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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 decurrentibus 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- 
sphericis, 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; 
¢. Chr: Ind; 272: 
Syn: Aspidium Karwinskyanum 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. 2396 (H). 
Guatemala: Dept. Santa Rosa, Rio de los Esclavos, HEyDE et Lux ed. Donn. SurrH nr. 4426; Mataquescuintla, 
HEvpE et Lux ed. Donn. SurrH nr. 6405 (W). 
Nicaragua: Ile d'Omotépé, Lévy nr. 132 (H). 
Unknown species of uncertain position. 
Dryopteris Wolfii Hieron. Hedwigia 46: 344 tab. 7 fig. 17. 1907. 
Type from Ecuador, SrüsEL 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 45: 192. 1906. 
Type from Amazonas, Alto-Purus, Huser nr. 4514. 
Subgenus 2. Stigmatopteris C. Chr. Bot. Tids. 29: 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 pinne, the pellucido-punctate lamina and the peculiar venation, the veins 
