152 100 
163. Dryopteris pteroidea (Kl.) C. Chr. Index 287. 1905. 
Syn. Polypodium pteroideum Klotzsch, Linnaea 20: 389. 1847; Hook. spec. fil, 
4: 255 tab. 280. 
Phegopteris pteroidea Mett. Aspid. u. Pheg. nr. 3. 1858. 
Type from Colombia, Monrrz nr. 291 and KansTEN nr. 40 (B!) 
HooxEn's figure represents very well this characteristic species, still the lower 
pinnule are generally much more reduced than shown in Hooker's plate. It varies 
mainly in size and cutting; I have seen specimens with pinnz 50 cm long and 
pinnule 5—7 cm long by 1 cm broad. The pinnule vary from being fully entire 
or faintly crenate to deeply lobed especially at the middle. Texture membranous, 
colour dark-green, surfaces (the sparsely setose costs excepied) glabrous rachis 
slender, sparsely and deciduously pilose. Veins generally once furcate bearing the 
small, exindusiate sori just within the margin; in lobed pinnule the veins are 
pinnately branched. — I have not seen rhizome and stipe; I believe that the rhi- 
zome is creeping and METTENIUS says (l.c.) that the lower pinne are abbreviated 
or abortive. 
Colombia, Karsten nr. 40, Monrrz nr. 291, Linpig nr. 157, SrüsEL nr. 478a et 687 (B), ScHLIm 
nr. 3681 (C). 
Venezuela, Funck et ScuriM nr. 491 (C). 
Ecuador, Spruce nr. 5260, SrÜüBEL nr. 894 (B). 
164. Dryopteris cochaensis n. sp. 
Syn. Dryopteris .biserialis Hieron. Hedwigia 46: 343. 1907, non C. Chr. 
Type from Colombia: Cocha, leg. SrüBEL nr. 231 (B!) 
D. pleroideae magnitudine, habitu, textura, colore valde similis, differt: rachi 
rachillisque dense setosis, pinnis supra ubique minute pubescentibus, soris fere 
medialibus. 
I think this can safely be distinguished from D. pteroidea by the characters 
pointed out above. It is certainly very closely related to the former species, very 
much resembling large forms of it. Pinnze 35—45 cm long; pinnule 4 em long 
by !'/ em broad, broadly sessile (in D. pteroidea generally subauriculate), the lower 
ones gradually reduced, central ones the largest and more or less lobed especially 
in the middle. Veins furcate or pinnate in the lobes, black and pellucid, bearing the 
round or oblong exindusiate sori just above the furcation at a considerable distance 
from the edge. 
Prof. Hieronymus identified the only specimen of this new species with 
D. biserialis (Bak.) C. Chr. BAKER’s species however is a member of the subgenus 
Clenilis and, of course, totally different from our species. This is a new instance 
of the impossibility of determining specimens with certainty after Syn. Fil. 
165. Dryopteris Ruiziana (Kl. C. Chr, comb. nov. 
Syn. Polypodium Ruizianum Klotzsch, Linnaea 20: 385. 1847. 
Type from Peru, ad Panatahua, leg. Ruiz nr. 70 (B!) 
