21 
structis vel fere glabris, ad alam 1 mm latam pinnatifidis. Laciniis c. 1 cm longis, 
2—3 mm latis, obtusis vel subacutis, parum obliquis, versus basin latioribus, sinu- 
bus acutis latisque separatis, marginibus regulariter dentatis vel crenatis; laeiniis 
basalibus ceteris similibus vel paullo brevioribus. Venis indivisis, distinctis, distan- 
tibus, c. 6 utroque latere, in dentes excurrentibus. Soris parvis, supramedialibus, 
exindusiatis; sporangiis paucis, mox deciduis, glabris. 
Related to D. supranitens Christ and D. tablaziensis Christ, both from Costa 
Rica, resembling them in the presence of numerous scales on the stipe below, a 
character rather rare within the subgenus Lastrea. From the former it differs in 
its non-glossy upper surface and its patent and toothed segments; from the latter 
in its shorter pinnz, nearly glabrous rachis, and toothed segments. A pronounced 
character is found in the broad bases of the segments. The veins are remarkably 
distant and less oblique than in most other species. 
33. D. hydrophila (Fée) C. Chr. — Also Martinique, Pére Duss nr.1583 (B). 
38. Dryopteris retusa (Sw.) C. Chr. Ind. 288. 1905. 
Syn. Polypodium retusum Sw., P. pusbescens Raddi, Aspidium Kaulfussit Link 
(see Vid. Selsk. Skr. VII. 4: 276); Dryopteris Raddii Ros. Hedwigia 56: 367. 1915 
I think now that the numerous South Brazilian forms, which in my first 
paper (I. c.) I referred to D. oligocarpa, may very naturally be separated from that 
species under the name of D. retusa; the name D. Raddii Ros. for P. pubescens Raddi 
seems superfluous. 
39. Dryopteris ptarmiciformis C. Chr. et. Ros. Fedde Repert. 12: 472. 1913. 
Type from Bolivia: North-Yungas, Polo-Polo near Coroico, O. BUCHTIEN 
nr. 3545 (? an 3435) (R)). 
Lastrea rhizomate erecto, paleis lanceolatis, ferrugineo-brunneis, margine pilo- 
sulis vestito. Stipitibus dense fasciculatis, basi nigrescente, paleacea excepta stra- 
mineis, nudis, in sulco hirtis, ceterum pilis paucis brevibus vestitis vel glabrescentibus 
usque ad pinnas normales ca. 12 cm longis, 1 1’/s mm crassis. Laminis deorsum 
obsoletis, pinnis inferioribus 3—4-jugis ad meras auriculas reductis vel glanduli- 
formibus, sursum elongato-ovalibus, acuminatis, herbaceis, laete viridibus, in facie 
superiore pilis albidis subulatis prope marginem adspersis, utrinque obscure albido- 
glandulosis vel furfuraceis, c. 20 cm longis, 10 cm latis, pinnato- -pinnatifidis. Pinnis 
(non reductis) c. 12-jugis, brevissime petiolatis, iis inferiorum 1—2-jugum plerum- 
que reflexis, ceteris erecto-patentibus, strictis, medialibus maximis c. 6 cm longis, 
vix 11/2 em latis, e basi subaequali lineari- lanceolatis, breviter acuminatis, usque 
fere ad costam inciso-lobatis; inferioribus parum abbreviatis, infimis — transitum 
ad pinnas auriculiformes formantibus — ad 1 cm longitudinis repente reductis ; 
superioribus gradatim diminutis, in lobos apicis demum serrati vel subintegri sensim 
