Selaginella umbrosa Lem. ex Hieron.

Valdespino, Ivan A., 2015, Novelties in Selaginella (Selaginellaceae - Lycopodiophyta), with emphasis on Brazilian species, PhytoKeys 57, pp. 93-133 : 111

Selaginella umbrosa Lem. ex Hieron.

Selaginella umbrosa Lem. ex Hieron., in Engler & Prantl, Nat. Planzenfam. 1(4): 683. 1901. - Type. Guatemala. [exact locality and date unknown], G.U. Skinner s.n (K-n.v.).

Additional specimens examined.

BRAZIL. Roraima: vicinity of Auaris, 04°03'N, 64°22'W, 760-800 m, 6 Feb 1969, Prance et al. 9653 (NY, MG, P-image); Rio Catrimani, Ponto 12, 70 km N of Missão Catrimani, 13 Feb 1975, Pires 15 (MG, RB); Rio Uraricoera, Canal Maracá, Cachoeira Menori, 03°16'N, 61°55'W, 24 Feb 1979, Pires et al. 16789 (MG); SEMA Ecological Reserve, Ilha de Maracá, river near the Casa da Maracá, 11 May 1987, Milliken 195 (BM-n.v., INPA, MIRR-n.v.). Without precise locality: Mountain from North of Brasil, s.d., s.col. ex Herb. Gaillary (P-image).

Discussion.

Selaginella umbrosa occurs in Central America, Barbados, Colombia, Trinidad, and Tobago ( Alston et al. 1981, Fraile 1995, Smith 1995, Cremers et al. 2007, Mostacero 2008), and Ecuador ( Tropicos 2015a). It is here documented from Brazil, were it may be confused with Selaginella haematodes (Kunze) Spring because of its red stems and leaves. As pointed out by Valdespino (1993), Selaginella umbrosa differs from the latter by its lateral leaves with acroscopic margins ciliate, especially on proximal ½ (vs. obscurely serrulate to entire), and median leaves broadly ovate to ovate-lanceolate (vs. lanceolate to lanceolate-oblong), the bases with outer, ciliate auricles (vs. bases rounded to oblique without outer auricles).