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 solomonii J.Prado, Brittonia 58(4): 379(–381), fig. 1. 2006. Range: — Bolivia (BE); endemic. Ecology: —Rare (known only from the type ), terrestrial in lowland forests and along road banks; 250 m . Notes: —A poorly known member of the Adiantum tetraphyllum group. Rhizomes short-creeping, nodose; rachises with two kinds of scales: linear to narrowly lanceate with pectinate bases and arachnoid; blades 2-pinnate, with (3–)4–9 pairs of lateral pinnae; pinnules ca. 3 times longer than wide, 18–21 pairs per pinna, reduced toward pinna bases and apices, margins of sterile pinnules denticulate, abaxially with hairlike scales and hairs 1–1.5 mm on the veins, adaxially glabrous, indusia oblong, bearing long-filiform scales.