Elaphoglossum productum 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 productum Rosenst., Repert. Spec. Nov. Regni Veg. 6: 315. 1909. ( Fig. 48E–H )

Range: —Venezuelan tepuis; Andes of Venezuela, Colombia, Ecuador, and Bolivia (BE, CO, LP); to be expected in Peru.

Ecology: —Uncommon; epiphytic in humid forests; (300–) 700–1750 m.

Notes: —The rhizomes are more compact and the rhizome scales are longer and paler than in E. buchtienii or E. dolichopus . The divided blade scales are reminiscent of those of E. glaucescens and E. subarborescens , but these have brown blade scales and narrower leaves with relatively longer petioles. Specimens of E. productum from lower elevations ( 300–450 m) have thinner blade texture, longer petioles, and shorter rhizome scales, and may represent a distinct species.

Figures

FIGURE 48. A–D. Elaphoglossum pachyphyllum (Beck 7251, NY). A. Habit. B. Rhizome scale. C. Venation. D.Abaxial blade detail. E–H. Elaphoglossum productum (Buchtien 7048, NY). E. Habit. F. Rhizome scale. G. Abaxial blade detail. H. Abaxial blade scale.— Scale bars for habit = 5 cm, all other scale bars = 1 mm.