Prodromus of a fern flora for Bolivia. XXX. Thelypteridaceae Author Smith, Alan R. University Herbarium, 1001 Valley Life Sciences Bldg. # 2465, University of California, Berkeley, CA 94720 - 2465 Author Kessler, Michael Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, CH- 8008 Zurich, Switzerland text Phytotaxa 2017 2017-12-08 331 1 1 34 http://dx.doi.org/10.11646/phytotaxa.331.1.1 journal article 10.11646/phytotaxa.331.1.1 1179-3163 Macrothelypteris torresiana (Gaudich.) Ching, Acta Phytotax. Sin. 8: 310. 1963 . Range: —Southeastern USA ; Antilles; Mexico to Bolivia (BE, CH , CO, LP, SC, TA), northern Argentina , Paraguay , and southern Brazil ; tropical and subtropical Africa and Asia; Pacific Islands; first collected in Bolivia in 1980. Ecology:— Common, widely naturalized; terrestrial along forest edges, roadsides, and stream margins, somewhat weedy; to 1700(–2200) m. Notes:— Superficially, this is most similar to unrelated genera such as Ctenitis , Megalastrum , and Lastreopsis ( Dryopteridaceae ), from which it differs by having hyaline, acicular hairs abaxially on the blades, two vascular bundles in the petioles, and axes rounded or flattened adaxially (costae and rachises lacking grooves).