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Ferns and relatives / Helechos y afines
Thelypteris patens (Sw.) Small
EOL Text
Rare
United States
Rounded National Status Rank: NNR - Unranked
Rounded Global Status Rank: G5 - Secure
Reasons: Widespread (Greater and Lesser Antilles, Trinidad and continental tropical America from Mexico to Argentina) and common. Lellinger (1985) lists one historical escape in Florida.
Rhizome erect, sometimes forming a caudex up to c. 30 cm high; rhizome scales up to 5 mm long, light brown, ovate, almost entire, pointed. Fronds tufted, arching, not proliferous, coriaceous. Stipe up to 70 cm long from the base to the first large pinnae, matt brown, thinly set with minute white hairs. Lamina up to 1.6 × 0.66 m, lanceolate-oblong in outline, deeply 2-pinnatifid, apex pointed, abruptly decrescent towards the base into a long series of strongly reduced pinnae. Pinnae linear-oblong, ultimate lobes oblong, slightly falcate,entire; upper surface densely hairy along the costae with white hairs, sparsely on the veins, under surface sparsely glandular with scattered, pale hairs; veins not meeting below or in the sinus. Rhachis pale brown, hairless. Sori round, up to 25 per lobe, halfway between costule and margin, almost reaching the top of each lobe; indusia subcircular to reniform, lacerate, glandular.
pulcher: beautiful, handsome
Sudan, E. and W. tropical Africa, S. Africa, Madagascar and the Mascarenes.
United States
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Thelypteris+patens |
Varieties 3 (1 in the flora): North America, s Mexico, West Indies in the Antilles, Central America, South America to s Brazil and n Argentina.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501292 |
Polypodium patens Swartz, Prodr., 133. 1788; Christella patens (Swartz) Holttum; Cyclosorus arcuatus (Poiret) Alston; Dryopteris patens (Swartz) Kuntze
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501292 |
Type collection for Dryopteris equestris var. mentiens C. Chr.
Catalog Number: US 826296
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Preparation: Pressed specimen
Collector(s): H. von Türckheim
Year Collected: 1908
Locality: Cobán, Alta Verapaz, Guatemala, Central America
Elevation (m): 1350 to 1350
- Type collection: Christensen, C. F. A. 1920. Kongel. Danske Vidensk. Selsk. Skr., Naturvidensk. Math. Afd. ser. 8. 6: 56.
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | This image was obtained from the Smithsonian Institution. Unless otherwise noted, this image or its contents may be protected by international copyright laws. |
Source | http://collections.mnh.si.edu/search/botany/?irn=2152115 |