1. CYATHEA. i5 



I 



i $.$. Veins +" 7 — 40 on each side of the cos- 



lulae. _______^__ 



♦ Indusium at length shallowly 

 saucer-shaped^ often entire. 



(22) C. javanica. 

 ♦» Indusium evanishing or breaking 

 down irregularly^ 

 f . Sort costular. (23) C. sumatrana. 

 •{•.•{•. Sori rather medial. 



(24) C. inquinans. 

 3.3.3. Main rachis + prickly.] at least towards the base. 



A. Upper surface whitish when dry. (25) C. leucophaes. 

 4.<f. Upper surface not whitish when dry. 



S. Sori distant from the cosiulae. (26) C. strigosa. 



S.S. Sori costular. \ (See also G. orientalis). 



e. Rmhimt iammitoeo aim wO Pinnulae 6 — 7^1^ c.M. 



long. Smd-fem-4»-a-4obe. (27) C. hymenodes. 



e.e. ■ Raohiioe . wof. . 7 » wio» i fo < au . Pinnulae 8 — i2 c.M. 



long. Smih-m(my~4i»~a~^ob6. (28) C. spinulosa. 



S.S. Pinnulae pinnate + throughout. r so- 



$. Main rachis not prickly, nakedS^ ^ ^^9) C. Muelleri. a 



$.$. Main rachis not prickly, hut scaly, hairy or tomentose. 



*. Edges cremate; each crenation corresponding withabullate 



vault j prominent on the upper surface. (30) C. oinops. 



*.*. Edges entire or crenulate ; prominent, bullate vaults wanting. 



h (51) P- schizochlamys^^ 



$.$.$. Main rachis prickly' 'amlr-iomenibse^'-or-^ir'^mfm-'aceous.^'^"^'-!, 



f, Tmtiary eegmmU adnata — to . tha^rachie. Under surface 



cobwebby. (32) C. arachnoidea. 



f .f . Lomor tertiary segments tUghlly utalked i Under surface 



naked or inconspicuously scaly. (33) C. celebica. 



A 



* (1) C moluecana, n. Br., Desv., Prod., 322; C\Brunonis,Wall., 

 Hk. Bk., Syn. Fil., 16, Schizocaena Brunonis, J. Sm., Bau. & Hk., Gen. Pil. 

 tab. II. 



Stipes SO — 100 c.M. long, the base slightly rough and furnished with 

 brown scales. Fronds large, + 100 c.M. long, simply pinnate. Pinnae nu- 



