128 76 



7. Rachises and costæ glabrous or sparsely setose. 



8. Brazilian species 162. D. Glaziouii (Christ) C. Chr. 



8. Andine species. Sori close to the edge 



163. D. pteroidea (Kl.) C. Chr. 

 7. Rachises and costæ villous. Sori about medial 



164. I), cochaensis n. sp. 

 3. Basal segments, at least the lower one, not reduced and auricled 



at the inner side. Hairs long, pluricellular 170. Ü. multiformis n. sp. 



54. Dryopteris pusilla (Mett.) O. Ktze. Rev. Gen. PI. 3: 813. 1891; C. Chr. 



Ind. 287. — Fig. 12 a. 



Syn. Aspidinm piisillnm Mett. Ann. sc. nal. V. 3: 245. 1864. 



Type from Colombia, Fusagasuga, 1900 m, leg. Lindig nr. 92 (B!), Bogota, 

 Stübel nr. 413 part, et 427 (B). 

 Peru, St. Gavan, Lechi.eh nr. 2242 (B); Sacliapeta, Lechler nr. '-'6in (B). 



A species of doubtful position, not nearly related to any other. It is possible 

 that it belongs to ,iÇ Cijclosorus, which the very hairy, persistent indusia seem to 

 indicate, still I place it here provisionally. The lamina is narrowed downwards 

 gradually and the stipe is very short, but the lowermost pinnæ are not so small 

 as could be expected in a species belonging to the group of D. opposita. 



55. Dryopteris brachypoda (Bak.) C. Chr. Ind. 255. 1905. — Fig. 12b. 



Syn. Nephrodium brachypodiim Bak. Timehri 5: 213. 1886; Trans. Linn. Soc. 

 II. Bot. 3: 290. 1887; Jenman, W. Ind. and Guiana Ferns 207. 



Type from British Guiana, upper slope of Mt. Roraima, im Thurn nr. 275 

 (Kew !). 



A small species in general habit very much resembling D. sagittata, but a 

 true Lastren intermediate between D. pusilla and D. coarctata. 



Rhizome erect, sparsely scaly. Leaves densely fasciculate, practically without 

 stipe, lanceolate, 15 cm long, 2^2 cm broad at the middle, narrowed very gradually 

 towards the base through several pairs of dwindling pinnæ, firmly membranous, 

 dark-green; rachis strigose, especially on the sides, glabrous in the furrow above, 

 and clothed with many small, brown scales. Pinnæ sessile, alternate, horizontal, 

 the largest Vis cm long, 5 — 6 mm broad, obtuse, auricled on both sides of the 

 base, slightly pilose on the costæ and main veins beneath, underside finely glan- 

 dulose, the upper and lower ones entire, the middle and largest ones crenate or 

 lobed one third of the way to the midrib, margins somewhat revolute. Secondary 

 veins forked in the entire pinnæ, in the lobed pinnæ with 2—3 tertiary simple 

 veins. Sori supramedial, furnished with rather large, persistent, at least red-brown, 

 subglabrous indusia. Sporangia glabrous. 



