Aspleniaceae

Kessler, Michael & Smith, Alan R., 2018, Prodromus of a fern flora for Bolivia. XXIX. Aspleniaceae, Phytotaxa 344 (3), pp. 259-280 : 259-280

Key to the Bolivian genera of Aspleniaceae

1 Rhizome scales clathrate; leaves variable, from simple to 5-pinnate; pinnae in 1-pinnate species 0.5–20 cm long and 0.4–3 cm wide ................................................................................................................................................................................................... 2

– Rhizome scales non-clathrate; leaves 1-pinnate; pinnae 15–55 cm long and 2.5–12 wide .............................................................. 3

2 Rhizomes erect to creeping, leaves weakly to decidedly radially arranged; petiole bases not swollen ........................... Asplenium

– Rhizomes creeping, dorsiventral, leaves in 2 lateral rows; petiole bases swollen ................................................ Hymenasplenium

3 Pinnae alternate, at least distally, strongly adnate and often decurrent, the bases not overlapping the rachis; veins free toward the pinna margins (but connected at the tips) ................................................................................................................ Desmophlebium

– Pinnae opposite throughout the blades, neither adnate nor decurrent distally, the bases often partially overlapping the rachis; veins areolate toward the pinna margins ............................................................................................................................... Hemidictyum