390 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 52 



close relationship existing between the fern-floras of Jamaica and 

 the Andes. 



I have only to add to the descriptions of Jenman and Hieronymus 

 that the lamina narrows downwards very abruptly, as in D. rudis, 

 with a few pairs of glanduliform warts, and that the stem is clothed 

 throughout with thin, light brown scales. The species resembles in 

 habit not a little D. ptcrifolia, but it is inter alia very distinct by 

 its densely glandular under side and thin texture, and by its midribs 

 and costules of the pinnje being clothed beneath with short, crisped, 

 stellate hairs. 



Jamaica: Near Vinegar Hill, 4,000 ft., Harris 7446; moist shaded bank, 

 Maxon 1520. Vicinity of New Haven Gap, 1,650 meters, humid forest 

 slope, Maxon 2693. At the base of Blue Mountain Peak, 6,000 ft., 

 shaded edge of trail, Maxon 1442 (= Underzvood 2465) ; Maxon 

 1442a. 



DRYOPTERIS LIMBATA (Sw.) Kuntze 



(Revision 323, No. /L.) 



St. KiTTs : Belmont Estate, forest ravine, Britton and Cozcell 397. Slopes 

 of Mt. Misery, Britton and Cozvcll 560. 



By its toothed segments, with the sori in the teeth, different from 

 all allied species. 



DRYOPTERIS SCALARIS (Christ) C. Chr. 

 (Revision 323, No. 72, Fig. 47.) 



Gu.vtemala: Vicinity of Secanquim, Alta Verapaz, 500 meter?, partially 



shaded bank, Maxon and Hay 3193. 

 Costa Rica : Vicinity of Santiago, on partially cleared slope, Maxon 122. 



Forets de Tuis, 650 meters, Tondnz 11332. Waldeck, pres ]\Iadre de 



Dios, 50 meters, Pittier 10260 (in my "Revision"' referred to D. 



Mcrcurii, but probably belonging here). 



DRYOPTERIS RUSBYI C. Chr., sp. nov. 



Bolivia: Near Yungas, 4,000 ft., H. H. Ritsby 429, type; U. S. National 

 Herbarium, No. 828981. 



Eudryoptcris rhizomate lignoso, obliquo vel breviter repente. 

 Stipitibus 0.5-1 cm. inter se remotis, ad pinnas infimas abortivas 

 10-15 cm. longis, rigidis, sulcatis, basi squamis paucis praeditis, 

 griseo-stramineis, ubiquc brevissime puberulis. Lamina 6 dm. vel 

 ultra longa, 12-20 cm. lata, lanceolata, versus basin abrupte attenuata, 

 membranacea, bipinnatifida. Rachi grisea, dense et minute puberula. 

 Pinnis oppositis, horizontalibus, sessilibus, majoribus aerophoro 

 praeditis, infimis 5-6 jugis valde rcductis, glanduliformibus, pinnis 



