bRYbPTERIS. § i. LASIUAEA. 



177 



(?.(?. Lower secondary segments very small. 



(16) D. vulcanica. 



7.7. j Stipes scaly or more Inely villose or pu- 

 bescent, at least on the upper side (*). 

 J. Under surface villous, the hairs not 

 rigid. (17) D. calcarata. 



!j. Under surface naked or glandular, or 

 setose with rigid hairs, 

 +• Naked or slightly glandular. 



. C 1 9 1 JL„^raP.ilflSflen s: — 



p.jS. Fully developed fronds more than 60 c.M. 

 Umg. 



1. Stipes densely hairy. Secondary seg- 

 ments with a single tooth in the sinus 

 on the anterior side. 



(20) D. monodonta. 



I J. Stipes I scaly, or the secondary segments 



without a tooth (21) D. polylricha. 



a.a. Sort nearer the margin, or terminal on the veins (^). 



^'. Sori immersed. (22) -D. immersa. 



|3'./3'. Sori superficial. 



7'. Lowest pinnae with the lowest anterior 



segment toothed or pinnatifid, the other 



segments entire. (23) D. Peekeli. 



7'.7'. All the secondary segments similar, entire 



or crenate. 



§". Surfaces naked. (24o) D. Dayi. 



^'./. Surfaces more or less villous, 

 s. Fronds + small. 



(246) D. diversifolia. 

 e'.e'. Fronds ± large. (28) D. patens. 

 2.9. Lower pinnae conspicuously reduced or dwindling down into mere 

 auricles. 

 3'. Sori medial, or lower on the veins. 



(') See also under D. hlspldnla, 0. Ktze. 

 (*} See also D. gracllescens, 0, Ktze. 



FlIJCES, 



1^ 



