﻿22. DRYOPTERIS. § 2 NEPHRODIUM. 205 



€. Pinnae entire or crenale. (64) D. lineata. 



€.G. Pinnae lobed. 



7. Sori + marginal. . (65) D. pteroides. 



7.7. Sori not marginal. (66) D. olaria. 



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



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



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



/3. Sori + terminal on the veins. (08) D. exlensa. 



|3./3. Sori + medial on the veins. 



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



(69) D. procurrens. 

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



(70) D. longipes. 

 41.41. Texture + coriaceous. (71) D gongylodes. 



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 '/s — ^l-i.'^^'^V down to the costa. 



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



(75) D. appendiculata. 

 if. if^. Fully developed fronds more than 50 c.M. long. 



•^. Sori + terminal on the veins. Under surface pubescent. 



(76) D. Haenkeana. 

 •J-.-I*. Sori + medial on the veins. 



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



.'..'. Stipes villose. Under surface glandular. (78) D hirsuta. 



P'p'P' Pinnae cut more than ^\^-way down to the casta. Surfaces naked. 



(79) D. ochtodes. 

 2.2 Rhizome short-creeping or erect. 



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



(*) See also under 3. 



