Bommeria elegans (Davenp.) Ranker & Haufler
Descripción
Rhizomes horizontal, compact, 3–5 mm diam.; rhizome scales bicolorous, central portion dark brown, margins light brown, with marginal cilia 0.3 mm long, scales 3 X 0.8–1 mm, linearlanceolate, becoming ovate, 5 X 2 mm, concolorous at bases of stipes; fronds 26–45 X 9–22 cm; stipes 3⁄5–3⁄4 the frond length, 1.5–2.7 mm diam., dark reddish brown with scales and hairs 1 mm long at bases, glabrous otherwise, terete; blades deeply palmately lobed into 3–5(–7) lobes, the lobes entire, narrowly deltate or lanceolate, acuminate, margins setose, not recurved; abaxial surfaces with stiff, one-celled, acicular hairs 0.5 mm, most abundant among sporangia and near the blade margins, scattered, long, soft hairs 1.5–2 mm grading into narrow scales 3 mm long at frond bases; adaxial surfaces nearly glabrous, with some hairs 0.5 mm long on midveins and near the blade margins; veins netted, major veins dark near their bases; sori along all veins except near lobe midveins; spores tan; 2n=60 (Oax).A
Forma de vida
TerrestreA
Ejemplar revisado
Jal (Pringle 2581, GH, NY, UC; Rose & Painter 6928, US). Méx (Hinton 4740, US). Mor (Pringle 7946, DS, MICH, MO, NY, TEX, 11782, CAS, ENCB, MO, TEX, UC, US; Rose & Rose 11083, NY, US). Nay (McVaugh 16340, CAS, MEXU, MICH, NY, US). Oax (Mickel 6250, ENCB, NY, UC; Ranker & Yatskievych 820, UC). Zac (Correa 50, MICH).A
Distribución
México (país) EndémicoA
Elevación
750 – 2000 mA
Ecología y Hábitat
On moist banks.A
Tipo de vegetación
Mesic woods.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Bommeria elegans is distinct by its large size, deeply lobed, subglabrous blades, and lack of laminar buds. It has traditionally been placed in Hemionitis, but Ranker and Haufler (1990) transferred this species to Bommeria based on details of spores, rhizome scales, and gametophyte symmetry. Molecular evidence (Gastony & Rollo, 1995) confirms this transfer.A