www.unal.edu.co/icn/publicaciones/caldasia.htm Caldasia 31(1):9-11. 2009 NOVELTIES IN TTTRRRIIICCCHHHOOOMMMAAANNNEEESSS LL.. FFRROOMM CCOOLLOOMMBBIIAA Novedades en Trichomanes L. para Colombia ALEXANDER FRANCISCO ROJAS-ALVARADO Escuela de Ciencias Biológicas. Universidad Nacional Autónoma. Apartado 86-3000, Heredia, Costa Rica. [email protected] ABSTRACT I describe Tricomanes murilloanum A. Rojas a new species from Colombia. The new species is characterized by monomorphic fronds with only the apical pinnae pairs fertile. Additionally, Trichomanes egleri P.G. Windisch is reported as a new record for the country. Key words. Trichomanes, Hymenophyllaceae, ferns, fl ora of Colombia. RESUMEN Se describe una nueva especie, Trichomanesmurilloanum A. Rojas. La especie nueva está caracterizada por frondas monomorfas sólo con los pares de pinnas terminales fértiles. Por otra parte, Trichomanes egleri P.G. Windisch es registrada para el país. Palabras clave.Trichomanes, Hymenophyllaceae, helechos, fl ora de Colombia. Hymenophyllaceae is among the most its restricted geographical distribution to the diverse ferns families of Colombia with ca. Neotropics (with one species in Africa) and 115 species and the genus Trichomanes s.l. chromosome base number, x=32 (Ebihara et is represented by 69 species (Murillo et al. al. 2006). The Trichomanes species mentioned 2008); but more collections and exhaustive in this work belong to subgenus Trichomanes revisions are expected to reveal more that is characterized by membranous lamina species. texture with one cell thick and blade hairs at least in the veins and margin. Copeland (1938) divided Trichomanes into many genera, but for a long time, taxonomist Trichomanes murilloanum A. Rojas, sp. treated the genus as an unit, because several nov. (Fig. 1). traits such as translucent blade, tubular sori and exert receptacle made it readely TYPE: COLOMBIA. Caquetá: Municipio identifi able. Recently, Ebihara et al. (2006), de Solano, Araracuara, camino a la represa, divided Trichomanes among eight genera 21 Aug 1998, R. Alfonso & J. Tejada 299 based in molecular analysis: Abrodictyum, (Holotype: COL; Isotype: COAH). Callistopteris, Cephalomanes, Crepidomanes, Didymoglossum, Polyphlebium, Trichomanes Novum pteridophytum hoc Trichomani and Vandenboschia; from which fi ve are pinnato simile, sed plantis rupicolis ripariis, present in Colombia. This paper deals with frondibus monomorphicis brevioribus et a novelty in Trichomanes, distinguished by stipite alato dignoscendum. 9 Trichomanes L. from Colombia Figure 1. Trichomanes murilloanum... AAA... HHHaaabbbiiittt (((PP.. PPiinnttoo && HH.. BBiisscchhlleerr 119933,, COL). B. Blade detail.(((RR.. AAllffoonnssoo 229999, COL). Epipetric; rhizome 1-2 mm in diameter, catenate; blade 3-8 x 1.5-5 cm, pinnate, compact, ascending or decumbent, hairy, lanceolate, truncate to scarcely reduced the hairs 1-2 mm long, atropurpureous to at the base, acuminate at apex, glabrous; blackish, fl at or cateniform, dense; fronds rachis similar to stipe; pinnae 1-3 x 0.4- 5-16 cm long, sometimes with a cirro to 9 1.1 cm, oblong to oblanceolate, the basal cm long additionally; stipe 2-4.5 cm long, ones free, the apical ones adhered in the 0.5-0.7 mm in diameter, yellowish to gray, basiscopic side, sometimes partially adhered winged in 1/2-2/3 of the apical portion, the in acroscopic side; costae sparsely hairy, the wing less than 0.5 mm broad and gradually hairs 0.5-1 mm long; brown, catenate; veins reduced toward the base, hairy, the hairs 1-2-bifurcate, glabrous; sori 1-1.5 x 0.6-0.9 1-2 mm long, simple, brown, deciduous, mm, short-tubular, exert, not winged. 10 Rojas-A. Paratypes. COLOMBIA. Amazonas: Puerto Distribution. Amazonian lowlands of Santander, Quebrada La Manchurria, 15 Aug Colombia, Venezuela, Guyana and Brazil at 1998, R. Alfonso et al. 122 (COL, COAH). known altitudinal distribution. Meta: Serranía de La Macarena, margen Material of new distribution: COLOMBIA. izquierda del Río Guayabero, 10 km abajo de Amazonas: Puerto Santander, trocha a Caño Lozada, 550 m, 16 Jan 1959, P. Pinto & Monochoa por El Calvario, 24 Aug 1978, R. H. Bischler 193 (COL). GUYANA. Region: Alfonso & M. Fiagama 321 (COL); Río Igara- Potaro-Siparuni, Pakaraima Mountains, Paraná, Puerto Buenaventura (Hameau des upper Ireng River, Orinduik Falls, 4°43’N, indiens Witoto Jitomagaro), 25 June 1974, C. 60°02’W, 510 m, 23 Jan 1993, T. Henkel et SSSaaassstttrrreee 333444999666 ((CCOOLL)),, CCC... SSSaaassstttrrreee 333444999777 ((CCOOLL)).. al. 940 (COL, US). BRAZIL. Amazonas: Río Urubu, N of road, 20 Dec 1966, G. ACKNOWLEDGMENTS Prance et al. 3769 (COL, NY). I thank Carlos Morales for the Latin Etymology. This species is dedicated translation of the diagnoses, the curator of to María Teresa Murillo, Colombian the herbarium of the Instituto de Ciencias Pteridologist, who is making important Naturales-Universidad Nacional de taxonomic contributions to her country. Colombia (COL), Luis Carlos Jiménez for allowing me to revise their specimens, to Distribution. In the amazonian region of Julio Betancur for lodging me at his house Colombia, Guyana and Brazil at 510-550 m. and the anonymous reviewers for their This new species resembles T. hostmanianum helpful suggestions. (Klotzsch) Fée and T. pinnatum Hedw in having long stipe, pinnate and lanceolate LITERATURE CITED frond blade with free basal pinnae only, but differs in its in relatively shorter (5-16 COPELAND, E.B. 1938. Genera Hymenophy- cm vs. (5-) 15-50 cm long) fronds; winged llacearum. Philipp. J. Sci. 64: 1-110. (vs. not winged) stipe, and monomorphic EBIHARA, A., J.Y. DUBUISSON, K. IWATSUKI, S. (vs. subdimorphic) fronds with fertile HENNEQUIN & M. KITO. 2006. A taxonomic apical pinnae. Trichomanes murilloanum is revision of Hymenophyllaceae. Blumea characterized by its epipetric (vs. terrestrial in 51: 221-280. the former species) habit, growing in exposed MURILLO M.T., J. MURILLO & A. LEÓN. 2008. areas on riversides or creeks (vs. understory). Los Pteridofi tos de Colombia. Biblioteca It resembles T. jenmanii Lellinger in size, but José Jerónimo Triana Nro. 18, Instituto de the new species has monomorphic fronds Ciencias Naturales, Universidad Nacional (vs. dimorphic). de Colombia. Bogotá, D.C. Pp. 197-218. NEW SPECIES RECORD Trichomanes egleri P.G. Windisch, Bradea 4(2): 11 (1983). 1983. Type: Guyana, Mt. Latipú, P. Maas & Boyan 2651 (Holotype: Recibido: 24/11/2008 HB; Isotypes: BRG, GH, NY!, U, Z). Aceptado: 04/03/2009 11 Trichomanes L. from Colombia 12