Drosera camporupestris Rivadavia 2003
Creators: name: Gonella, Paulo Minatel
name: Sano, Paulo Takeo
name: Rivadavia, Fernando
name: Fleischmann, Andreas
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Droseraceae
Drosera
Drosera camporupestris

description: 5. Drosera camporupestris Rivadavia (2003: 85). Figures 6b, 9d–f
Type: — BRAZIL. Minas Gerais: Jaboticatubas, Serra do Cipó, em campos rupestres dentro da Fazenda da Serra do Cipó, 1215 m, 06 July 1995, Rivadavia-Lopes 447 (holotype SPF-00155000!; isotypes K-001204973!, NY-00688465!, R-000210201!, R-000210201a!, SP-000599!, SP-000600!).
Perennial, rosetted, acaulescent. Leaves in a lax rosette, active leaves in number of 1–3 (rarely 4 or 5), erect to semierect, with circinate vernation, petioles 2–3 times narrower than the lamina, linear, (30–) 40–105 mm long, lamina narrowly lanceolate; stipules narrowly triangular, large (9–16 mm long) and conspicuous, undivided, golden-brown, apex fimbriate. Dense indumentum of long white eglandular and TSG trichomes on leaves, scapes, pedicels and sepals. Petals narrowly obovate, not overlapping when fully expanded at peak of anthesis, pink; gynoecium 3-carpelate, styles bifurcated at the base. Seeds oblong-fusiform or ellipsoid, testa reticulate.
Illustrations: — Silva & Giulietti [1997: 10, fig. 13B—habit, as Drosera chrysolepis Taubert (1893: 505)]; Rivadavia (2003: 86, figs. 3.1A–F—habit and details).
Distribution: — Brazil (Southeast: MG), endemic. Found on the Serra do Cipó and Diamantina Plateau, in the central Espinhaço Range of Minas Gerais (Fig. 6b).
Habitat: —Perennially wet areas with sandy soils in campo rupestre vegetation, between 1100–1400 m a.s.l.
Phenology:— Found with flowers mainly from May to September, which corresponds to the dry season, but flowering specimens were also encountered in November and February.
Conservation Status: —Vulnerable (VU) B1ab(iii). The calculated extent of occurrence (EOO= 5,397.4 km 2) satisfies the VU criteria, while the area of occupancy (AOO= 64 km 2) qualifies it as EN. It is here placed in the less severe category of threat due to the occurrence in large populations inside two National Parks (Sempre-Vivas and Serra do Cipó) and at least one State Park (Rio Preto). The species is threatened by habitat destruction for agriculture and cattle ranching purposes, and by reduction of habitat quality by invasive grasses, anthropogenic fires, and climate change.
Notes: —The species is closely related to D. chrysolepis with which it shares a similar leaf shape, large, triangular, golden-brown stipules, and general indumentum, but is easily distinguished by the lack of a conspicuous stem and the fewer active leaves per rosette, usually only one to three (Fig. 10d; vs. 3–numerous, Fig. 11g –i). It is further distinguished by the usually longer petioles and leaves, and by the narrowly obovate petals that do not overlap during anthesis (Fig. 10f; vs. obovate to broadly obovate, overlapping at anthesis, Fig. 11k).
Silva & Giulietti (1997) and Correa & Silva (2005) included specimens of D. camporupestris under D. chrysolepis in their treatments, suggesting the former were specimens of the latter that had toppled over and become covered in soil.
Specimens examined: —For an extensive listing, see Rivadavia (2003: 87).
Additional specimens examined: — BRAZIL. Minas Gerais: Diamantina, Parque Nacional das Sempre Vivas, 03 March 2013, Gonella et al. 606 (SPF). Santana do Riacho, Serra do Cipó, km 112-113 da MG-10, 16 May 2008, Gonella et al. 98 (SPF). Santana do Pirapama, Serra do Cipó, trilha da Senhorinha, 27 July 2009, Zappi & Taylor 2259 (SPF). Serro, Milho Verde, cachoeira do Arco-Íris, 13 January 1998, Chaves s.n. (BHCB-42737).
description: Published as part of Gonella, Paulo Minatel, Sano, Paulo Takeo, Rivadavia, Fernando & Fleischmann, Andreas, 2022, A synopsis of the genus Drosera (Droseraceae) in Brazil, pp. 1-76 in Phytotaxa 553 (1) on pages 25-26, DOI: 10.11646/phytotaxa.553.1.1, http://zenodo.org/record/6796689