XIV. 



Terrestrial or epiphytical. Rhizome creeping, branched, the branches 

 upcurved, sometimes terminating into foliate shoots. Shoots elongate, erect 

 or pendulous, foliate, simple or more or less dichotomously branched, the 

 stem traversed by free or united tracheide bundles. Leaves small, approxi- 

 mate or distant, heteromorphous, the barren ones simple; sporophylla 

 2-foliate or deeply 2-dentate. Sporangia placed singly in the axils of the 

 sporophylla, 2 3-locular; spores of 1 kind, bilateral, i. e. bean-shaped or 

 reniform, 



10O. TMESIFTERIS Bemhard. 



Sporangia longitudinally oblong, 2-locular, 2-lobate, with the septum 

 across the slightly contracted narrow diameter. 



Stems usually simple, terete or subterete, somewhat angled ; tracheide 

 bundles 35 or more, isolated or united in groups, the groups free, often 

 circularly or radially arranged, enclosed in a tube consisting of 1 or more 

 layers of red-brown cells. Leaves small, moderately loose, entire, sessile; 

 sporophylla smaller, stalked, 2-foliate, forming terminal spikes or arranged 

 down the stem or branches. Engl. & Prantl, Nat. Pfl.Fam., I 4 , fig, 381, 

 383 B. 



Chieflv Australian. 



(1) TIM. laiiiieiisia. itcmh., Bk., Fern All., 30; Bau. & Hk., 

 Gen. Fil., tab. LXXXVI. 



Shoots Tit 60 cm. long, the stem slender, nudate towards the base. 

 Leaves lanceolate-oblong, TA 3 cm. long, to 1 cm. broad, obtuse or api- 

 culate, with a distinct midrib and decurrent base. Sporophylla 2-foliate, 

 the leaflets similar to the barren leaves but smaller. 



Philippines, New Guinea to Polynesia, New Zealand, Australia, 



