Elaphoglossum yungense de la Sota, Darwiniana

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 yungense de la Sota, Darwiniana 18: 246, f. 5. 1973. ( Fig. 31F–L )

Range: — Peru to northwestern Argentina. In Bolivia, known from CH, CO, LP, SC.

Ecology: —Common; saxicolous and terrestrial, only accidentally epiphytic, on rocks, roadsides, and cliffs in semihumid and humid forests; 1000–2300(–3200) m.

Sect. Polytrichia (Sodiro) Christ, Neue Denkschr. Allg. Schweiz. Ges. Gesammten Naturwiss. 36(1): 22. 1899.

A small group characterized by lack of hydathodes and by bearing subulate (inrolled) scales on the blades and petioles. In some species, the subulate scales are inrolled only at the bases and flattened distally. While the group as such is distinctive and includes some of the most familiar species of Elaphoglossum in Bolivia, the delimitation of species in the group of E. barbatum is highly problematic, and detailed research throughout the Neotropics is badly needed.

Figures

FIGURE 31. A–E. Elaphoglossum angustius (Kessler et al. 11612, NY). A. Habit. B. Rhizome scale. C. Petiole. D. Sterile blade, adaxial surface. E. Sterile blade, abaxial surface. F–L. Elaphoglossum yungense (Buchtien 5037, NY). F. Habit. G. rhizome scale. H. Petiole. J. Petiolar scale. K. Sterile blade, adaxial surface. L. Sterile blade, abaxial surface.—Scale bars for habit = 5 cm, all other scale bars = 1 mm.