Pleopeltis minarum (Weath.) Salino (2009: 107)

Souza, Filipe Soares De & Salino, Alexandre, 2021, Pleopeltis (Polypodiaceae) in Brazil, Phytotaxa 512 (4), pp. 213-256 : 235-236

12. Pleopeltis minarum (Weath.) Salino (2009: 107) . Figs. 9A–G , 15C , 20I, L . Polypodium minarum Weatherby (1947:78) . Type:— BRAZIL. Minas Gerais: Serra da Piedade, Claussen 78 (holotype, P01374422!)

Plants epipetric or terrestrial. Rhizomes short-creeping, with scales, lanceolate, light brown to brown, base rounded with a dark brown point of attachment, apex acuminate, margin brown and laciniate; fronds monomorphic 9–50 × 0.9–2.5 cm; petiolate, petioles long, terete, 0.5–10 cm long, without wings; laminae 8–40 cm long, pinnatisect, linear to linear-lanceolate, rachises terete, scaly; pinnae 20–45 pairs, proximal 2–4 pairs reduced, linear, medial pinnae 0.4–1.8 × 0.3–0.6 cm, linear to oblong, base adnate to the rachises, auricles present, hydathodes presents, apex rounded to acuminate, margin entire, laevigate, scaly on both surfaces; venation anastomosing; frond scales lanceolate and whitish or hyaline, rarely light brown with long-acuminate apex, base with a brown to dark brown point of attachment, margin light brown to brown or hyaline and laciniate; sori rounded, medial, covered by scales; spores papillate with sparse globules.

Selected specimens examined: — BRAZIL. Bahia: Caetité, Região de Brejinho das Ametistas , April 2008, M.S. Mendes 600 ( BHCB, HUEFS) ; Jacaraci, Morro do Chapéu , 25 April 2010, V.A.O. Dittrich 1686 ( CESJ) ; Licínio de Almeida, Serra do Salto , 11 May 2012, N. Roque 3532 ( ALCB) ; Morro do Chapéu, Fazenda Vanessa , 13 October 2006, E. Melo 4548 ( HUEFS) ; Minas Gerais: Barão de Cocais, Serra do Cambotas , 20 March 2014, M.O. Pivari 1815 ( BHCB) ; Belo Horizonte , Mina de Águas Claras , 26 April 2013, E. Miranda 178 ( BHCB) ; Belo Vale , 23 October 2001, A. Salino 7674 ( BHCB) ; Betim, Serra do Rola Moça , 5 March 1940, H.L.M. Barreto 10667 ( BHCB) ; Brumadinho, Parque Estadual Serra do Rola Moça , 28 March 2011, F.F. Carmo 5529 ( BHCB) ; Buenópolis , Parque Nacional das Sempre Vivas, 29 April 2007, T.E. Almeida 866 ( BHCB) ; Caeté, Serra da Piedade , 9 April 1996, A. Salino 2701 ( BHCB) ; Catas Altas, RPPN Serra do Caraça. , 19 April 2004, T.E. Almeida 1 ( BHCB) ; Conceição do Mato Dentro, Parque Nacional da Serra do Cipó , 13 April 1994, N.M. Castro 13 ( SP) ; Congonhas, RPPN Poço Fundo , 17 April 2015, J.A.M. Paiva 254 ( BHCB) ; Congonhas do Norte, Serra Talhada , 19 January 2004, J.R. Pirani 5137 (SP, SPF) ; Diamantina, Parque Estadual do Biribiri , 2 October 2006, T.E. Almeida 430 ( BHCB) ; Felício do Santos, APA Felício , 30 October 2004, A. Salino 9932 ( BHCB) ; Gouveia, Cadeia do Espinhaço , 17 March 2007, A. Salino 11873 ( BHCB) ; Grão Mogol, Vale do Ribeirão , 21 July 1987, R. Mello Silva 841 ( SPF) ; Ibirité, Serra do Rola Moça , s.d., M. Brandão 28468 ( PAMG) ; Igarapé, Pico Itatiaiaçu , 9 January 2008, F.F. Carmo 1637 ( BHCB) ; Itabira, Serra da Cachoeira Alta , 2 August 2006, T.E. Almeida 308 ( BHCB) ; Itabirito, RPPN Cata Branca , 20 August 2015, J.A.M. Paiva 650 ( BHCB) ; Itamarandiba, Parque Estadual da Serra Negra , 5 July 2006, A. Salino 11313 ( BHCB) ; Itambé do Mato Dentro, Distrito de Santana do Rio Preto , 5 August 2006, T.E. Almeida 312 ( BHCB) ; Joaquim Felício, Serra do Cabral , 11 February 2006, A. Salino 10851 ( BHCB) ; Mariana, RPPN Horto Alegria , 14 May 2015, J.A.M. Paiva 477 ( BHCB) ; Morro do Pilar, Serra do Cipó , 26 April 1978, H.C. Lima 485 ( RB) ; Nova Lima, Parque Estadual do Rola Moça , 27 December 2007, F.F. Carmo 1678 ( BHCB) ; Ouro Preto, Serra da Capanema , 28 February 2008, F.F. Carmo 2509 ( BHCB) ; Rio Acima , 27 January 2004, J.B. Figueiredo 227 ( BHCB) ; RPPN de Andaime , 20 May 2004, J.B. Figueiredo 472 ( BHCB) ; Rio Pardo de Minas, Parque Estadual da Serra Nova , 23 March 2012, L.A.A. Góes-Neto 724 ( BHCB) ; Rio Vermelho, Pedra Menina , 6 March 1988, J. Prado 11835 ( SPF) ; Sabará, Mina do Segredão , 9 November 2007, R.C. Mota 3481 ( BHCB) ; Santa Bárbara, Caraça, Gruta do Padre Caio , 24 May 1987, N.S. Bittencourt Júnior 1 ( BHCB) ; Santa Luzia, Serra do Cipó , 4 February 1938, H.L.M. Barreto 8922 ( BHCB) ; Santana do Riacho, Serra do Cipó , 14 October 1989, V.C. Souza 733 ( SPF) ; Santana do Pirapama, Serra do Cipó , 30 November 2009, C.C. Zappi 2691 ( SPF) ; Santo Antônio do Itambé, Parque Estadual do Pico do Itambé , 4 October 2006, T.E. Almeida 520 ( BHCB) ; Serra da Piedade , November 1915, F.C. Hoehne 6562 ( SP) ; São Gonçalo do Rio Preto, Parque Estadual do Rio Preto , 7 December 2003, A. Salino 9331 ( BHCB) ; Tiradentes, Serra de São José , 20 June 2007, T.E. Almeida 1129 ( BHCB) .

Distribution and habitat: — Pleopeltis minarum is restricted to the states of Minas Gerais and Bahia ( Fig. 10C ), and occurs mainly in the outcrops along the quartzite and ferruginous fields along the Espinhaço Mountains between 600–1800 m.

Notes: —This species is easily recognized by the presence of dense, lanceolate, generally whitish scales on all parts of the lamina. It is usually confused with P. hirsutissima , but this species can be easily differentiated by its brownish scales with base rounded and long-acuminate to the filiform apex. In addition, P. hirsutissima occurs as an epiphyte and P. minarum is always epipetric.

Figures

FIGURE 9. A–G. Pleopeltis minarum. A. Habit; B. Rhizome scale; C. Petiole Scale; D. Abaxial rachis scale; E. Adaxial laminar scale; F. Abaxial laminar scale; G. Sorus scale. H–O. P. minima. H. Habit; I. Rhizome scale; J. Petiole scale; K. Adaxial rachis scale; L. Abaxial rachis scale; M. Adaxial laminar scale; N. Abaxial laminar scale. O. Sorus scale.

FIGURE 10. Distribution of four species of Pleopeltis in Brazil. A. P. lepidopteris; B. P. macrocarpa; C. P. minarum; D. P. minima.

FIGURE 15. Spores of nine species of Pleopeltis from Brazil. A. P. lepidopteris; B. P. macrocarpa; C. P. minarum; D. P. minima; E. P. monoides; F. P. pleopeltidis; G. P. pleopeltifolia; H. P. stolzei; I. P. trindadensis. Scale bar = 20 mm

FIGURE 20. Laminar scales of eight species of Pleopeltis from 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.