Pleopeltis (Polypodiaceae) in Brazil Souza, Filipe Soares De Salino, Alexandre Phytotaxa 2021 2021-07-29 512 4 213 256 4K7Z9 Smith (2005: 282) Smith 282 2005 [177,577,1598,1625] Polypodiopsida Polypodiaceae Pleopeltis Plantae Polypodiales 34 247 Tracheophyta species stolzei   Plantsepiphytic. Rhizomesshort-creeping, with scales lanceolate, blackish, base rounded with a blackish point of attachment, apex acuminate, margin blackish and entire; frondsmonomorphic, 9–13 × 1.2–1.6 cm, petiolate, petioles terete, 0.5–1.5 cmlong, alate, scaly; laminae 8–11 cmlong, simple, lanceolate to elliptic, base cuneate, apex acuminate to aristate, margin entire, scaly on both surfaces; rachises terete, glabrescent; venationanastomosing; frond scaleslanceolate to ovate (those of petioles), ovate to stellate (those of both surfaces of laminae) or widely-elliptic to rounded (those of sori), stramineous to brown or brown to blackish, base rounded with a blackish point of attachment, apex acuminate, margin stramineous, brown to blackish and entire, erose or laciniate; sorirounded, infra-medial, covered by scales; sporesshallowly verrucate with sparse globules.   FIGURE 16.Distribution of two species of  Pleopeltisin Brazil. A.  P. stolzei; B.  P. trindadensis.   FIGURE 17.Rhizome scales of seven species of  Pleopeltisfrom Brazil. A.  P. burchelii, rhizome; B.  P. minima, rhizome; C.  P. gyroflexa; D.  P. stolzei; E.  P. minima; F.  P. macrocarpa; G.  P. bombycina; H.  P. monoides; I.  P. stolzei; J.  P. burchelii.   FIGURE 18.Venation and sori of four species of  Pleopeltisfrom Brazil. A.  P. desvauxii, anastomosing veins; B.  P. furcata, free veins; C.  P. hirsutissima, two sori surrounded by scales; D.  P. macrocarpa, sorus covered by peltate scales; E.  P. astrolepis, sorus covered by peltate scales; F.  P. desvauxii, linear marginal sori; G.  P. hirsutissima, immature sorus covered by peltate scales; H.  P. hirsutissima, mature sorus surrounded by peltate scales.   FIGURE 19.Laminar indument of three species of  Pleopeltisfrom Brazil. A.  P. alborufula,adaxial surface; B.  P. alborufula,abaxial surface; C.  P. burchelii, adaxial surface; D.  P. burchelii, abaxial surface; E.  P. monoides,adaxial surface; F.  P. monoides,abaxial surface.   FIGURE 20.Laminar scales of eight species of  Pleopeltisfrom Brazil. A.  P. alborufula,abaxial scale; B.  P. burchelii, abaxial scale; C–D.  P. minima, abaxial scales; E.  P. bombycina,abaxial scale; F.  P. trindadensis, abaxial scale; G.  P. hirsutissima, abaxial scale; H.  P. lepidopteris,abaxial scale; I.  P. minarum,abaxial scale; J.  P. bombycina,adaxial scale; K.  P. lepidopteris,adaxial scale; L.  P. minarum,adaxial scale; M–N.  P. alborufula,adaxial scales.  Specimens examined:—  BRAZIL.  Acre: Mâncio Lima, Parque Nacional da Serra do Divisor,  14 December 2010,  T.E. Almeida&  A. Salino2629( BHCB);   Amazonas: Barreririnha,  14 April 1970, B.W.P. Albuquerque304( INPA);  Tabatinga, Tribo dos Ticum,  13 October 1976,  P.I.S. Braga3119( INPA); March 1875, J.W. Traill 1289(K).   Distribution and habitat:— Ecuador, Peru, and Bolivia. In Brazil, it is known only from Acreand Amazonas states ( Fig. 16A).  Notes:—This species can be recognized by its cuneate lamina base and brown scales on the abaxial surface of the lamina. In Brazil, it can be confused with  P. macrocarpa. However,  P. stolzeihas a winged petiole unlike the petiole of  P. macrocarpa. According to MMA (2014) the species is not threatened. However, after reviewing the IUCN criteria (IUCN 2017, https://www.iucnredlist.org/resources/categories-and-criteria), the authors believe that the species should be classified as EN. It presents a small area of occurrence and occupation, being known to only one locality (Serra do Divisor). [372,577,1598,1625] Moran & Fernandez Peru Huanuco 34 247 1 Huanuco holotype 2010-12-14 BHCB T. E. Almeida & A. Salino Brazil Parque Nacional da Serra do Divisor Mancio Lima 40 253 1 Acre [610,1447,194,220] 1970-04-14 INPA Albuquerque Brazil Barreririnha 40 253 1 Amazonas [136,949,230,257] 1976-10-13 INPA Tribo dos Ticum & P. I. S. Braga Brazil Tabatinga 40 253 1 Amazonas