Prodromus of a fern flora for Bolivia. XXVII. Pteridaceae Author Kessler, Michael Systematic Botany, University of Zurich, Zollikerstrasse 107, CH- 8008 Zurich, Switzerland Author Smith, Alan R. University Herbarium, 1001 Valley Life Sciences Bldg. # 2465, University of California, Berkeley, CA 94720 - 2465 Author Prado, Jefferson Instituto de Botânica, Av. Miguel Estéfano, 3687, CEP 04301 - 902, São Paulo, SP, Brasil text Phytotaxa 2017 2017-12-22 332 3 201 250 http://dx.doi.org/10.11646/phytotaxa.332.3.1 journal article 10.11646/phytotaxa.332.3.1 1179-3163 Adiantum platyphyllum Sw., Kongl. Vetensk. Akad. Handl. , n.s., 1817(1): 74, t. 3, fig. 6. 1817. Range: — Ecuador to Bolivia (BE, CO, LP, SC); Paraguay and Brazil . Ecology: —Common, terrestrial in lowland evergreen forests; 150–1200 m . Notes: —A distinctive species, possibly allied to other 1-pinnate species like A. poeppigianum , as well as other less divided extraterritorial species. Rhizomes short-creeping, nodose; rachises glabrous; blades pinnate (rarely 2- pinnate at bases); pinnae not dimidiate, ovate-lanceolate, apices long-acute to long-acuminate, not reduced toward blade or pinna bases, with stalks 0.5–2.5 cm , color of stalks passing into pinna bases, abaxially decidedly glaucous and glabrous, sterile margins serrulate; veins ending in teeth at pinna margins; sori borne on acroscopic and basiscopic margins, sometimes at proximal margins; indusia oblong, short, linear-arcuate, glabrous.