III. GHLiEICHEl\IA.CE5^^\:E. 



Sori dorsal, consisting of few (2 — 12) capsules. Capsules commonly 

 decumbent and placed in a whorl, with the receptacle in the centre, sessile 

 or short-stalked, surrounded by a horizontal or subhorizontal, complete ring, 

 bursting vertically. Receptacle punctiform. Indusium wanting. 



Rhizome mostly creeping. Fronds rarely unbranched, generally dichoto- 

 mously forked or pinnate and if pinnate the pinnae or pinnulae dichotomous, 

 frequently bearing axillary buds; the leafy portion of the branches commonly 

 pectinate; veins always free. 



Tropical^ and extra-tropical in the southern hemisphere, %(^eAp nt/onMi-tf<^i'^' 



No. 7. Oleichenia. 



'T. GLiElCHETVIA., Smith. 



Sori consisting of few, commonly 2 — 5, rarely 6 — 12 sessile sporangia placed 

 mostly in a whorl. No indusium. 



Rhizome creeping, rarely erect. Stipes mostly scattered, not articulate 

 to the rhizome. Fronds mostly forked, rarely pinnate, the primary branchings 

 pinnate or once ' or more times forked again, or pinnate and forked. The 

 dichotomous forms are often purveyed with axillary buds, which not rarely 

 ^row out to fully developed branches, which give the fronds the appearance 

 of pinnate or 2-pinnate fronds with dichotomous branches of a higher order. 

 The thus formed spuriously pinnate fronds are often to be recognized by/the / 

 presence of mostly divided stipulae or a mass of densely crowded scales 

 placed in the axils of the principal branchings and wanting in the truly pin- 

 nate forms. Ultimate segments (lobes or leaflets) semiorbicular and contiguous 

 or linear and pectinate; veins free, simple or forked, often immersed or u 

 obsolete 



Tropical, and extra-tropical in the southern hemisphere, <i ^^c^^A -w*^* 





Arrangement of the sections. 



§ 1. PLATYZOMA. Fronds unbranched, simply pinnate; leaflets roundish or ovate, 

 cucuUate, to 2 m.M. long. flk. Rk., Syn. Fil., tab. I, fig. l,a— c; Diels, in 

 Engl. & Prantl, Nat. Pfl.Fam., I*, fig. 189, C. (Not in Malaya). 



o 



I 3 



