Elaphoglossum rosettum R.C.Moran & Mickel, Brittonia

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 rosettum R.C.Moran & Mickel, Brittonia 56(3): 201. 2004. ( Fig. 50A–E )

Range: — Endemic to Bolivia ( LP); known only from the type collection, made in 1926 .

Ecology: —Rare; saxicolous in humid forests; 2400 m.

Notes: —Resembling E. beaurepairei but differing by shorter leaves, blades widest below the middle, shorter fertile fronds, and the abaxial blade surfaces with at least a few subulate scales mixed with flattish, circular ones only about 0.2 mm wide. Probably has a rosette-like growth habit, with the sterile fronds spreading and forming a loose rosette around the centrally attached erect fertile ones.

Figures

FIGURE 50. A–E. Elaphoglossum rosettum (Tate 618, NY). A. Habit. B. Rhizome scale. C. Petiole detail. D. Adaxial blade detail. E. Abaxial blade detail. F–L. Elaphoglossum heteromorphum (Solomon 7940, NY). F. Habit. G. Rhizome scale. H. Petiole detail. J. Petiole detail. K.Adaxial blade detail. L. Abaxial blade detail.—Scale bars for habit = 5 cm, all other scale bars = 1 mm.