Show Lower Taxa
Difference between revisions of "Thelypteris ovata"
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- | + | --><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 | ||
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| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |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 | ||
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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 |