﻿l4 1. CYATHEA. 



S:.4:. Tertiary segments + toothed. 



5. Veins 5 — 6 on each side of the costulae. 



(10) C. suluensis. 

 S.S. Veins 9 — 12 on each side. 



6. Texture papyraceous. Sori in ± 4 — 5 pairs 



to a lobe. (11) C. saccata. 



€.e. Texture coriaceous. Sori in + 8 pairs to a lobe. 



(12) C. cyclodonta. 

 3.3. Main rachis not prickly, but scaly, hairy or tomentose, at least 

 on the upper side. 



a. Texture membranaceous to papyraceous. 

 i3. Main rachis hairy or tomentose. 



y. Ultimate segments obscurely crenale, slightly scaly 

 beneath. (13) C. fusca. 



7.7. Ultimate segments serrate, naked beneath. 



(14) C. Integra. 

 |S./3. Main rachis squamose. (IS) C. assimilis. 



a.a. Texture chartaceous to coriaceous. 



|3'. Main rachis purveyed with large glands on the upper 

 side near the base of the pinnae. (16) C. Zollingeriana. 

 ]3'./3'. Main rachis without glands. 



7'. Main rachis hairy or tomentose, not scaly. 

 ^'. Sori costular. 



s'. Lobes entire or crenale, indusium 

 rupturing irregularly. 

 *. Secondary rachises hirsute above, 

 slightly scaly beneath. 



(17) C. Korthalsii. 

 *.*. Secondary rachises tomentose above. 



(18) C. crenulata. 

 s'.s'. Lobes serrate. Indusium at length 



regularly cup-shaped. (19) C. ori en talis. 

 (?'.(?'. Sori medial on the veins. 



(20) C. runensis. 

 7'.7'. Main rachis scaly, or scaly and hairy. 



S. Pinnae under 20 c.M. long; veins ± 4 — 5 

 on each side of the costulae. 



(21) C. Havilandii. 



