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 tuomistoanum J.Prado, Brittonia 58(4): 384, fig. 3. 2006. Range: — Peru and Bolivia (LP); Brazil . Ecology: —Rare (5 collections known), terrestrial in lowland wet forests; 200–850 m . Notes: —Of the group of A. tetraphyllum , but pinnules 4–5 times longer than wide. Rhizomes short-creeping, nodose; rachises scaly, scales narrowly lanceate with pectinate bases; blades 2-pinnate, with 3–6 pairs of lateral pinnae; pinnules 16–23 pairs per pinna, reduced toward apices, margins of sterile pinnules irregularly serrate; both surfaces with scales on veins, scales filiform, hairlike; indusia oblong, bearing articulate hairs.