synonym
|name=Stegnogramma pilosa var. alabamensis
|authority=(Crawford) K. Iwatsuki
|rank=variety
}}
|hierarchy=Thelypteridaceae;Thelypteris;Thelypteris subg. Stegnogramma;Thelypteris pilosa;Thelypteris pilosa var. alabamensis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Thelypteridaceae]]</div><div class="higher-taxon"><small>genus</small>[[Thelypteris]]</div><div class="higher-taxon"><small>subgenus</small>[[Thelypteris subg. Stegnogramma]]</div><div class="higher-taxon"><small>species</small>[[Thelypteris pilosa]]</div><div class="higher-taxon"><small>variety</small>[[Thelypteris pilosa var. alabamensis]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>short-creeping, 1.5–2.5 mm diam. <b>Leaves</b> monomorphic, evergreen, clustered, 0.1–1 cm apart, 10–45 cm. <b>Petiole</b> straw-colored, (1.5–)5–20 cm × ca. 1 mm, at base very sparsely set with ovate-lanceolate, hairy scales; blades linear-lanceolate, to ca. 30(–40) cm, slightly narrowed at base, proximal 1–3 pinna pairs slightly shortened, gradually tapered to pinnatifid apex. <b>Pinnae</b> spreading, rounded at tip, 0.5–3 × 0.5–1.3 cm, proximal pinnae stalked to 3 mm, distal pinnae broadly adnate and basiscopically decurrent, crenate or incised 1/4–1/2 width or single basal acroscopic segment on proximal pinnae nearly or quite free; segments somewhat oblique, rounded at tip; proximal pair of veins from adjacent segments running to sinus or nearly so. <b>Indument</b> on both sides of thin to stout hairs mostly 0.2–1.5 mm on costae, veins, and blade tissue. <b>Sori</b> elongate along veins, lacking indusia; sporangia often minutely hairy on capsule, hairs 0.1–0.2 mm.</span><!--

-->{{Treatment/Body
|habitat=On sandstone cliffs in river gorges
|elevation=150 m
|distribution=Ala.;Mexico in Chihuahua;Sonora.
|discussion=<p><i>Thelypteris pilosa</i> is included in the Asian and African genus Stegnogramma by K. Iwatsuki (1964). Variety alabamensis differs from <i></i>var.<i> pilosa</i> in Mexico and Central America by the much narrower blades, spreading (vs. ascending) pinnae with rounded tips, and free or nearly free basal acroscopic segment on the proximal pinnae. The Winston County, Alabama, populations are remarkably disjunct, about 2000 km from the nearest Mexican populations of both varieties.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Thelypteris pilosa var. alabamensis
|authority=Crawford
|rank=variety
|parent rank=species
|synonyms=Leptogramma pilosa var. alabamensis;Stegnogramma pilosa var. alabamensis
|basionyms=
|family=Thelypteridaceae
|habitat=On sandstone cliffs in river gorges
|elevation=150 m
|distribution=Ala.;Mexico in Chihuahua;Sonora.
|reference=None
|publication title=Amer. Fern J.
|publication year=1951
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V2/V2_600.xml
|genus=Thelypteris
|subgenus=Thelypteris subg. Stegnogramma
|species=Thelypteris pilosa
|variety=Thelypteris pilosa var. alabamensis
}}<!--

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