Elaphoglossum laxepaleaceum Rosenst., Repert., 2018

Kessler, Michael, Moran, Robbin C., Mickel, John T., Matos, Fernando B. & Smith, Alan R., 2018, Prodromus of a fern flora for Bolivia. XXXV. Dryopteridaceae, Phytotaxa 353 (1), pp. 448-450 : 448-450

Elaphoglossum laxepaleaceum Rosenst., Repert. Spec. Nov. Regni Veg. 11: 59. 1912. ( Fig. 28A–F )

= Elaphoglossum meladenium Mickel, Fieldiana, Bot. , n.s., 27: 145. 1991.

Range: —Central Peru to Bolivia (CO, LP).

Ecology: —Fairly common; epiphytic and terrestrial, mostly in humid Polylepis forests, but also in cloud forests with Escallonia and Weinmannia ; (2600–) 3000–4100 m.

Notes: —The blade surfaces usually have abundant orange to black glandular dots on both sides, with the scales restricted to the costae or nearly so (this form has been called E. meladenium Mickel ), but on some specimens one or both blade surfaces bear scales that leave scars resembling glandular dots when breaking off. The species limits in this group are unclear. Another similar species is the African E. conforme (Sw.) J.Sm. , which is the type species of the genus.

Figures

FIGURE 28. A–F. Elaphoglossum laxepaleaceum (Buchtien 417, NY, and Kessler et al. 6724, NY). A. Habit. B. Rhizome scale and detail. C. Petiolar scale. D. Sterile blade, adaxial surface. E. Sterile blade, abaxial surface. F. Rachis scale. G–M. Elaphoglossum petiolosum (Kessler et al. 6766, NY). G. Habit. H. rhizome scale. J. Petiolar scale. K. Sterile blade, adaxial surface. L. Rachis scale. M. Sterile blade, abaxial surface.—Scale bars for habit = 5 cm, all other scale bars = 1 mm.