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 indusium. — The 
Guiana-specimens differ from the type from Trinidad by more numerous pinne, 
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 
Stigmatopteris. 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 it does not differ materially from Stigmatopteris, and I 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. 2a. 
Syn. Polypodium Sancli-Gabrieli Hook. spec. fil. 4: 233, 1862. 
Nephrodium Sancti-Gabrieli Bak. Flor. bras. 1?: 469, 1870. 
Aspidium Imrayanum Fée, Cr. vasc. Brés. 1: 133, 1869. 
Type from Amazonas, Sao Gabriel, Spruce nr. 2153 (Kew !). 
Venezuela, Merida, ExcEL nr. 231 (B). 
Trinidad, FENDLER nr. 97 (W). 


Fig. 2. a. D. sancti-gabrieli (Hook.) O. Ktze. Basal part of sterile and fertile pinna 
and apex of a pinna, >< *|l;. — b. Pinna of D. subobliquata (Hook.) O. Ktze., »« *|;, and two segments 
>< le. — c. Middle part and apex of a pinna of D. varians (Fée) O. Ktze., showing venation, 
about nat. size. 
