274 28 



Francisco, Galander (HB).— Cordillera de la Rioja, Hieronj'miis & Niederlein n. 342 

 (HB).— Sierra Achala, Galander (HB). — Sierra Famatina, Hieronymus & Nicderlein 

 n. 587 (HB). — Asochinga, Lorentz n. 3 (HB). — Estancia S. Teodoro, T. Stuckert 

 n. 2168 (HC). - Tucuman, T. Stuckert n. 8152 (HC). 



Peru: Lima, Dr. Meyen (HB).— Callao, F. Didrichsen n. 4396 (HH). 



Chile: Valparaiso, F. Didrichsen n. 3308 (HH); Lindberg (HS); Bridges (HS); 

 Bertero, Gay, Besser, Gaudichaud, Pöppig n. 263, Philippi n. 1092 (HB). — Paihuano, 

 Philippi (HC). - Colehagua, Philippi (HC). — Santiago, Philippi (HB). 



I consider this species to be a southern subspecies of D. oligocarpa, re.sembling 

 it in size, habit and texture. It differs mainly by the following characters: Rhizome 

 and the base of stipe destitute of scales or the stipe below furnished with some 

 few thin, not hairy scales. Stipe short, stramineous, towards its base blackish. 

 At first the lamina is sparingly hairy along rachis, costæ and veins, not densely 

 pilose. The hairs are mostly solitarily placed and very deciduous, so that older 

 plants may be quite glabrous. There are 4—6 pair of gradually reduced pinnæ, 

 the lowermost very small and near the base of the stem. The underside is in 

 some specimens densely glandulose, in others without glands. Veins 8 — 10, in some 

 specimens occasionally furcate in the larger segments. Indusium small with a few 

 long hairs and sparingly glandulose. 



The specimens from Argentina do not agree exactly with the Chilene ones, 

 being thinner in texture and more generally without glands on the under surface. 

 The Chilene form is '^ conter minum" of several authors as to the locality of Chili, 

 and it is probably the same as Polijpodium riifjnm Poir. Enc. méth. 5: 532. 1804, 

 of which species 1 have seen no authentic specimen; it is therefore best to place 

 the species of Poiret among the species ignotae for further study. 



5. Dryopteris oligocai-pa (H. B.Willd.) O. Ktze. Rev. Gen. PI. 3-: 378. 1898 - [Fig. 5]. 



Syn.: Pohjpodhim oligocarpum Humb. & Bonpl.; Willd. sp. 5: 201. 1810; 

 Aspidiiim oligocarpum H. B. K. Nov. Gen. et Sp. 1: 13. 1815; Nephrodiiim oligocarpum 

 Desv. Mém. Soc. Linn. Paris 6: 256. 1827; Lastrea oligocarpa Moore, lud. 86. 1858. — 

 Pohjpodium oligosoriim Kl. Linnaea 20: 387. 1847. — Polypodiiim consangiiineiim 

 Klotzsch, I.e. — Aspidiiim lasiesthes Kze. Linnaea 23: 300. 1850. 



Type from Venezuela: Cumana, leg. Humboldt, Herb. Willd. n. 19699 

 (part.) (HB!). 



Under this name I unite a number of forms, which in general can easily be 

 distinguished from allied species but are very difficult to characterize as good 

 varieties or subspecies. It is probable that the Brazilian forms represent one or two 

 good species different from the typical form from \'cnezuela-Mexico, but it has not 

 been possible for me to find even one constant character, by which they can be 

 separated from the type, although as a rule they have a somewhat different habit. 

 The more southern forms from Chili and Argentina are more different, and I have 

 considered it proper like Hieronymus to separate them out as a species: D. argen- 



