Elaphoglossum unduaviense 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 unduaviense Rosenst., Repert. Spec. Nov. Regni Veg. 11: 58. 1912. ( Fig. 24A–C )

= Elaphoglossum atrosquamatum Mickel, Brittonia 39(3): 315. 1987.

Range: — Venezuela; Peru to Bolivia (CO, LP); to be expected in Colombia and Ecuador; also ascribed to Costa Rica and Hispaniola by Rojas-Alvarado (2002).

Ecology: —Common; epiphytic with pendant leaves in humid montane forests; 2750–3700 m.

Sect. Lepidoglossa Christ, Neue Denkschr. Allg. Schweiz. Ges. Gesammten Naturwiss. 36(1): 21. 1899.

This is the largest section of Elaphoglossum in Bolivia and includes some of the taxonomically most difficult species groups. The main character of this section is the acicular teeth along the scale margins (both leaf and rhizome scales). The section is further characterized by flat scales, stellate hairlike scales, and/or glandular dots on blades and/or petioles. In some species, blade scales are sparse, but then the blades are thin-textured, rather than coriaceous as in sect. Elaphoglossum . Conversely, some species from other sections have blade scales and may be misplaced in this section. They are keyed below and referred to their respective sections. The species group of E. ciliatum and subsect. Muscosa have recently been monographed ( Vasco et al. 2009 a, Vasco 2011), and we follow these treatments.

Figures

FIGURE 24. A–C. Elaphoglossum unduaviense (Fay and Fay 2607, NY). A. Habit. B. Rhizome scale. C. Sterile blade, abaxial surface. D–G. Elaphoglossum melancholicum (Kessler et al. 6837, NY). D. Habit. E. Rhizome scale. F. Sterile blade base, abaxial surface. G. Petiolar scale. H–K. Elaphoglossum odontolepis (Jiménez 1681, NY). H. Habit. J. Rhizome scale. K. Sterile blade, abaxial surface.— Scale bars for habit = 5 cm, all other scale bars = 1 mm.