2^. DRYOPTERIS. § 2 NEPHRODIUM. 20S 



S. Pinnae entire or crenate. (64) D. lineata. 



O.S. Pinnae lobed. 



9. Sort + marginal. (65) D. pteroides. 



7.9. Sori not marginal. (66) D. otaria. 



S.S. Pinnae cut more than ^j^-way down to the costa. 



a. Rachis + scaly and hairy. (67) D. alatella. 



a.a. Rachis naked or + hairy, but not scaly. 



?. Sori + terminal on the veins. (o8) D. extensa. 



,S.j3. Sori + medial on the veins. 



y. Pinnae + i^^ c.M. broad, cut down nearly to the costa. 



(69) D. procurrens. 

 y.y. Pinnae 2 — 2^]^ c.M. broad, cut ^j^-way down to the costa. 



(70) D. longipes. 

 41.41. Texture + coriaceous. (71) D gongylode*. 



3.3. Lower pinnae conspicuously reduced or dwindling down into mere 

 auricles. 

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



q. Lower pinnae conspicuously dwarfed only. (*) (72) I), invisa. 



q.q. Lower pinnae reduced into mere auricles. 



r. Sori + medial on the veins; veins resinous beneath; lower 



pinnae + gradually reduced. (73) D. arida. 



r.r. Sori subterminal on the veins; under surface glandular; lower 



pinnae suddenly reduced. (74) D. cucuUata. 



p.p. Pinnae cut '/j — ^l^-vuay doom to the costa. 



if:. Fronds generally under 50 c.M. long. Under surface glandular. 



(75) D. appendiculata. 

 •^.ie.. Fully developed fronds more than 50 c.M. long. 

 •J". Sori ± terminal on the . veins. Under surface pubescent. 



(76) D. Haenkeana. 

 ^.f. Sori + medial on the veins. 



!. Stipes naked. Under surface pilose on the ribs. (77) D. eminens. 



!.!. Stipes villose. Under surface glandular. (78) D birsuta. 



p.p.p. Pinnae cut more than ^j^-way down to the costa. Surfaces naked. 



(79) D. ochtodes. 

 9.2 Rhizome short-creeping or erect. 



a. Pinnae entire, crenate, toothed or slightly lobed. 



(*) See also under 3. 



