NO. 1867 AMERICAN FERNS — CHRISTENSEN 393 



fidum sensim attenuata, versus basin abrupte reducta, supra obscure viridi, 

 nitida, subtus pallidiore, submembranacea vel firmo-herbacea, bipinnatifida; 

 rachi trisulcata breviter hispido-pilosa. Pinnis infimis 2 — 3-jugis tuberculi- 

 formibus, c. 8 cm inter se remotis, sequentibus 2 — 3-jugis auriculiformibus 4 — 5 

 cm inter se remotis, medialibus maximis, 10 cm longis, 2 cm latis, sessilibus 

 aerophoro tuberculiiormi instructis, a basi versus apicem breviter acuminatum 

 sensim attenuatis, supra ad costa venasque sparsim et brevisime puberulis, 

 subtus ad costas costulasque pilis fuscis brevibus dense setulosis ac ad costas 

 paleis nonnullis nigro-brunneis minutis instructis, inter venas utrinque sub- 

 glabra, ad alam i mm latam pinnatifidis. Laciniis approximatis, marginibus 

 planis fere parallelis recte patentibus, obtusis, basalibus pinnarum inferiorum 

 reductis. Venis simplicibus, 12 — 14-jugis, pellucidis, supra parum prominulis. 

 Soris minimis, exindusiatis, paulo ultra mediam venulae partem sitis. Spor- 

 angiis paucis, 2 — 3 setis robustis instructis. 



"Hab. Brasilia, Sao Paulo, Campinas oppidum, leg. A. Heiner no. 540, 9. 9. 

 1905 (typus in Herbario Regnelliano, Stockholm). 



"Species nova distincta, a speciebus brasiliensibus adhuc dctectis abunde 

 diversa sed speciebus andinis nonnullis (D. rudi, D. Engelii) magis affinis. 

 Magnitudine, pubescentia, textura, reductione laminae D. nidi C. Chr. similis. 

 a qua specie valde recedit : sporangiis setosis, laciniis patentibus obtusis (nee 

 falcatis nee acutis), stipitibus ad basin subdense paleaceis, costis subtus 

 sparsim squamosis, pilis rachis brevioribus, pagina utraque inter venas sub- 

 glabra, aliisque notis." 



DRYOPTERIS PITTIERI C. Chr., sp. nov. 



Colombia : Paramo de Buena Vista, Huila Group, Central Cordillera, 

 upper forest zone, 3,100 meters, H. Pitticr 1200, January, 1906, type; 

 U. S. National Herbarium, No. 531395, 



Endryopteris rhizomate (?). Stipitibus (?). Lamina i m. vel 

 ultra longa, 2-2.5 dm. lata, dure coriacea, rachi rigida griseo- 

 straminea pilis brunneis crispis laxe dispositis dense hirta, bipinnati- 

 fida. Pinnis sessilibus, horizontalibus, oppositis, basi aerophoro 

 instructis, 3 cm. inter se remotis, 12-14 cm. longis infra medium 

 2.25-2.5 cm. latis, utrinque attenuatis, supra costis sparse strigosis 

 exceptis glaberrimis, infra ad costas costulasque pilis crispis brunneis 

 subdense pilosis et ad partem inferiorem costarum squamis nonnullis 

 angustis brunneis ciliatis vestitis, apice breviter caudato-acuminato 

 excepto ad alam vix i mm. latam pinnatifidis. Laciniis numerosis, 

 subpatentibus vel saepe subfalcatis, remotis (sinubus rotundis latis), 

 integris, obtusis, marginibus ubique revolutis, basalibus perparvis. 

 Venis simplicibus, ad 20 jugis, supra distinctis. Soris submedialibus, 

 brunneis, exindusiatis. Sporangiis glabris. 



The species here described as new is founded upon an imperfect 

 specimen without rhizome and stipe. Probably the leaf is narrowed 

 downwards as in D. riidis and other allied species. Although the 

 leaf very much resembles that of D. Engelii Hieron. in size, general 



