familyThelypteridaceae
genusThelypteris
subgenusThelypteris subg. Cyclosorus
speciesThelypteris augescens
Difference between revisions of "Thelypteris augescens"
Amer. Fern J. 12: 75. 1922.
Common names: Abrupt-tipped maiden fern
Illustrated
Basionym: Aspidium augescens Link Fil. Spec., 103. 1841
Synonyms: Christella augescens (Link) Pichi-Sermolli Dryopteris augescens (Link) C. Christensen
Treatment appears in FNA Volume 2.
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|common_names=Abrupt-tipped maiden fern | |common_names=Abrupt-tipped maiden fern | ||
| − | |basionyms={{Treatment/ID/ | + | |special_status={{Treatment/ID/Special_status |
| + | |code=F | ||
| + | |label=Illustrated | ||
| + | }} | ||
| + | |basionyms={{Treatment/ID/Basionym | ||
|name=Aspidium augescens | |name=Aspidium augescens | ||
|authority=Link | |authority=Link | ||
| + | |rank=species | ||
| + | |publication_title=Fil. Spec., | ||
| + | |publication_place=103. 1841 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Christella augescens | |name=Christella augescens | ||
|authority=(Link) Pichi-Sermolli | |authority=(Link) Pichi-Sermolli | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Dryopteris augescens | |name=Dryopteris augescens | ||
|authority=(Link) C. Christensen | |authority=(Link) C. Christensen | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Thelypteridaceae;Thelypteris;Thelypteris subg. Cyclosorus;Thelypteris augescens | |hierarchy=Thelypteridaceae;Thelypteris;Thelypteris subg. Cyclosorus;Thelypteris augescens | ||
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>creeping, 4–8 mm diam. <b>Leaves</b> monomorphic, evergreen, (0.5–)1–3.5 cm apart, (30–)65–140 cm. <b>Petiole</b> straw-colored, 15–70 cm × 2–7(–9) mm, at base with scales tan to brownish, linear-lanceolate, hairy at margin. <b>Blade</b> 30–70 cm, broadest at or near base, abruptly narrowed distally, apical pinna ± similar to lateral pinnae, 5–17 × 1–3(–5) cm. <b>Pinnae</b> (4–)10–22(–28) × (0.3–)0.7–1.5 cm, incised 1/2–3/4 of width; segments somewhat curved, margins revolute, those at base of proximal pinnae slightly elongate; proximal pair of veins from adjacent segments running to sinus. <b>Indument</b> abaxially of hairs 0.2–0.4 mm on costae, veins, and blade tissue, also of brownish scales 0.6–1.2 mm on costae; veins and blade tissue glabrous adaxially. <b>Sori</b> round, medial to supramedial; indusia tan, bearing hairs 0.2–0.4 mm; sporangia glabrous. <b>2n</b> = 144.</span><!-- |
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|elevation=0–50 m | |elevation=0–50 m | ||
|distribution=Fla.;s Mexico;West Indies in the Bahamas;Cuba;Central America in Guatemala. | |distribution=Fla.;s Mexico;West Indies in the Bahamas;Cuba;Central America in Guatemala. | ||
| − | |discussion=<p>Thelypteris augescens occasionally hybridizes with T. kunthii and T. ovata var. ovata in southern Florida.</p> | + | |discussion=<p><i>Thelypteris augescens</i> occasionally hybridizes with <i>T. kunthii</i> and <i>T. ovata </i>var.<i> ovata</i> in southern Florida.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Thelypteris augescens | name=Thelypteris augescens | ||
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|authority=(Link) Munz & I. M. Johnston | |authority=(Link) Munz & I. M. Johnston | ||
|rank=species | |rank=species | ||
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|publication title=Amer. Fern J. | |publication title=Amer. Fern J. | ||
|publication year=1922 | |publication year=1922 | ||
| − | |special status= | + | |special status=Illustrated |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_125.xml |
|genus=Thelypteris | |genus=Thelypteris | ||
|subgenus=Thelypteris subg. Cyclosorus | |subgenus=Thelypteris subg. Cyclosorus | ||
|species=Thelypteris augescens | |species=Thelypteris augescens | ||
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Latest revision as of 20:21, 5 November 2020
Stems creeping, 4–8 mm diam. Leaves monomorphic, evergreen, (0.5–)1–3.5 cm apart, (30–)65–140 cm. Petiole straw-colored, 15–70 cm × 2–7(–9) mm, at base with scales tan to brownish, linear-lanceolate, hairy at margin. Blade 30–70 cm, broadest at or near base, abruptly narrowed distally, apical pinna ± similar to lateral pinnae, 5–17 × 1–3(–5) cm. Pinnae (4–)10–22(–28) × (0.3–)0.7–1.5 cm, incised 1/2–3/4 of width; segments somewhat curved, margins revolute, those at base of proximal pinnae slightly elongate; proximal pair of veins from adjacent segments running to sinus. Indument abaxially of hairs 0.2–0.4 mm on costae, veins, and blade tissue, also of brownish scales 0.6–1.2 mm on costae; veins and blade tissue glabrous adaxially. Sori round, medial to supramedial; indusia tan, bearing hairs 0.2–0.4 mm; sporangia glabrous. 2n = 144.
Habitat: Limestone banks, in sun or partial shade
Elevation: 0–50 m
Distribution
Fla., s Mexico, West Indies in the Bahamas, Cuba, Central America in Guatemala.
Discussion
Thelypteris augescens occasionally hybridizes with T. kunthii and T. ovata var. ovata in southern Florida.
Selected References
None.
Lower Taxa
None.