206 22. DRYOPTERIS. § 2. NEPHRODIUM. 



h. Lower pinnae slightly, if at all, reduced, not dwindling down into 

 mere auricles ('); the fronds occasionally with a single pair of 

 dwarfed or reduced pinnae at the base. 

 c. Frotids under 30 c.M. long. Under surface glandular to I 

 fiairy. (80) D. pilosiuscula. 



c.c. Fully developed fronds more than 30 c.M. long^ if shorter, then nakei 

 d. Fronds rather dimorphous; fertile pinnae distinctly nairower than 

 the barren ones. Undm nv m f^ec short hairy tmd glandular. 



(8i) D. glandulosa. 

 d.d. Fronds not dimorphous. 



e. Sort contiguous, forming transverse bands of brown lines close 

 to the main veins. (82) D. cyatheoides. 



e.e. Sort not contiguous, rather distant from the main veins. 

 f. Veins to 14 on each side of the main veins. 



(83) D. urophylla. 

 f.f. Veins 15 — SO on each side of the main veins. 



(84) D. moulmeinensis. 

 b.b. Lower pinnae conspicuously reduced or dwindling down into mere 

 auricles. 

 c'. Surfaces naked or glabrescent. i 



d\ Veins 2 — 5 on each side of the main veitis. (85) D. latipinna. 

 d.d'. Veins 6 — 8 on each side of the main veins. (86) D. aborliva. 

 c'.c'. Under surface + hairy, at least on the veins. 



§. Lower pinnae suddenly reduced. (87) D. megaphylla" 



$.$. Lower pinnae gradually reduced. 

 •{■. The 1 — 8 lower veins anastomosing. 



* Pinnae blunt or bluntish. (88) D. arbuscula. 



** Pinnae acute or acuminate. (89) D.' amboinensis. 

 •J-.f. The 5 — 6 lower veitis anastomosing. (9(') D. multilineata. 

 «.«!. Pinnae cut from */^ — "^U-way down to the costa. 

 h'. Texture ± coriaceous. 



c: Lower pinnae slightly, if at all, reduced; the fronds occasionally 



with a single pair of dwarfed or reduced pinnae at the base (/*). 



d'. Stipe and rachis purveyed with large, distant glands, those of 



tlie rachis placed on the under side at the base of the pinnae. 



(91) D. callosa. 



(') See also D. lineata, C. Chr. 



(') See also D. crassllolia k echlnata, 0. Ktze. 



