Thelypteris resinifera (Desv.) Proctor

  • Authority

    Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.

  • Family

    Thelypteridaceae

  • Scientific Name

    Thelypteris resinifera (Desv.) Proctor

  • Description

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    Species Description - Rhizome erect, bearing at apex a few thin, brown, clathrate scales. Fronds erect-spreading like a shuttlecock in a tight cluster; stipes much shorter than the blades, sparsely pubemlous or glabrous, bearing a few scattered scales like those of rhizome. Blades lanceolate or narrowly elliptic, (15-)30-100 cm long, narrowed at both ends; rhachis straw-colored, minutely and sparsely to densely pubemlous on all sides, often also minutely stipitate-glandular. Pinnae (22-)30-40 pairs, altemate or opposite, linear-lanceolate or deltate-linear, up to 13 cm long and 2 cm broad at base (but often much smaller), sessile, attenuate, oblique-falcate, the lowest segments usually longer than the rest on the acroscopic side. Segments oblique, linear- to oblong-falcate, acute, the margins entire; veins (3-)6-9 pairs, simple, very oblique; costae grooved and strigillose-hispid on adaxial side, glabrous to evenly pilosulous beneath; tissue glabrous on both sides, or rarely sparsely puberulous, always abundantly resinous- glandular abaxially. Sori round, sub-marginal; indusium roundish-reniform, reddish-resinous glandular, glabrous or nearly so.

    Distribution and Ecology - General Distribution. Florida, Greater Antilles, and continental tropical America from Mexico to northem South America. Distribution in Puerto Rico. Widely scattered in suitable habitats; recorded from Adjuntas, Aibonito, Arecibo, Cayey, Jayuya, Lares, Ponce, Rio Grande, and Trujillo Alto. Habitat. Roadside banks and along the rocky banks of streams chiefly in non-calcareous areas, at lower middle to high elevations (180-1000 m), locally frequent.

  • Discussion

    Basionym. Polypodium resiniferum Desvaux, Ges. Naturf Freunde Beriin Mag. 5: 317. 1811.

    Type. E x Herb. Desvaux, from "America calidiore" (P).

    Syn. Nephrodium panamense K. Presl, Relia. haenk. 1: 35. 1825. (Type. Haenke, from Panama, not seen.)

    Aspidium conterminum of Grisebach, Fl. Brit. W.L 691, 1864, in part, not Willd,, 1810.

    Nephrodium sprengelii of Jenman, Bull, Bot. Dept. Jamaica n.s. 3:46. 1896, incl. var., not Hooker, 1862.

    Bryopteris panamensis (K. Presl) C. Christensen, Kongel. Danske Vidensk. Selsk. Naturvidensk. Math. Afli. ser. 4, 4: 292. 1907.

    Thelypteris panamensis (K. Presl) E. St. John, Amer. Fem J. 26: 44. 1936.

    Bryopteris resinifera (Desvaux) Weatherby, Contr. Gray Herb. 114: 32. 1936.

    Lastrea resinifera (Desvaux) Copeland, Gen. fil. 140. 1947.

    Amauropelta resinifera (Desvaux) Pichi Sermolli, Webbia 31: 251. 1977.