80 



28 



cepted) to deeply and irregularly pinnatifid. The variations are often to be found 

 in the same leaf. — Lamina with a subdistinct terminal pinna, herbaceous-mem- 

 branous, perfectly glabrous and naked, dark-green. Veins 3 — 4 to a side, anasto- 

 mosing about as in certain species of Goniopteris. Sori small, furnished with a 

 deciduous, membranous, glabrous, reddish, wrinkled, peltate indusiuni. — The 

 Guiana-specimens differ from the type from Trinidad by more numerous pinnæ, 

 which have a longer petiole and are more equally cuneate at the base on both sides. 

 D. varians is in some characters, f. inst. the wide-creeping rhizome and per- 

 haps in the lack of immersed glands, rather different from the general .type of 

 Stigmalopteris. In the Trinidad-specimens I have not found immersed glands, while 

 they are seen indistinctly in the specimens from Essequebo. As to other charac- 

 ters il does not differ materially from Stigmalopteris, and 1 think it best to place 

 the species here. From all other groups of Dryopteris it is widely different. 



27. Dryopteris sancti-gabrieli (Hook) O. Ktze. Rev. 2: 813, 1891; 

 C. Chr. Index 290. — Fig. 2 a. 

 Syn. Polypodiiim Sancli-Gabrieli Hook. spec. fil. 4: 233, 1862. 



Nephrodium Sancti-Gabrieli Bak. Flor. bras. 1^: 469, 1870. 

 Aspidium Imrayanum Fée, Cr. vase. Brés. 1: 133, 1869. 

 Type from Amazonas, Sâo Gabriel, Spruce nr. 2153 (Kew!). 



Venezuela, Mérida, Engel nr. 231 (B). 

 Trinidad, Fendleh nr. 97 (W). 



Fig. 2. a. O. sancti-gabrieli (Hook.) O. Ktze. Hasal part of sterile and fertile pinna 



and apex of a pinna, X •'(t.. — b. Pinna of D. subobliquala (Hook.) O. Ktze., X *\s., and two segments 



X t'I'i. — c. Middle part and apex of a pinna of D. varians (Feel O. Ktze., showing venation, 



about nat. size. 



