Difference between revisions of "Thelypteris ovata"

R. P. St. John in Small

in Small,Ferns S. E. States 230, with plate. 1938.

Common names: Ovate maiden fern
Synonyms: Christella ovata (R. P. St. John) A. Löve & D. LöveDryopteris ovata (R. P. St. John) Broun
Treatment appears in FNA Volume 2.
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--><span class="statement" id="st-d0_s0" data-properties="stem growth form or orientation;stem diameter"><b>Stems </b>usually long-creeping, 3–6 mm diam.</span> <span class="statement" id="st-d0_s1" data-properties="leaf architecture;leaf duration;leaf atypical some measurement;leaf some measurement;leaf arrangement;leaf atypical some measurement;leaf atypical some measurement;leaf some measurement"><b>Leaves </b>monomorphic, evergreen, (0.5–) 1–4 cm apart, (30–) 55–135 (–165) cm.</span> <span class="statement" id="st-d0_s2" data-properties="petiole coloration;petiole length;petiole width;scale coloration;scale coloration;scale coloration;scale shape;scale pubescence"><b>Petiole </b>straw-colored, 15–80 cm × 2–6 mm, at base with tan to brownish, linear-lanceolate, hairy scales.</span> <span class="statement" id="st-d0_s3" data-properties="petiole variability;petiole length;apex shape;apex shape;apex shape"><b>Blade </b>about equaling petiole length, broadest at base, gradually to somewhat abruptly tapered to pinnatifid apex.</span> <span class="statement" id="st-d0_s4" data-properties="pinna atypical length;pinna length;pinna width;pinna shape;pinna width"><b>Pinnae </b>(5–) 10–25 × 0.8–2.2 cm, incised 4/5 of width;</span> <span class="statement" id="st-d0_s5" data-properties="segment orientation or shape;segment course;basal segment arrangement;middle pinna shape">segments oblique, somewhat curved, basal pair from middle pinnae often elongate parallel to rachis;</span> <span class="statement" id="st-d0_s6" data-properties="segment arrangement">proximal pair of veins from adjacent segments reaching margin at or just above sinus.</span> <span class="statement" id="st-d0_s7" data-properties="indument some measurement;scale count;scale coloration"><b>Indument </b>abaxially of hairs mostly 0.2–0.5 mm on costae, veins, and blade tissue, also sometimes of a few tan scales on costae and rachises;</span> <span class="statement" id="st-d0_s8" data-properties="blade pubescence">blades adaxially glabrous except along rachises and costae.</span> <span class="statement" id="st-d0_s9" data-properties="sorus shape;sorus position"><b>Sori </b>round, supramedial to inframarginal;</span> <span class="statement" id="st-d0_s10" data-properties="indusium coloration;indusium pubescence;hair some measurement">indusia tan, hairy, hairs mostly 0.2–0.4 mm;</span> <span class="statement" id="st-d0_s11" data-properties="">sporangia glabrous.</span> <span class="statement" id="st-d0_s12" data-properties="sporangium pubescence;2n chromosome count">2n = 72.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>usually long-creeping, 3–6 mm diam. <b>Leaves</b> monomorphic, evergreen, (0.5–)1–4 cm apart, (30–)55–135(–165) cm. <b>Petiole</b> straw-colored, 15–80 cm × 2–6 mm, at base with tan to brownish, linear-lanceolate, hairy scales. <b>Blade</b> about equaling petiole length, broadest at base, gradually to somewhat abruptly tapered to pinnatifid apex. <b>Pinnae</b> (5–)10–25 × 0.8–2.2 cm, incised 4/5 of width; segments oblique, somewhat curved, basal pair from middle pinnae often elongate parallel to rachis; proximal pair of veins from adjacent segments reaching margin at or just above sinus. <b>Indument</b> abaxially of hairs mostly 0.2–0.5 mm on costae, veins, and blade tissue, also sometimes of a few tan scales on costae and rachises; blades adaxially glabrous except along rachises and costae. <b>Sori</b> round, supramedial to inframarginal; indusia tan, hairy, hairs mostly 0.2–0.4 mm; sporangia glabrous. <b>2n</b> = 72.</span><!--
  
 
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|publication year=1938
 
|publication year=1938
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_657.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_657.xml
 
|genus=Thelypteris
 
|genus=Thelypteris
 
|subgenus=Thelypteris subg. Cyclosorus
 
|subgenus=Thelypteris subg. Cyclosorus
 
|species=Thelypteris ovata
 
|species=Thelypteris ovata
|2n chromosome count=72
 
|apex shape=somewhat abruptly tapered;pinnatifid
 
|basal segment arrangement=parallel
 
|blade pubescence=glabrous
 
|hair some measurement=0.2mm;0.4mm
 
|indument some measurement=0.2mm;0.5mm
 
|indusium coloration=tan
 
|indusium pubescence=hairy
 
|leaf architecture=monomorphic
 
|leaf arrangement=apart
 
|leaf atypical some measurement=135cm;165cm
 
|leaf duration=evergreen
 
|leaf some measurement=55cm;135cm
 
|middle pinna shape=elongate
 
|petiole coloration=straw-colored
 
|petiole length=broadest;15cm;80cm
 
|petiole variability=equaling
 
|petiole width=2mm;6mm
 
|pinna atypical length=5cm;10cm
 
|pinna length=10cm;25cm
 
|pinna shape=incised
 
|pinna width=4/5;0.8cm;2.2cm
 
|scale coloration=tan;tan;brownish
 
|scale count=few
 
|scale pubescence=hairy
 
|scale shape=linear-lanceolate
 
|segment arrangement=adjacent
 
|segment course=curved
 
|segment orientation or shape=oblique
 
|sorus position=supramedial
 
|sorus shape=round
 
|sporangium pubescence=glabrous
 
|stem diameter=3mm;6mm
 
|stem growth form or orientation=long-creeping
 
 
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-->[[Category:Treatment]][[Category:Thelypteris subg. Cyclosorus]]
 
-->[[Category:Treatment]][[Category:Thelypteris subg. Cyclosorus]]

Revision as of 13:25, 27 July 2019

Stems usually long-creeping, 3–6 mm diam. Leaves monomorphic, evergreen, (0.5–)1–4 cm apart, (30–)55–135(–165) cm. Petiole straw-colored, 15–80 cm × 2–6 mm, at base with tan to brownish, linear-lanceolate, hairy scales. Blade about equaling petiole length, broadest at base, gradually to somewhat abruptly tapered to pinnatifid apex. Pinnae (5–)10–25 × 0.8–2.2 cm, incised 4/5 of width; segments oblique, somewhat curved, basal pair from middle pinnae often elongate parallel to rachis; proximal pair of veins from adjacent segments reaching margin at or just above sinus. Indument abaxially of hairs mostly 0.2–0.5 mm on costae, veins, and blade tissue, also sometimes of a few tan scales on costae and rachises; blades adaxially glabrous except along rachises and costae. Sori round, supramedial to inframarginal; indusia tan, hairy, hairs mostly 0.2–0.4 mm; sporangia glabrous. 2n = 72.

Distribution

North America, Mexico, West Indies, Central America.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Scales usually absent on costae abaxially; blade tissue glabrous adaxially; petiole base and stem scales brownish. Thelypteris ovata var. ovata
1 Scales few, very narrow, on costae abaxially; blade tissue minutely pubescent or glabrous adaxially; petiole base and stem scales tan. Thelypteris ovata var. lindheimeri