Selaginella seemannii Baker

Valdespino, Ivan A., 2015, Novelties in Selaginella (Selaginellaceae - Lycopodiophyta), with emphasis on Brazilian species, PhytoKeys 57, pp. 93-133 : 110-111

Selaginella seemannii Baker

Selaginella seemannii Baker, J. Bot. 21: 244. 1883. - Type. Nueva Granada [Colombia]. Chocó: Cacagual [Island], 1848, B.C. Seemann 1006 (holotype: K! [K000589106]; isotypes: B-fragment! [B 20 0095503], BM! [BM000936546]).

Selaginella barbacoasensis Hieron., Hedwigia 43: 46. 1904. - Type: Colombia. Nariño: Barbacoas, [03°54'04.16"N, 73°04'24.13"W], 6 Aug 1880, F.C. Lehmann 89 (holotype: B! [B 20 0130329]; isotypes: BM! [BM000936545], G!).

Additional specimens examined.

PANAMA. Coclé: Bosque cercano a Coclecito, 28 Mar 1989, Galdames et al. 362 (PMA); Cerro Morenito cerca de Coclecito, 24.8 km desde la entrada de Llano Grande hacia Coclecito, 230 m, 10 Jan 1992, Valdespino et al. 1357 (BM, CR, K, MO, NY, PMA, UC, US). Veraguas: Santa Fe, Parque Nacional Santa Fe, El “2”, entrando por Guinea ( Río Concepción), UTM Zone 17: 0963119N [8°42'46.68"N], 0501054E [80°59'25.50"W], 22 Jul 2008, Hernández 989 (PMA). BRAZIL. Roraima: Boa Vista, Reserva Ecológica de Maracá, track to Santa Rosa, ca. 600 m E of main Estação buildings, ca. 80 m, 12 Mar 1987, Edwards & Willikin 2541 (BM, NY).

Discussion.

Selaginella seemannii is known to occur in Colombia, Guyana, Suriname, French Guiana, Ecuador, and Peru ( Alston et al. 1981, Cremers et al. 2007). It is also found in Panama and Brazil ( Valdespino 1995) and here is formally vouchered for those countries.

Selaginella seemannii is similar to and may be confused with Selaginella porelloides (Lam.) Spring. Selaginella seemannii can be distinguished by its ovate (vs. semicordate) lateral leaves with the upper surfaces glabrous throughout (vs. pubescent near the basiscopic margins), obtuse (vs. narrowly obtuse to slightly acute) apices, lower leaf surfaces with obscure (vs. conspicuous) idioblasts, bases of median leaves oblique with an outer auricle (vs. cordate to rounded, non-auriculate), and bases of axillary leaves rounded (vs. usually cordate).