Bo. DIPIAZIUM. ^ 1. EDDItLAZltM. 39^ 



a.a.a.a. Fronds copiously 2-pinnate to 3-pinmtifid (*). 

 b. Pinnulae lobed at best ^j^-way down to the casta. 

 c. Rachis naked or glabrescent. 



d. Fronds herbaceous or membranaceous. 



+. Lobes sharply toothed. (36a) D. cyatheifolium. 



+.+. Lobes obscurely denticulate. (oGb) D. davaoense. 



<I.<I. Fronds papyraceous to coriaceous. 



e. Stipes smooth. (37a) D. latifolium. 



e.e. Stipes at length sparingly muricate (576) D. dolichosorum. 

 C.C. Rachis tomentose or scaly. 



X. Pinnulae entire to serrate; main rachis scaly. 



(38) D. manilense. 

 x.x. Pinnulae broadly and shallowly ' lobed, or the main rachis 

 \notjGa ly. _ (39) D. vestitum. 



h.h. Pinnulae pinnatifid at least ^j^-way down to the costa. 



1. Fully developed fronds under 50 c.M. long. (40) D. deltoideum. 

 1.1. Fully developed fronds more than 50 c.M. long. 

 3. Main rachis smooth, unarmed. 



3. Sari reaching nearly to the edge. 



+. Texture ihinlu-reeriaeeom^. (41a) D. Meyenianum. 

 +.+. Texture nemply -woody. (^l'') D. atratum. 



3.3. Sori not reaching nearly to the edge. 

 A. Rachises not ebeneous. 



5. Pinnao 30 — 45 c . M , long ; pinnulae + ^'/j — ^Vs 

 C.M. broad. (42) D. amplissimum. 

 S.S. Pi nna o 2 30 c . M. kng-} pinnulae' + i — 2 

 C.M. broad. 



e. Pinnae paucijugate. (43a) D. oligosorum. 

 ©.©. Pinnae multijugate. 



(436) D. polypodioides. 

 1,1:. Rachises ebeneous. (44) D. ebeneum. 



S.S. Main rachis + asperous, muricaie or aculeate. 

 f . Costae and costulae not paleaceo-asperous. 



+. Ultimate lobes + rounded. (45a) D. asperum. 



+.+. Ultimate lobes truncate. (456) D. fructuosum. 



(*) See also D. crlnltam, C. Chr. 



