Drosera tomentosa A.St.

Rivadavia, Fernando, Gonella, Paulo Minatel, Sano, Paulo Takeo & Fleischmann, Andreas, 2014, Elucidating the controversial Drosera montana complex (Droseraceae): a taxonomic revision, Phytotaxa 172 (3), pp. 141-175 : 166

Drosera tomentosa A.St. -Hil. var. tomentosa . ( Figs 10, 11C–E, G, J, O, P ; 12C, D ; 13A–C, G )

Description: —Scapes densely eglandular-pilose (villous) on the basal half, decreasing in density towards apex; pedicels and sepals only glandular-pilose or also sparsely to densely eglandular-pilose.

Distribution: — Drosera tomentosa var. tomentosa has its core distribution on the Espinhaço Range in Minas Gerais and Bahia states, extending east to the Pico da Aliaça in eastern Minas Gerais and northeast to the Serra de Itabaiana highlands, in central Sergipe. It is the predominant variety in the northern part of the species’ range, especially on the Chapada Diamantina in Bahia where specimens with the densest eglandular-pilose (villous) scapes are found. From there, this variety extends south along the Cadeia do Espinhaço into Minas Gerais state, through the Northern Mountain Complex (spanning the mountains from Monte Azul to Itacambira), the Diamantina Plateau (including the Serra do Cabral), the Serra do Cipó, and the Serra do Ouro Branco, which represents the southernmost range limit of D. tomentosa var. tomentosa ( Fig 10).

Discussion: —The autonymous type variety, Drosera tomentosa var. tomentosa , represents plants with scapes bearing eglandular trichomes that are longer and more densely distributed on the basal half, especially towards the base of the scape, but are also present (although usually more sparsely) all the way to the apex, often even on pedicels and sepals.

Specimens Examined: — BRAZIL. Sergipe: Município de Itabaiana, Serra de Itabaiana , 13 September 1981, Andrade-Lima et al. 81-23 ( IPA) . Bahia: Município de Abaíra, caminho Jambeiro–Belo Horizonte , 14 July 1994, Ganev 3531 ( HUEFS) ; Catolés , 26 July 1995, Rivadavia 474 ( SPF) ; Abaíra, Catolés , 29 July 1995, Rivadavia & Ganev 490 ( SPF) ; Serra do Barbado , 14 July 2005, Rivadavia et al. 2007 ( SPF) . Município de Ibicoara, trilha para a cachoeira do Buracão , 12 July 2005, Rivadavia et al. 1987 ( SPF) , 12 July 2005, Rivadavia et al. 1993 ( SPF) . Município de Lençóis, estrada Lençóis–Seabra , 14 February 1994, Harley et al. 14070 ( SPF) , Harley et al. 14072 ( SPF) . Município de Mucugê , campo defronte ao cemitério, 20 July 1981, Giulietti et al. 1396 ( SPF) ; a 5 km de Mucugê, 07 September 1981, Furlan et al. 1990 ( SPF) ; 3-5 km N da cidade, 20 February 1994, Harley et al. 14296 ( SPF) ; alguns km fora de Mucugê, 23 July 1995, Rivadavia 467 ( SPF) ; estrada para Barra da Estiva , 11 July 2005, Rivadavia et al. 1978 ( SPF) . Município de Palmeiras , trilha para a cachoeira da Fumaça, 20 July 2005, Rivadavia et al. 2082 ( SPF) ; Morro do Pai Inácio , 28 April 1997, Conceição 544 ( SPF) . Município de Piatã, Serra da Tromba , 25 August 1992, Ganev 950 ( HUEFS) ; Serra do Santana , 23 July 1995, Rivadavia & Ganev 482 ( SPF) , 13 July 2005, Rivadavia et al. 1999 ( SPF) ; ao lado da capelinha no alto da serra, 29 April 2010, Gonella & Fleischmann 332 ( SPF) . Município de Rio de Contas , Pico das Almas, 10 April 1999, Forzza et al. 1139 ( SPF) , 17 July 2005, Rivadavia et al. 2041 ( SPF) , Rivadavia et al. 2050 ( SPF) ; estrada do Pico das Almas para Rio de Contas , 17 Jul 2005, Rivadavia et al. 2055 ( SPF) ; estrada para Caiambola , 18 July 2005, Rivadavia et al. 2059 ( SPF) ; Pico do Itobira , 18 July 2005, Rivadavia et al. 2064 ( SPF) , Rivadavia et al. 2071 ( SPF) . Minas Gerais: Município de Botumirim, Rio do Peixe , 06 September 2011, Gonella et al. 475 ( SPF) . Município de Buenópolis, alto da Serra do Cabral , 03 July 2003, Rivadavia & Menezes 1649 ( SPF) ; Parque Nacional das Sempre Vivas, atrás do alojamento de guarda-parques, 04 September 2011, Gonella et al. 457 ( SPF) . Município de Couto de Magalhães de Minas , c. 30 km ao leste de Diamantina, 12 May 2007, Rivadavia 2525 ( SPF) . Município de Diamantina, estrada de Tapetes Arraiolos , 31 July 2002, Rivadavia & Gibson 1374 ( SPF) ; Biri- Biri , cachoeira da Sentinela, 12 July 1999, Rivadavia et al. 1121 ( SPF) ; ao sul da cidade, 25 July 2008, Gonella et al. 174 ( SPF) , 09 August 2010, Gonella et al. 339 ( SPF) ; Trilha dos Escravos, 10 August 2010, Gonella et al. 341B ( SPF) ; estrada para Mendanha , 10 August 2010, Gonella et al. 352 ( SPF) ; São João da Chapada, estrada para Macacos , 04 September 2011, Gonella et al. 427 ( SPF) ; Inhaí , estrada que sai por trás de Inhaí, 05 September 2011, Gonella et al. 463 ( SPF) ; Campus II da UFVJM, 06 March 2013, Gonella & Baleeiro 587 ( SPF) . Município de Gouveia, estr. Curvelo–Diamantina , 09 July 2001, Costa et al. 304 ( SPF) , 02 August 2002, Rivadavia & Gibson 1399 ( SPF) . Município de Grão Mogol, Morro do Jambeiro , 08 September 1994, Rivadavia 298 ( SPF) , 14 October 1995, Rivadavia et al. 554 ( SPF) , 12 October 2001, Rivadavia 1265 ( SPF) ; Grão Mogol, estrada Grão Mogol-Montes Claros , 12 August 2010, Gonella 355 ( SPF) , 07 September 2011, Gonella et al. 484 ( SPF) . Município de Itacambira, km 91 da estrada para Montes Claros (MG-308), 07 March 2013, Gonella et al. 593, 596 ( SPF) . Município de Jaboticatubas, Serra do Cipó, Fazenda Serra do Cipó , 11 September 1994, Rivadavia 306 ( SPF) , 05 July 2003, Rivadavia 1679 ( SPF) ; trilha para o mirante, 06 July 1995, Rivadavia 449 ( SPF) ; estrada para Conceição do Mato Dentro , 09 July 1999, Rivadavia et al. 1098 ( SPF) , 04 April 2003, Rivadavia 1548 ( SPF) ; km 112 da BR-010, 12 November 2007, Gonella et al. 47 ( SPF) . Município de Joaquim Felício, Serra do Cabral , 21 April 2010, Gonella et al. 279 ( SPF) . Município de Monte Azul, estrada para Sucuruiu / Riacho Grande / Brejo Grande , 09 September 2011, Gonella et al. 506 ( SPF) . Município de Ouro Preto, km 16 estrada para Ouro Branco , 16 September 1999, Rivadavia 1170 ( SPF) . Município de Porteirinha, alto da cachoeira Véu da Noiva , 10 September 2011, Gonella et al. 510 ( SPF) . Município de Santana do Riacho, Serra do Cipó , km 112-113 da MG-10, 16 May 2008, Gonella et al. 97 ( SPF) , 20 July 2008, Gonella et al. 128 ( SPF) , 22 July 2008, Gonella et al. 160 ( SPF) ; trilha para o Travessão e Cachoeira Congonhas , 22 July 2008, Gonella et al. 149 ( SPF) ; acima da entrada para a Usina , 06 September 1987, Simão 10425 ( SPF) . Município de Serranópolis de Minas, trilha que atravessa a Cadeia do Espinhaço , 17 July 1999, Rivadavia & Pinheiro 1150 ( SPF) ; Canyon do Talhado, Cachoeira Sete Quedas , 08 September 2011, Gonella et al. 492 ( SPF) , 08 September 2011, Gonella et al. 498 ( SPF) . Without attribution to administrative area: Crescit in paludosis montium propè Itambé, Saint-Hilaire M 378 ( P; type) .

Figures

FIGURE 11. Drosera tomentosa. A, habit. B, C, stipule. D–G, leaf, abaxial surface (E, F), adaxial surface (D, G). H, J, side view of the calyx. K, L, petal. M, gynoecium and one stamen seen from above. N–P, seed. A, B, F, H, L, M correspond to D. tomentosa var. glabrata. C–E, G, J, O, P correspond to D. tomentosa var. tomentosa. A, F based on Gonella et al. 365; B on Gonella et al. 434; C, G on Gonella et al. 47; H on Gonella et al. 141; J on Ganev 3531; D, E on Rivadavia & Ganev 482; K–M on photographs of living plants; N on Rivadavia 435; O on Gonella et al. 475; P on Gonella et al. 492. Drawn by P.M. Gonella.

FIGURE 12. Drosera tomentosa. Indumentum of the scape at the base (1), middle (2), and apex (3). A, B, D. tomentosa var. glabrata. C, D, D. tomentosa var. tomentosa. A based on Gonella et al. 141; B based on Gonella et al. 125; C based on Gonella et al. 427; D based on Ganev 3531. Drawn by P.M. Gonella.

FIGURE 13. Drosera tomentosa. A, habitat, dense population growing in sandy soil of seepage at the Parque Nacional das Sempre-vivas, Minas Gerais. B, detail of the apex of the inflorescence. C–E, rosettes with emerging inflorescences, showing the variation in eglandular indumentum of the scape. F–G, flowers. A–C and G represent D. tomentosa var. tomentosa; D–F represent D. tomentosa var. glabrata. All by P.M. Gonella.