252 UnpeRWoop: AMERICAN FERNS 
Scales of axillary buds pallid ; 
cales of ultimate rachises 
uniformly pale. 14. D. palmata. 
Primary internode naked on the outside, at least 
elow. 
Pinnae narrow, 2 cm, or less wide. 
Under surface thickly set with short erect 
reddish clavate bodies giving a ote 
appearance ; primary internodes 2 c 
or less long. 6. D. farinosa. 
Under surface smooth or glaucous-mealy, 
pale; primary internodes longer, 4-5 
em. long. 18. D. strictissima. 
Pinnae wider, 2.5-6 cm. 
Under sitar slightly pubescent ; ulti- 
mate rachises densely scaly. g. D. furcata. 
Under surfaces tomentose; ultimate 
rachises tomentose at first, becoming 
smooth, 8. D, fulva. 
eit internode (if any) fally pectinate; seg- 
ontiguous ; primary axis prominent, pro- 
ROLY (apparently) lateral branches. 10. D. intermedia. 
List OF THE NORTH AMERICAN SPECIES 
1. Dicranopteris Bancroftii (Hook.). 
Gleichenia Bancroftiti Hook. Sp. Fil. 1: 5. #7. g A. 1844. 
TYPE LOCALITY: Jamaica, Bancroft. 
DistRIBUTION: Mountains of Jamaica at altitudes of about 
1200-1500 meters; also in Costa Rica, Colombia, Venezuela, 
Ecuador, and Bolivia. 
Icon: Hooker, loc. cit. 
This species was properly distinguished from the Old World 
representatives of the /ongissima group by Hooker, and this just 
opinion was abandoned when he cast all rational ideas of geographic 
distribution aside, and as well all rational conceptions of species 
limitations. The species isa most graceful plant in spite of its 
large size; it often forms sprays four or five meters long overhang- 
ing dry banks. Its allies are discussed in the footnote on page 249: 
2. Dicranopteris bicolor (Christ). 
Gleichenia bicolor Christ, Bull. Herb. Boiss. II. 6: 279. 1906. 
Tyre LocaLity: Valle del Rio Navarro, Costa Rica, Werchle. 
Distripution: Known only from the mountains of Costa Rica, 
alt. about 1400 meters. 
ie eaten iaieiacaneniel 
