83 135 



75. Dryopteris Rimbachii Ros. Fedde, Repert. 7: 147. 1909. 



Type from Ecuador, Mt. Tunguragua, 2500 m, leg. Rimbach nr. 119 (R! CC). 



Well-marked by ils coriaceous lamina and long basal scales; the leaf is very 

 shortly narrowed towards the base and bears 2—3 pairs of close, auriculiform 

 pinnæ. In general habit it resembles closely D. Pavoniana, specimens of which 

 were collected at the same locality by Dr. Rimbach (nr. 118, R, CC), but that spe- 

 cies has a long-creeping, branched rhizome and wants the long basal scales and 

 auriculiform pinnæ. 



76. Dryopteris brachypus (Sod.) C. Chr. comb. nov. 



Syn. Nephrodium brachypus Sod. Rec. 43. 1883; Cr. vase. quit. 228. 1893. 



Type from Ecuador, ad viam Quito-Guayaquil, leg. Sodiro (specim. auth. 

 in Kew!). 



Rhizome erect, up to 15 cm long, 1cm thick, like the base of stipe densely 

 clothed with narrow, subulate, brown, firm, finely hairy, squarrose scales; similar 

 scales are scattered along the stipe and rachis, but Ihey are deciduous and not al- 

 ways found. Stipites fasciculated, about 10 cm long, finely hairy. Lamina 40 — 70 cm 

 long, 10 — 15 cm broad, downwards gradually but rather shortly attenuate, firmly 

 membranous, not glossy above, pale-green beneath, the upperside finely pubescent 

 by adpressed hairs, the channelled costæ more decidedly slrigose, the underside 

 nearly glabrous; rachis sulcate and hairy above. Middle pinnæ 6 — 9 cm long, 

 Vk—Vli cm broad, shorth' acuminate, the lower ones gradually shortened, the 

 lowermost auriculiform, about 1 cm long. Segments a little oblique, acute, larger 

 ones often faintly toothed, the basal ones equal. Veins 5 — 7-jugale, simple, rather 

 indistinct. Sori close to the margin with glabrous sporangia; indusium not seen; 

 according to Sodiro it is puberulous. 



D. brachypus is in general habit not unlike D. oligocarpa; it is best character- 

 ized by its numerous basal, squarrose scales, agreeing in this character with the 

 two following species; these three species (and perhaps D. Rimbachii) form a 

 proper little group marked by the said character. 



77. Dryopteris supranitens Christ, Fedde, Repert. S: 19. 1910. 



Type from Costa Rica, Tablazo, Finca Haberl, A. et C. Brade nr. 270 (R!); 

 specimens from Panama, Chiriqui, Ma.xon nr. 5244 (W) are very alike. 



Closely related to tablaziensis with similar basal scales; it differs by its rigid 

 texture, glossy upperside, narrower lamina that is suddenly narrowed downwards 

 with 4 — 5 pairs of distant glanduliform pinnæ (type IV), by its sparse pubescence 

 and long-acuminated pinnæ. From Ü. brachypus it differs in shape of lamina and 

 nearly glabrous upperside. — A peculiar form with the segments distinctly ser- 

 rated is Maxon's nr. 5524 from Panama (W). 



18' 



