View source for Thelypteris dentata

{{Treatment/ID
|accepted_name=Thelypteris dentata
|accepted_authority=(Forsskål) E. P. St. John
|publications={{Treatment/Publication
|title=Amer. Fern J.
|place=26: 44. 1936
|year=1936
}}
|common_names=Downy maiden fern;downy shield fern;tapering tri-vein fern
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Polypodium dentatum
|authority=Forsskål
|rank=species
|publication_title=Fl. Aegypt.-Arab.,
|publication_place=185. 1775
}}
|synonyms={{Treatment/ID/Synonym
|name=Christella dentata
|authority=(Forsskål) Brownsey & Jermy
|rank=species
}} {{Treatment/ID/Synonym
|name=Cyclosorus dentatus
|authority=(Forsskål) Ching
|rank=species
}} {{Treatment/ID/Synonym
|name=Dryopteris dentata
|authority=(Forsskål) C. Christensen
|rank=species
}} {{Treatment/ID/Synonym
|name=Dryopteris mollis
|authority=(Swartz) Hieronymus
|rank=species
}} {{Treatment/ID/Synonym
|name=Thelypteris reducta
|authority=Small
|rank=species
}}
|hierarchy=Thelypteridaceae;Thelypteris;Thelypteris subg. Cyclosorus;Thelypteris dentata
|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. Cyclosorus]]</div><div class="higher-taxon"><small>species</small>[[Thelypteris dentata]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="stem growth form or orientation;stem diameter"><b>Stems </b>short-creeping, 4–6 mm diam.</span> <span class="statement" id="st-d0_s1" data-properties="leaf growth form;leaf duration;leaf some measurement;leaf reproduction;pinna condition or size"><b>Leaves </b>often somewhat dimorphic, evergreen, often closely placed, 50–150 cm, fertile leaves with longer petioles and more contracted pinnae.</span> <span class="statement" id="st-d0_s2" data-properties="petiole coloration;petiole length;petiole width;scale coloration;scale shape;scale pubescence"><b>Petiole </b>often purplish brown, 15–50 cm × 3–6 mm, at base with brown, linear-lanceolate, hairy scales.</span> <span class="statement" id="st-d0_s3" data-properties="blade atypical some measurement;blade some measurement;blade atypical quantity;blade quantity;blade position;pinna size;blade shape"><b>Blade </b>(25–) 40–100 cm, 1–4 (–6) proximal pairs of pinnae reduced, blade gradually tapered to pinnatifid apex.</span> <span class="statement" id="st-d0_s4" data-properties="pinna length;pinna width;pinna shape;pinna width"><b>Pinnae </b>7–17 × 1–3 cm, incised 1/2–3/4 of width;</span> <span class="statement" id="st-d0_s5" data-properties="segment shape;basal segment orientation;basal segment shape">segments rounded at apex, basal acroscopic segment of proximal pinnae often auriculate;</span> <span class="statement" id="st-d0_s6" data-properties="segment arrangement;segment fusion;angle shape;vein architecture;vein some measurement">proximal pair of veins from adjacent segments united at obtuse angle below sinus with excurrent vein 2–4 mm.</span> <span class="statement" id="st-d0_s7" data-properties="indument some measurement;hair height or length or size"><b>Indument </b>abaxially of uniformly short hairs 0.1–0.2 mm on costae, veins, and blade tissue;</span> <span class="statement" id="st-d0_s8" data-properties="hair fragility;hair some measurement">veins adaxially with stouter hairs, also with hairs 0.1–0.2 mm on blade tissue.</span> <span class="statement" id="st-d0_s9" data-properties="sorus shape;sorus position"><b>Sori </b>round, medial to supramedial;</span> <span class="statement" id="st-d0_s10" data-properties="indusium coloration;indusium pubescence;hair some measurement">indusia tan, pubescent, hairs 0.1–0.3 mm;</span> <span class="statement" id="st-d0_s11" data-properties="gland coloration;gland architecture">sporangial stalks with orangish, stalked glands.</span> <span class="statement" id="st-d0_s12" data-properties="2n chromosome quantity">2n = 144.</span><!--

-->{{Treatment/Body
|habitat=Damp woods
|elevation=0–100 m
|distribution=Ala.;Fla.;Ga.;Ky.;La.;s Mexico;West Indies in the Antilles;South America to n Argentina;native to tropical and subtropical Asia;Africa
|introduced=true
|discussion=<p>Thelypteris dentata probably does not persist northward in areas (such as Kentucky) where winters are sometimes severe (R. Cranfill 1980).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Thelypteris dentata
|authority=(Forsskål) E. P. St. John
|rank=species
|parent rank=subgenus
|synonyms=Christella dentata;Cyclosorus dentatus;Dryopteris dentata;Dryopteris mollis;Thelypteris reducta
|basionyms=Polypodium dentatum
|family=Thelypteridaceae
|habitat=Damp woods
|elevation=0–100 m
|distribution=Ala.;Fla.;Ga.;Ky.;La.;s Mexico;West Indies in the Antilles;South America to n Argentina;native to tropical and subtropical Asia;Africa
|introduced=true
|reference=None
|publication title=Amer. Fern J.
|publication year=1936
|special status=Introduced;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V2/V2_707.xml
|genus=Thelypteris
|subgenus=Thelypteris subg. Cyclosorus
|species=Thelypteris dentata
|2n chromosome quantity=144
|angle shape=obtuse
|basal segment orientation=acroscopic
|basal segment shape=auriculate
|blade atypical quantity=4;6
|blade atypical some measurement=25cm;40cm
|blade position=proximal
|blade quantity=1;4
|blade shape=gradually tapered;pinnatifid
|blade some measurement=40cm;100cm
|gland architecture=stalked
|gland coloration=orangish
|hair fragility=stouter
|hair height or length or size=short
|hair some measurement=0.1mm;0.3mm
|indument some measurement=0.1mm;0.2mm
|indusium coloration=tan
|indusium pubescence=pubescent
|leaf duration=evergreen
|leaf growth form=dimorphic
|leaf reproduction=fertile
|leaf some measurement=50cm;150cm
|petiole coloration=purplish brown
|petiole length=15cm;50cm
|petiole width=3mm;6mm
|pinna condition or size=contracted
|pinna length=7cm;17cm
|pinna shape=incised
|pinna size=reduced
|pinna width=1/2;3/4
|scale coloration=brown
|scale pubescence=hairy
|scale shape=linear-lanceolate
|segment arrangement=adjacent
|segment fusion=united
|segment shape=rounded
|sorus position=medial;supramedial
|sorus shape=round
|stem diameter=4mm;6mm
|stem growth form or orientation=short-creeping
|vein architecture=excurrent
|vein some measurement=2mm;4mm
}}<!--

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