50 3. ALSOPHILA. 





2. Stipe or raehis seak-mtSt c-<»-«a^ ■^ 



5(c. Veins 7 — 8 on each side of the oostulae. Sori medial. 



(10) A. trichodesma. 

 >K.*. Veins i2 — i4 on each side. Sori subcostular. (1 1) A. scaberula. 

 2.S. Stipe and rachis not scabrous. 



3. Pinnulae or tertiary segments + dimorphous. 



$. Barren pinnulae slightly lobed t forlilo o n cs ' deeply pin 

 jMiifid^ i^crrSe^ fl-Onty S^Tru^ ■ (12) A. dimorpha. 

 $.§. Both barren and fertile pinnulae deeply pim t atifid bu t 



the fertile lobes much smaller thorn fho barren onoSi 



^VvionJL^ t-a^-ZM^ i/i^&Z^e^ . (15) A. Kingi. 



3.3. Pinnulae and tertiary segments uniform. 



S. Under surface densely hairy. (14) A. Wallace!. 



4E.4. Under surface naked or + scaly. 

 S. Main rachis' at best pubescent. 



■i; Lobes entire. Pitmulae not caudate. 



(15) A. modesta. 

 •{•.•{•. Lobes serrate. Pinnulae caudate. 



(16) A. caudata. 

 S.S. Main rachis pubescent and scaly. 



e. Surfaces naked. (17) A. sangirensis. 



e.e. Surfaces scaly on the costulae. 



(18) A. lepidoclada. 

 1.1. Stipes aculeate or muricate. at least at the base. \ 



2'. Main rachis smooth, rough or slightly prickly near the base. 



-3^5 — Bse eptacle w ftlvanitmlS^ 'spurious indusium at tke-mner-dde. 



3^^.-Spwrions~indusimn' wmttirg'or wnsisting~ofamitmh;orbieuliW' 

 -scale wi^ the receptacle- in fhrventre:" 

 S'. Main rachis furfuraceous, hairy or scaly, at least on the 

 upper side. 



S-. — Spunoits:^ndusium presmt. (ao)- A.-sarparaensis. 



S^^S^-Spurious-indttsium (most probably) wanting? 



€'. Main rachis furfuraceous. (21) A. fuliginosa. 

 «'.«'. Main rachis hairy and slightly scaly. 



(22) A. lepifera. 

 !:'.£:'. Main rachis naked or nearly so; spurious mdusium [pro"" 

 bably) wanting: ' 



