TAB. CCXXII. 
POLYPODIUM GRACILE. 
FILICES.—Gvnzarx. Br. PorvropnrAcEx. Kaulf.  Firiczs vere. Willd. 
Gzw. Cuan. PTERIS, Linn. Sor? subrotundi (seriati, sparsi vel conferti). Znvolucrum nul- 
lum. Ar. 
PorvPopiUM eracile; glabriusculum, frondibus linearibus pinnatis, pinnis lineari-oblongis sinuato- 
pinnatifidis subdecurrentibus, soris biserialibus demum confluentibus, stipite rachique gracil- 
limis. | 
Has. Huaylluay, prope Pasco, in Andibus Peruvianis. Dom. Cruckshanks. 
- Caudex ut videtur brevis, crassitie pennse anserinse, horizontalis, dense paleaceo-squamosus, inferne radicans; 
radicibus fibrosis, ramosis, tomentosis. 
Stipites duas vel tres uncias longi, filiformes, graciles, atro-fusci, plurimi ut videtur ex eodem puncto caudicis, et 
ita subceespitosi. ! 
Frons spithamzea et ultra, linearis, pinnata. achis graciliima, flexuosa, glabra, vel ferrugineo-subpubescens. 
Pinne semiunciam ad unciam longs, erecto-patentes, oblongae vel lineari-oblongse, alternse, subcoriaceze, 
pinnatifidee, obtusse, inferne paululum decurrentes, dorso subconvexo, glabro, nitidiusculo. 
Sori sub singulas lacinias pinnarum solitarii, seriatim dispositi, subrotundi, convexi. 
Capsule numerosse, globosse, lato-annulatze, sublonge pedicellatze. 
Semina subglobosa, limbo hyalino, intus quasi e duabus vel tribus granulis composita. 
Fig. 1. Portio frondis fertilis. f. 2. Capsule. f. 3. Semina. 
"This is one of the many interesting plants with which we have been favoured by Mr. Cruck- 
shanks from the vicinity of Pasco in the Cordilleras of Peru, at an elevation of about 16,000 feet 
above the level of the sea. In its form it is slender and graceful, and it is very different from any 
other of the genus. 
