ASrLENlK.i: — ASPLENIUM. t I 



in which tlio sorus cinvps across it. Fi-riis of the most various form, 

 simple to finely dissected, growing in all situations, and all over the 

 world. As construed iierc, it includes several sections the types of some 

 of which are different enough to have been generically separated, but 

 whose characters intergrade. Tlirough § Athi/rium it is closely related 

 to Diplazium. 



1. § Neottioptcria ; frond simple, usually entire, elongate. 



2. Veins connected near margin {Thamnoptcris) (1) A. Nidus 



2. Veins as a rule free. 



3. Frond entire, more or less coriaceous. 



4. Induslum leaving a ridge at dehiscence (2) A. scolopendrioidcs 

 4. Induslum not leaving a ridge. 

 5. Stipe scaly. 



6. Frond acuminate or cau- 

 date (3) A. aquamulatum 



6. Frond merely acute (4) A. apoense 



5. Stipe naked (5) A. vittaeforme 



3. Frond serrate, membronaceous (6) A. cpiphyticum 



1. i Euasplenium ; once or more pinnate, veins forked In 

 segments, sorl confined to one side of vein. 

 2. Frond once pinnate. 



3. Pinnae deep, not narrower than oblong. 

 4. Rachls green, at least in part. 



5. Rachls pubescent (7) A. loherianum 



5. Rachls glabrous. 



6. Plnnte aurlcled, frond nar- 

 row (8) A. tappingianum 



G. No auricles, frond broad .. (9) .-1. subnorinale 



4. Rachls glossy, nearly black (10) A. normale 



3. Plnn£e usually linear-oblong or linear. 



4. At least half of lower side of pinna 



cut away (11) A. resectum 



4. Plnnse equal sided at base. 



5. Herbaceous, dark green (12) A. multilineatum 



5. Coriaceous, pale green (13) A. wightianvm 



4. Upper side of base of pinna; nearly , 



parallel with main rachls, lower side 

 obliquely truncate. 

 J 5. Veins conspicuous. 



6. Frond herbaceous, dark 

 green. 

 7. Apex of plnnse round- 

 ed (14) A. tenerum 



7. Apex of plnnse obtuse 

 or acute. 

 8. Inclso crenate 



throughout .... (15) A. lunulatum 

 8. Upper side lobed 



at base (16) A. Stcerei 



7. Apex of pinnae acu- 

 minate. 

 8. Veins usually 



simple (17) .4. prioiiurus 



8. Veins forked .... (18) A. pcrsicifolium 

 6. Frond firmer, pale green. 



7. Pinnules broad (19) A. griaeum 



7. Pinnules narrow (20) A. hirtum 



