petiolata, petiolo purpurascente, 1” longo compresso; costa 
nervigne distantes, immersi; sori intramarginales, impressi; 
margo soros snperans inerassatus vix "4““ latus, stomatibus 
destitutns. 
Boliviae Yungas (D’Orbigny 2%29.). 
Recedit ab Pitt. stipitata, qaacum conditione sororam 
et marginis eos superantis congruit, paleis rhizomatis Iatio- 
ribus sensim attenuatis obtuse dense denticulatis e cellnlarum 
seriebus plurihus formatis, porro et lamina angustiore. 
Vittaria gracilis Moritz. mse. 
Rhizoma abbreviatum, paleis 2—2'%‘“ longis, membra- 
naceis fuseis, Incidulis, subovato-lanceolatis acuminatis, inte- 
gerrimis vel subintegerrimis e cellnlis irregularibus ad 1% se- 
riatis formatis vestitum; folia membranacea, siceitate olivacea, 
falcata ad 8” longa, 2% — 3” lata, linearia, utrinque acı- 
minata, basi longius attenuata petiolnm alatum ancipitem pur- 
purascentem "%—1” longum efformantia; costa manifesta; 
nervi »— %“ distantes, obscare translecentes, sub angulo 
18° deeurrentes abbreviati, non imbricati; sori levissime im- 
pressi; margo sterilis vix Yz“ latus. 
Columbia, Colonia Tovar (Moritz 464.) 
Intermedia inter Yitt. Karstenianam et Gardnerianum, 
ab utraque paleis ovatis acuminatis cellulis formae irregalaris 
basi seriebus nnmerosis dispositis recedit; a priore Porro 
nervis quamquam aequaliter distantibns, tamen angulo acntiore 
ascendentibus, sorisque margine magis approximalis, a Poste- 
riore substantia laminae tenwiore. 
- Vittaria debilis Kuhn, 
Folia membranacea, firma, laete viridia, 1”— 1%“ longa, 
1%‘ lata, linearia, obtasa, hasi attenuata, sessilia, costata; 
costa supra leviter sulcata; nervi distantes subimmersi obli- 
5* 
