286 40 



I lliiiik llie nearest species is D. oliyocarpa (Pol. retusiim Sw.), whicii dilTers in 

 liiizome and has fewer reduced pinnæ. 



21. Dryopteris caucaensis (Hier.) C. Clir. Ind. 257. 1905. 



Syn. Nephrndinm caiicaense Hieron. \in<J,\. .lalirl). .'54: 444. 1904. — Aspidiiim 

 frigidiim Chrisl, Bull. L'Herb. Boiss. II. 6: 60. 1906. 



Type from Colnmbia: Cauca , leg. Lehmann n. 3102 (HB!). Also leg. 

 Schmidtchen (HB). — Costa Rica: Le haut de volcan Turrialba, C. Werkle (HC) 

 ^ A. frifjidiim Christ. 



A very distinct andine species, characterized by its coriaceous texture, its 

 broad (4 mm.) segments and by its densely hirsute rachis, which is throughout 

 sparsely clothed with small acute, brown scales. Sori about medial. A. frigiihim 

 Chrisl agrees exactly with the type. 



22. Dryopteris velata (Kze.) O. Ktze. Rev. Gen. PI. 2: 814. 1891. 



Syn. Aspidium velatiim Kunze; Melt. Pheg. und Aspid. 79 n. 190. 1858; 

 Nephrodium velatum Hk. sp. fil. 4; 101 tab. 247. 1862. 



Type from Cuba, leg. Linden n. 1901 (HB. HC!). 



A very peculiar species with no near alliance to the other species of the group. 

 Rhizome, rachis and costæ beneath are densely covered with large, tliin, glandulose, 

 reddish yellow scales. Under surface and indusium linely and densely glandulose. 



23. Dryopteris aspidioides (Willd.) C. Chr. Index 253. 1905. 



Syn. Ceterach aspidioides Willd. s]). 5: 137. 1810; Phegopteris aspidioides Melt. 

 Fil. Hort. Lips. 82 tab. 18 fig. 1—4. 1856. 



Type from Venezuela: Caracas, leg. Brcdemeyer, hb. Willd. n. 19581 (HB!). 



Specimens examined: 



Venezuela: Caracas, Gollmer, Moritz n. 36, Dr. Kosas, Lansherg, Büschel 

 (HB). — Col. Tovar, Karsten, Gollmer (HB). 



This species very well figured by Mettenius and incorrectly united with Ibe 

 next species by Hooker and Baker is intermediate between D. diplazioides and D. 

 ptarmica, differing from the former by its smaller size and by its short-stalked 

 pinnæ, from the latter by its subtruncate and broader (1 cm.) pinnæ and by its 

 only very sparingly squamose stem. Lamina sparsely pubescent throughout, the 

 lower one or two pair of pinnæ somewhat reduced, the upper ones 4—5 cm. long, 

 broadest at the base, in fully developed leaves incised about midway to the cosla 

 into obtuse or sometimes retuse, rather oblique lobes; veins 3 — 4 to a side, the 

 lower ones running out from the midrib of the lobe about 1 mm. above its base; 

 the anterior basal vein reaches the margin in sinus, the posterior one a little above. 

 Sori placed a little above the middle of the vein, 1 mm. long. Mettenius describes 

 the sporangia as setose; in the majority of the specimens examined the sporangia 



