81 327 



and covering the sori, by its lower basal segment not being longer than the others, 

 and by its medial sori. 



Another specimen from Costa Rica, leg. H. Pittier n. 1935 (HC), described 

 by Christ in Bull. Soc. bot. Belg. 35: 213.1896 as Aspidium resino-foetidum is either 

 a variety of D. nervosa or a new closely allied species. Its leaf is very coriaceous, 

 nearly glabrous and eglandulose; in habit it mostly resembles 0. cheilanthoides, in 

 the position of its sori D. nervosa. 



76. Dryopteris strigifera Hieron. Hedwigia 46: 337. tab. 5 fig. 10. 1907. 

 Type from Columbia: Llanos de San Martin, leg. Stübel n. 711 (HB!). 



77. Dryopteris Brausei Hieron. Hedwigia 46: 337. tab. 6 fig. 11. 1907. 

 Type from Columbia: in valle lluminis Rio Paez, leg. Stübel n. 145 (HB!). 



78. Dryopteris pterifolia (Mett.) O. Ktze. Rev. Gen. PI. 2: 813. 1891; Hieron. 

 Hedwigia 46: 338. 1907 — [Fig. 49]. 



Syn. Aspidium pterifolium Melt.; Kuhn, Linnaea 36: 110. 1869; Nephrodium 

 pterifolinm Bak. Syn. Fil. 497. 1874. Nephrodium retrorsum Sodiro, Recensio 51. 

 1883; Crypt, vase. quit. 244. 1893; Dryopteris retrorsa C. Chr. Index 288. 1905. 



Type from Bolivia: leg. Mandon n. 15 (HB!). 



I refer here the following specimens: 



Venezuela, Tovar, Moritz n. 403 (HB). 



Ecuador: Andes quitensis, Sodiro (HB). 



Near D. rudis, but different in pubescence and very characteristic by its habit. 

 Leaf 1 — Vi-i m. long; stem more than 1 cm. thick at base with several dull scales. 

 The lowest 3 — 4 pair of pinnæ very small, glanduliform (Type IV), the developed 

 ones at distances of 6 cm., the largest up to 3 dem. long by 4 cm. broad; the 

 pairs below the middle of the lamina opposite, pendent about from the middle, 

 the upper ones alternate and patent. Rachis, costæ and veins rather densely hairy 

 with long, soft hairs (not setose as in D. rudis). Large tuberculiform aërophore. 

 Segments linear, obtuse, with nearly their own breadth between, the basal pair of 

 the lower pinnæ much reduced. 15—18 pair of veins. Sori near the margin and 

 sometimes nearly covered by the somewhat revolute margin. 



N. retrorsum Sod. is this species. Sodiro says: 'Rachibus subtetragonis rachil- 

 lisque primum squamulis elongatis, angustis, ochraceis, mature deciduis conspersis"; 

 such scales I have not seen; they have probably fallen in the specimens seen; 

 further he says: "involucro subdiscoideo, basi retuso, caducissimo", while Mettenius 

 in his diagnosis says: "indusium manifestum, membranaceum, tenerum setis elon- 

 gatis hamatis instructum". I have failed to find an indusium. 



Nephrodium piloso-hispidum Hk. sp. 4: 105. 1862, by Baker united with D. 

 rudis, may be this species (see Hieronymus, Hedwigia 46: 339); if so, the name has 

 priority. Further Hieronymus is of opinion (1. c. 338) that Alsophila pilosa Mart. & 



U. K. 1). Vidensli.Selsk. Skr., 7. H.-ekUe. niiturvidensk. 0(J nialhem. Afcl. IV. 4. 43 



