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 : 167-170

Drosera tomentosa A.St. -Hil. var. glabrata Saint-Hilaire (1826: 262) ( Figs. 10, 11A, B, F, H, L, M ; 12A, B ; 13D–F )

Type: — BRAZIL. Minas Gerais: Milho Verde, without date, Saint-Hilaire M-476 (holotype P!; isotypes P! MPU image!) .

Description: —Scapes exclusively glandular-pilose from base to apex, without notable eglandular indumentum, occasionally also sparsely eglandular-pilose on the basal one-third, with scattered eglandular trichomes rarely occurring further up the scapes and even on pedicels.

Distribution: — Drosera tomentosa var. glabrata is the more widespread of the two varieties, occurring on the Serra da Mantiqueira in the south, extending northwest to the Serra da Canastra (southwestern Minas Gerais) and north along the Cadeia do Espinhaço from southern Minas Gerais to central Bahia. It also occurs disjunctly at the Chapada dos Veadeiros (northeastern Goiás) and along the northern coast of Bahia. On the Espinhaço Range, this variety is more common and abundant in the southern region (especially on the Serra do Cipó and Diamantina Plateau), but relatively rare in the north ( Fig. 10).

Discussion: —Eglandular trichomes are often completely absent on the scapes of D. tomentosa var. glabrata . When present, the eglandular indumentum is overall sparse and scattered in comparison to D. tomentosa var. tomentosa , and the trichomes are also shorter and thinner. Although usually only present on the basal 1/3 of the scapes, sparse eglandular trichomes are occasionally found on the upper 2/ 3 in some D. tomentosa var. glabrata populations, but are still much less dense than in the type variety. Distinguishing the two varieties becomes especially challenging when examining old scapes of dried specimens, because the eglandular trichomes are often deciduous.

Specimens Examined: — BRAZIL. Bahia: Município de Camaçari, estrada para Arembepe , 18 June 1997, Grantsau & Lima 2 ( SPF) ; estrada para o litoral (BA-512), 30 November 2002, Rivadavia 1435 ( SPF) , Rivadavia 1446 ( SPF) , Rivadavia 1447 ( SPF) , 18 January 2003, Rivadavia & Lima 1519 ( SPF) , 14 August 2003, Rivadavia & Lima 1681 ( SPF) . Município de Palmeiras , trilha para a cachoeira da Fumaça, 20 July 2005, Rivadavia et al. 2088 ( SPF) . Goiás: Município de Alto Paraíso de Goiás, estrada Alto Paraíso–Terezina de Goiás , 10 October 1979, Heringer et al 2313 ( IBGE) , 20 March 1997, Rivadavia & Araújo 661 ( SPF) , 23 June 2007, Rivadavia & Batista 2625 ( SPF) ; km 196 da BR118, 23 June 2007, Rivadavia & Batista 2604 ( SPF) , 7 September 2008, Albuquerque 31 ( UB) . Minas Gerais: Município de Botumirim, Serra da Canastra , 20 July 1994, Rivadavia 332 ( SPF) , 19 November 1992, Mello-Silva et al. 673 ( SPF) , 13 October 2001, Rivadavia 1266 ( SPF) , Rivadavia 1273 ( SPF) . Município de Buenópolis , Parque Nacional das Sempre Vivas, atrás do alojamento de guarda-parques, 04 September 2011, Gonella et al. 450 ( SPF) . Município de Carrancas, Poço da Rasquinha , 09 June 2007, Rivadavia et al. 2593 ( SPF) ; cachoeira do Tico-Tico , 09 June 2007, Rivadavia et al. 2595 ( SPF) ; ao oeste da cidade, 09 June 2007, Rivadavia et al. 2599 ( SPF) . Município de Conceição do Mato Dentro, Parque Natural Municipal de Ribeirão do Campo , 01 August 2002, Silva et al 1642 ( BHCB) ; Serra do Cipó, Campo Redondo , caminho para nascentes do ribeirão do campo, 17 May 2008, Gonella et al. 112 ( SPF) , Gonella et al. 113 ( SPF) . Município de Congonhas do Norte, Serra Talhada , 24 April 1982, Furlan et al. CFSC 8465 ( SPF) , 23 June 2013, Gonella et al. 621 ( SPF) ; Serra da Mangabeira , 26 February 1997, Rivadavia & Pinheiro 568 ( SPF) . Município de Couto de Magalhães de Minas, c. 40 km ao leste de Diamantina , 12 May 2007, Rivadavia 2529 ( SPF) . Município de Diamantina, estrada para Conselheiro Mata , 18 July 1987, Pirani & Mello-Silva CFCR 11047 ( SPF) ; ao leste da cidade, 23 February 1992, Rivadavia 74 ( SPF) ; Biri- Biri , cachoeira da Sentinela, 10 August 2010, Gonella et al. 347 ( SPF) ; cachoeira da Toca, 25 February 1992, Rivadavia 81 ( SPF) ; cachoeira dos Cristais , 07 July 1995, Rivadavia & Pinheiro 450 ( SPF) ; estrada para Biri-Biri , 14 July 1996, Parra et al. 127 ( SPF) , 10 August 2010, Gonella et al. 344 ( SPF) ; estrada para São João da Chapada , 11 December 1997, Lima et al. 31 ( SPF) ; estrada para Tapetes Arraiolos , 12 July 1999, Rivadavia & Pinheiro 1116 ( SPF) , Rivadavia & Pinheiro 1117 ( SPF) , Rivadavia & Pinheiro 1118 ( SPF) , 31 July 2002, Rivadavia & Gibson 1373 ( SPF) ; estrada para a Gruta do Salitre , 13 May 2007, Rivadavia 2541 ( SPF) ; ao sul da cidade, 25 July 2008, Gonella et al. 170 ( SPF) , 20 April 2010, Gonella et al. 273 ( SPF) ; trilha dos Escravos, 10 August 2010, Gonella et al. 341A ( SPF) ; São João da Chapada, estrada para Macacos , 04 April 2011, Gonella et al. 434 ( SPF) ; Parque Nacional das Sempre-Vivas, 08 March 2013, Gonella et al. 605 ( SPF) . Município de Furnas, estrada Passos–Piumhi , 08 March 1997, Rivadavia 637 ( SPF) . Município de Grão Mogol , ao sul de Grão Mogol, without date, Magalhães 18091 ( RFA) ; córrego das Mortes, 03 September 1985, Zappi et al. 8310 ( SPF) ; Vale do ribeirão das Mortes , 04 September 1986, Cordeiro & Mello-Silva CFCR 10096 ( SPF) ; morro do Papo da Ema , 06 September 1990, Silva et al. CFCR 13428 ( SPF) , 06 September 1990, Silva et al. CFCR 13429 ( SPF) ; Trilha da Tropa , 02 June 1994, Rivadavia 276 ( SPF) . Município de Itacambira , alguns km antes da cidade, 16 December 1994, Rivadavia 310 ( SPF) ; ao sul da cidade, 18 December 1994, Rivadavia 326 ( SPF) ; estrada para Montes Claros , 05 March 1997, Rivadavia 602 ( SPF) , 13 October 2001, Rivadavia & Pinheiro 1292 ( SPF) , 13 February 2010, Gonella et al. 402 ( SPF) , 22 April 2010, Gonella et al. 290 ( SPF) . Município de Jaboticatubas, Serra do Cipó, Fazenda Serra do Cipó , 26 February 1992, Rivadavia 100 ( SPF) , 06 July 1995, Rivadavia 448 ( SPF) ; entre Juquinha e sede do IBAMA, 04 July 1995, Rivadavia 439 ( SPF) ; estrada Cardeal Mota – Conceição do Mato Dentro , 21 July 2008, Albuquerque et al. 14 ( UB) ; trilha do Travessão , 22 July 2008, Albuquerque et al. 17 ( UB) , Albuquerque et al. 23 ( UB) , Albuquerque et al. 26 ( UB) . Município de Joaquim Felício, Serra do Cabral , 07 March 1997, Rivadavia 631 ( SPF) , 03 July 2003, Rivadavia 1663 ( SPF) . Município de Lima Duarte, Conceição de Ibitipoca, Parque Estadual Florestal de Ibitipoca , 12 September 1991, Verardo 25371 ( UFJF) , 18 July 1992, Rivadavia 141 ( SPF) , 28 October 1995, Rivadavia & Padovese 497 ( SPF) , 29 October 1995, Rivadavia & Padovese 505 ( SPF) , 24 November 2001, Rivadavia 1324 ( SPF) , Rivadavia 1329 ( SPF) , 26 February 2005, Rivadavia 1955 ( SPF) ; Pico da Lombada , 16 December 2011, Gonella et al. 365 ( SPF) . Município de Rio Vermelho, Serra da Torre , 11 July 1999, Rivadavia et al. 1108 ( SPF) . Município de Santa Bárbara, Parque Natural do Caraça, Pico do Sol , 04 March 1992, Rivadavia 117 ( SPF) , 05 April 1993, Rivadavia 209 ( SPF) , 02 July 1995, Rivadavia 434 ( SPF) ; Pico da Carapuça , 08 September 1992, Rivadavia 149 ( SPF) , 03 July 1995, Rivadavia 436 ( SPF) ; entre Carapuça e Pico do Sol , 08 September 1992, Rivadavia 150 ( SPF) ; Pico do Canjerana , 01 July 1995, Rivadavia 431 ( SPF) ; trilha para Campo de Fora , 01 July 1995, Rivadavia 433 ( SPF) ; Cascatinha , 02 July 1995, Rivadavia 435 ( SPF) ; trilha da bica, 03 July 1995, Rivadavia 437 ( SPF) ; Tanque Grande , 03 July 1995, Rivadavia 438 ( SPF) ; Cachoeira Bocaina , 10 April 2011, Gonella & Siniscalchi 417 ( SPF) . Município de Santana do Riacho, rodovia BH– Conceição do Mato Dentro , 11 July 1987, Dokkedal et al. 10385 ( SPF) , 02 August 1990, Sakuragui et al. 21 ( ESA) , 26 April 1991, Pirani et al. 12247 ( SPF) , 08 June 1993, Roque & Nunes 13151 ( SPF) ; Fazenda Cachoeira da Capivara , 11 July 1987, Horta & Andrade 141 ( BHCB) ; rodovia Lagoa Santa–Conceição do Mato Dentro , 07 June 1989, Barbosa 409 ( HUFU) ; Alto do Palácio , 16 May 1990, Arbo et al. 4275 ( SPF) ; antes da bifurcação para Morro do Pilar , 23 February 1996, Rivadavia & Mullins 538 ( SPF) , 20 July 1993, Pirani et al. 13195 ( SPF) , 12 September 1999, Rivadavia 1167 ( SPF) , 12 November 2007, Gonella et al. 42 ( SPF) , 17 May 2008, Gonella et al. 117 ( SPF) , 21 July 2008, Gonella et al. 141 ( SPF) , 21 July 2008, Albuquerque et al. 12 ( UB) , 19 April 2010, Gonella et al. 270 ( SPF) ; distrito da Lapinha, 09 July 1999, Rivadavia et al. 1104 ( SPF) ; Vellozias Gigantes , 15 May 2008, Gonella et al. 76 ( SPF) , Gonella et al. 79 ( SPF) ; trilha para o Velozieto , 15 May 2008, Gonella et al. 81 ( SPF) , Gonella et al. 85 ( SPF) , 08 August 2010, Gonella et al. 334 ( SPF) ; estátua do Juquinha , 15 May 2008, Gonella et al. 87 ( SPF) ; km 108 da MG-10, 16 May 2008, Gonella et al. 108 ( SPF) ; km 112-113 da MG-10, 20 July 2008, Gonella et al. 125 ( SPF) ; atrás da sede do IBAMA no alto da serra, 21 July 2008, Gonella et al. 136 ( SPF) ; trilha para o Travessão e Cachoeira Congonhas , 22 July 2008, Gonella et al. 150 ( SPF) , Gonella et al. 157 ( SPF) , Gonella et al. 159 ( SPF) . Município de São Gonçalo do Rio Preto, Parque Estadual do Rio Preto , 28 June 2003, Rivadavia & Deco 1615 ( SPF) , Rivadavia & Deco 1618 ( SPF) , Rivadavia & Deco 1625 ( SPF) , Rivadavia & Deco 1629 ( SPF) ; trilha para o alto da chapada, 05 February 2009, Gonella & Viana 189 ( SPF) ; trilha para o Pico Dois Irmãos , 05 February 2009, Gonella & Viana 197 ( SPF) ; trilha para o Morro Redondo , 06 February 2009, Gonella & Viana 207 ( SPF) . Município de São Roque de Minas, Parque Nacional da Serra da Canastra , 14 July 1997, Lombardi 1898 ( BHCB) , 01 April 1999, Rivadavia & Peixoto 865 ( SPF) , 02 April 1999, Rivadavia & Peixoto 876 ( SPF) , Rivadavia & Peixoto 882 ( SPF) , 03 April 1999, Rivadavia & Peixoto 892 ( SPF) , 20 December 1991, Rivadavia 39 ( SPF) . Município de Serro , Milho Verde, Saint-Hilaire M-476 ( P; type) ; Pico do Itambé , 09 July 1995, Rivadavia & Pinheiro 457 ( SPF) , 01 August 2002, Rivadavia & Gibson 1382 ( SPF) , Rivadavia & Gibson 1386 ( SPF) , Rivadavia & Gibson 1388 ( SPF) , Rivadavia & Gibson 1393 ( SPF) , Rivadavia & Gibson 1395 ( SPF) ; estrada Milho Verde-Diamantina , 06 April 2003, Rivadavia 1584 ( SPF) ; estrada Serro- Diamantina, nascente do Rio Jequitinhonha , 09 August 2011, Gonella et al. 337 ( SPF) . Município de Tiradentes, Serra de São José , 08 June 2007, Rivadavia et al. 2586 ( SPF) . Without attribution to administrative area: Crescit in paludosis montium propè Itambé, Saint-Hilaire M 378 ( P, specimens labeled as ‘g’ in Fig. 14A ) .

Other Specimens examined of D. tomentosa s.l. (not assigned to either variety) — BRAZIL. Bahia: Município de Lençóis , 28 June 1983, Santos 15993 ( ALCB) ; Rio Capivara , 12 October 1999, Stradmann et al. 679 ( ALCB) ; trilha para a cachoeira do Sossego , 21 July 2005, Rivadavia et al. 2089 ( SPF) . Município de Palmeiras, Pai Inácio , 27 June 1995, Guedes et al. 1926 ( ALCB) , 26 September 1994, Giulietti et al. 782 ( ALCB) . Município de Rio de Contas, Serra do Marcelino , 02 February 1997, Passos et al. 4857 ( ALCB) . Goiás: Município de Alto Paraíso de Goiás, km 10 da estrada Alto Paraíso-São Jorge , 25 June 2007, Rivadavia & Batista 2635 ( SPF) . Minas Gerais: Município de Carmo do Rio Claro, Fazenda Córrego Bonito , 05 September 1961, Andrade & Emmerich 1004 ( R) . Município de Conceição do Mato Dentro, Serra do Cipó , 07 August 1933, Mello-Barreto 2436 ( BHCB) . Município de Congonhas do Norte, Serra Talhada , 24 April 1982, Furlan CFSC et al. 8473 ( SPF) . Município de Diamantina, Guinda , 05 November 1937, Mello-Barreto 9493 ( BHCB) ; subida para o Cruzeiro , 12 January 1963, Duarte & Graziela 7922 ( R) ; ao leste da cidade, 22 February 1992, Rivadavia 59 ( SPF) . Município de Grão Mogol, morro do Papo da Ema , 10 July 1985, Wanderley et al. 855 ( SP) ; Vargem do Quartel , 10 July 1985, Cerati et al. 263 ( SP) , Graças et al. 855 ( SP) ; Cachoeira Véu das Noivas, 11 February 2011, Gonella et al. 381 ( SPF) . Município de Itabirito, Serra de Itabirito , 14 June 1976, Badini & Furlo 24776 ( OUPR) , 27 July 1978, Badini 24682 ( OUPR) . Município de Itacambira, estrada para Montes Claros , 14 July 1999, Rivadavia & Pinheiro 1131 ( SPF) . Município de Jaboticatubas, Serra do Cipó, rodovia Lagoa Santa–Conceição do Mato Dentro , 07 June 1970, Joly et al. CFSC 1220 ( SP) , 14 December 1971, Semir & Saziman 537 ( SP) , 17 April 1972, Joly et al. CFSC 1883 ( SP) , 06 September 1980, Forero et al. 7762 ( SP) ; Fazenda da Serra do Cipó , 26 February 1992, Rivadavia 88 ( SPF) . Município de Joaquim Felício, Serra do Cabral , 29 June 2003, Rivadavia 1636 ( SPF) , 04 July 2003, Rivadavia 1675 ( SPF) . Município de Lima Duarte, Serra de Ibitipoca, ribeirão do Salto , 13 September 1940, Magalhães 386 ( BHCB) ; Serra de Ibitipoca , 15 October 1986, Sousa 14858 ( BHCB) . Município de Ouro Preto, Itacolomi , 25 June 1884, Glaziou 14482 (mixed collection with D. schwackei ) ( R) , 05 May 1893, without collector ( OUPR) , 1894, Gonçalves 5953 (OUPR), without date, Barbosa 1018 (R), without date, Damazio 979 ( OUPR) ; Parque do Itacolomi , 1894, Miranda 4206 ( OUPR) , 02 June 1999, Paula 23532 ( VIC) ; Serra de Lavras Novas , 11 May 1974, Badini 21562 ( OUPR) (mixed collection with D. montana ) , 27 July 1977, Badini et al. 24041 ( OUPR) ; Serra da Chapada , 21 September 1990, Alves & Becker 1571 ( R) ; Morro de São Sebastião , without date, Clemen 3471 ( OUPR) ; Serra de Ouro Preto , without date, Damazio 978 ( OUPR) ; without location data, 1904, L.D. 508 ( BHCB) . Município de Prados, Serra de São José , 07 July 1991, Stehmann s.n. ( BHCB) . Município de Santa Bárbara, Serra do Caraça , 1912, Damazio 2098 (mixed collection with D. latifolia ) ( R) . Município de Santa Luzia, Serra do Cipó , km 122, 14 April 1935, Mello-Barreto & Brade 1261 ( BHCB) , 06 July 1933, Mello-Barreto 2435 ( BHCB) . Município de Santana do Riacho, Serra do Cipó , May 1933, Costa 156 ( R) , 24 July 1966, Emygdio et al 2248 ( R) , Emygdio et al 2249 ( R) , 27 May 1970, Occhioni et al. 11407 ( RFA) , 28 May 1970, Occhioni et al. 11409 ( RFA) , 26 June 1972, Occhioni 51217 ( RFA) ; rodovia BH-Conceição do Mato Dentro , 06 September 1980, Forero et al. 7762 ( SPF) (mixed collection with D. tentaculata ) ; Serra do Cipó , 01 April 1989, Delgado & Costa 3426 ( BHCB) ; distrito da Lapinha, 01 January 2005, Rivadavia 1945 ( SPF) ; km 108 da MG-10, 16 May 2008, Gonella et al. 106 ( SPF) ; km 112-113 da MG-10, 18 April 2010, Gonella et al. 258 ( SPF) ; trilha para o Canyon das Bandeirinhas , 13 November 2007, Gonella & Lovo 61 ( SPF) . Município de São Gonçalo do Rio Preto, Parque Estadual do Rio Preto , 04 February 2009, Gonella & Viana 180 ( SPF) . Município de São João del Rey, Serra do Lenheiro , 08 July 1936, Mello-Barreto 4684 ( BHCB) . Município de Serro, Milho Verde , 05 April 2003, Rivadavia & Neves 1555 ( SPF) , Rivadavia & Neves 1565 ( SPF) . Without attribution to adiminstrative area, Serra do Treituba , entre Ubá e Serraria, without date, Magalhães 296 ( R) ; Serra Itabira do Campo , without date, Damazio 980 ( OUPR) .

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.

FIGURE 14. A, type sheet of D. tomentosa, with the selected lectotype highlighted inside a red box; t, D. tomentosa var. tomentosa; g, D. tomentosa var. glabrata; l, D. latifolia. B, detail of the lectotype of D. tomentosa. Image extracted from the Saint-Hilaire Virtual Herbarium (Pignal et al. 2013).