21 73 



tripinnatifida. Pinnis suboppositis, parum erectis, basalibus subovatis vix abbreviatis, 

 medialibus a basi ad apicem acutum attenuatis, omnibus breviter petiolatis equila- 

 teralibus, maximis ad 15 cm. longis, Pinnulis remotis, equilateralibus, inferioribus 

 liberis basi contractis, medialibus decuirentibus superioribus confluentibus, fere ad 

 costulam pinnatifidis. Laciniis oblongis integris vel ad apicem truncatum saepe 

 dentatis. Venis furcatis. Soris 1—2 in lacinia; indusiis magnis, coriaceis, hemi- 

 sphæricis, reniformibus, minute glandulosis. 



A very distinct species, well-marked by the very large, coriaceous, hemispherical 

 indusia, which perfectly conceal the sporangia. By this character it resembles D. 

 Karwinskyana, which is quite different in habit and pubescence. — Very characteristic 

 are the thick, straw-coloured, somewhat fleshy stem and rachis. 



11. Dryopteris Karwinskyana (Mett.) O. Ktze. Rev. 2; 813. 1891; 



C. Chr. Ind. 272. 



Syn: Aspidium Karivinskyanum Mett. Aspid. nr. 141. 1858. 



Lastrea mexicana Liebm. Vid. Selsk. Skr. V. 1: 272. 1849. 



A most distinct species with a finely cut, thin lamina, which throughout is 

 covered by unicellular, cylindrical, hairlike glands. The sori are hemispherical 

 and conceal the sporangia. 



Mexico: Comaltepec, Dept. Oajaca, Liebmann nr. 2.S96 (H1. 



Guatemala: Dept. Santa Rosa, Rio de los Esclavos, Heyde et Lu.\ ed. Donn. Smith nr. 4426; Mataquescuintla, 



Heyde et Lu.\ ed. Donn. Smith nr. 6405 (W). 

 Nicaragua: He d'Omotépé, Levy nr. 132 i^H). 



Unknown species of uncertain position. 



Dryopteris Wolfii Hieron. Hedwigia 4(>: 344 tab. 7 fig. 17. 19U7. 



Type from Ecuador, StObel nr. 770, 919 et 998 (B). 



By the author compared to D. marginalis, but the description and the figure 

 do not agree perfectly with the characters of Eudryopteris. 



Aspidium Huberi Christ, Hedwigia 40: 192. 1906. - 

 Type from Amazonas, Alto-Purus, Huber nr. 4514. 



Subgenus 2. StigmatOptcnS C. Chr. Bot. Tids. 39: 292. 1909 (as genus). 



In 1909 (loc. cit.) I proposed to refer to a proper genus, Stigmatopteris, a 

 number of tropical American ferns, which show several characters by which they 

 differ from species of Dryopteris : the lack of simple hairs, the serrated apex of 

 the pinnæ, the pellucido-punctate lamina and the peculiar venation, the veins 



