﻿22. DRYOPTERIS. § 2. NEPHRODIUiVI. 207 



d'.d'. Siipe and rachis wilhoul glands. 



e'. Stipes naked. 



f. Veins + 7 on each side of the main veins. (92) D. laevis. 

 f'.f. Veins iO — i5 on each side of the main veins. 



(93) D. brachyodus. 



e'.c'. Stipes hairy or bristly. (94) D. ferox. 



c',c'. Lower pinnae conspicuously reduced or dwindling down into 



mere auricles. 



$. Sori suhmarginal. (95) D. Loheriana. 



§.$. Sori + medial. 



if.. Costae with a large gland at the base beneath. 



(96) D. lalebrosa. 

 if. if. Costae without gland, at the base beneath. 



•J>. Reduced pinnae few, distant. Surfaces rather naked. 



(91) D. piloso-squamata. 

 •$•••{•. Reduced pinnae numerous, close. Surfaces conspicuously 

 hairy. (98j D. sagitlifolia. 



h'.h'. Texture herbaceous to firm-papyraceous. 



OL. Lower pinnae hardly, if at all, reduced; the fronds occasionally j 

 with a single pair of dwarfed or reduced pinnae at the base. 

 /3. Pinnae cut less than ± ^j^-way doivn to the costa. 

 y. Sori medial on the veins. 



S. Surfaces naked. (99) D. caudiculata. 



S.S. Surfaces hairy, at least on the ribs beneath. 



£. Lowest pinnae sharply de flexed. (100) D. similliraa. 



e.s. Lowest pinnae not sharply deflexed. 



•J-. Lowest i — 2 pairs of veins anastomosing. 



if. Pinnae cut '/^ — ^j^-way down to the costa. The 



2 lower veins anastomosing . (101) D. pseudoreptans. 



if.if.. Pinnae cut + ^j^-way down to the costa. Only 



the lowest veins anastomosing. (102) D. parasitica. 



•^''^. Lower 5 — 8 pairs of veins anastomosing. 



(103) D. indica. 

 7.7. Sori near the main veins. Upper surface + hairy, the under 

 one + glandular. (104) D. sakayensis. 



^.|3. Pinnae cut more than + *j^-way down to the costa. (*) 



i 



(*) See also D. parasitica, 0. Ktse. 



