37 



». HEMITELIJ^., R. Bvou,n. 



Characters of Gyathea, but the indusium consisting of a lateral, mostly 

 seniiorbicular, convex scale, attached at the inner side of the receptacle, too 

 small to cover the sorus permanently. Fronds never simple and the veins 

 sometimes anastomosing near the costae. Hk. Bk., Syn. Pil, tab. I, fig. 5; 

 Diels, in Eng. & Prantl, Nat. Pfl.Pam., V, fig. 82, A— C. 



Tropical and subtropical. 



§ 1. EUHEMITELIA. 

 § 2. AMPHICOSMIA. 



Arrangement of the sections. 



Costal veins anastomosing. (Not in Malaya). 

 'Veins all free. 



iSee Supplement 1. 



Stipes not prickly. — 



>K. Ultimate segments entire or crenulate. 

 >|<.>K. Ultimate segments strongly serrate. 

 Stipes prickly, at least at the base, 

 f. Main rachis smooth. 

 f .•{•. Main rachis prickly. 



(1) H. crenjjlata. 

 (2).H.^^ensis. 



(3) H/Junghuhniana. 

 (4) H. sumatrana. 



* (1) H. crenulata, JHef*., Rac, Flor. Bfz., I, 38; Alsophila crenu- 

 lata, Mett., Hk. Bk., Syn. Fil , 44. 



Stipes different in length, often bearing at the base some contracted or 

 reduced pinnae. Fronds to 150 c.M. brag, to 70 c.M. broad, oblong-elliptic, 

 narrowed towards both ends, 3-pinimte. Pinnae lanceolate, to 10 c.M. broad, 

 on stalks to 1 c.M. long. Pinnujtre sessile, to 15 m.M. broad. Ultimate seg- 

 ments linear, bluntish, the edge entire or slightly crenate. Texture herbaceous ; 

 rachises villose above- or/Beneath; under surface scaly on the costae. Sori 

 2 — 6 on each side of tire costae, occupying the lower veins. 



Sumatra, Java,A'hilippines. 



(2) H. cf^pensis, n. JB.-., Hk Bk, Syn. Fil., 29; Ban. & Hk., Gen. 

 fil, tab. XIJII, A; Cyathea capensis, Sm., Christ, Farnkr. d. Erde, 322, fig. 1023 ; 

 Amphiamnia riparia, Gardn., Lond. Journ. of Bot. I, tab. XH. 



stipes scaly at the base, often bearing anomalous pinnae, whi^ih are 

 10 C.M. longi compoundly . and pinnatoly div i idod with a rigid , jaohio and 



