Prodromus of a fern flora for Bolivia. XXXV. Dryopteridaceae Author Kessler, Michael Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, CH- 8008 Zurich, Switzerland Author Moran, Robbin C. New York Botanical Garden, 2900 Southern Blvd., Bronx, New York, 10458 - 5126, USA Author Mickel, John T. New York Botanical Garden, 2900 Southern Blvd., Bronx, New York, 10458 - 5126, USA Author Matos, Fernando B. Universidade Federal do Paraná, Departamento de Botânica, Caixa Postal 19031, 81531 - 980, Curitiba, PR, Brasil Author Smith, Alan R. Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, CH- 8008 Zurich, Switzerland & University Herbarium, 1001 Valley Life Sciences Bldg. # 2465, University of California, Berkeley, CA 94720 - 2465, USA & Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, CH- 8008 Zurich, Switzerland text Phytotaxa 2018 2018-06-11 353 1 448 450 http://dx.doi.org/10.11646/phytotaxa.353.1.1 journal article 10.11646/phytotaxa.353.1.1 1179-3163 Polybotrya crassirhizoma Lellinger, Amer. Fern J. 62(2): 49, f. 1, 8. 1972. Range: —Western Amazonia from southern Colombia and western Brazil to Bolivia (CO). Ecology: —Rare; hemiepiphytic in humid forests, on clay soils; to 1500 m . Notes: — Polybotrya polybotryoides (Baker) Christ from southern Mexico to central Peru may occur in Bolivia . It differs from P. crassirhizoma and P. fractiserialis by anastomosing veins of the sterile pinnules, conform apical pinnae, and often entire to crenulate ( vs . serrulate) pinna margins.