Moranopteris

Smith, Alan R., Kessler, Michael, León, Blanca, Almeida, Thaís Elias, Jiménez-Pérez, Iván & Lehnert, Marcus, 2018, Prodromus of a fern flora for Bolivia. XL. Polypodiaceae, Phytotaxa 354 (1), pp. 448-450 : 448-450

Key to the Bolivian species of Moranopteris

1 Blades pinnate-pinnatisect or more divided, 2–5 cm wide ......................................................................................... M. longisetosa

– Blade pinnatifid, pinnatisect, or barely 1-pinnate, <1 cm wide ........................................................................................................ 2

2 Rhizome scales with short, red-brown, setiform projections on the margins ................................................................................... 3

– Rhizome scales with entire margins, or sometimes with small gland-like processes apically ......................................................... 5

3 Veins simple and with a single hydathode per fertile segment adaxially; segments deltate; blades seemingly indeterminate ........... ......................................................................................................................................................................................... M. caucana

– Veins 1-forked and with two hydathodes per fertile segment adaxially; segments oblong; blades determinate ............................. 4

4 Costae abaxially with unbranched hairs, sometimes also with 1-branched hairs with a setiform branch; blades deeply pinnatifid to pinnatisect, proximally cut nearly to rachises .............................................................................................................. M. taenifolia

– Costae abaxially with unbranched hairs and 2(3)-branched hairs; blades pinnatifid, cut 1/3–2/3 towards the rachises .................... ...................................................................................................................................................................................... M. truncicola

5 Pinna bases distant, separated by about the width of the pinnae; veins in fertile segments simple, with one hydathode per segment adaxially ....................................................................................................................................................................... M. williamsii

– Pinnae confluent or connected by narrow rachis wings; veins in fertile segments 1-forked, with two hydathodes per segment adaxially ........................................................................................................................................................................................... 6

6 Pinnae each with>50 hairs; rhizome scales yellow-brown to castaneous ................................................................ M. aphelolepis

– Pinnae each with <30 hairs; rhizome scales stramineous .......................................................................................... M. blepharidea