Iviii. GENEEA OV PEEKS : 



(b) Veins uniform reticulated. 



78. ANETIUM", Splitgerber, Hoeven et Vriese, Tijdsch. 



Nat. vii. 395. 

 ACEOSTICHI sp., Auct.; HBMIONITIDIS sp., Auct.; ANTROPHTI sp., Auct. 



Sori non-indusiate, consisting of few sporadic superficial 

 spore-cases occurring here and there on the veins in narrow 

 linear or small short groups ; the receptacles partially, though 

 very slightly, reticulated. Veins uniformly reticulated from a 

 costa, forming elongated sub-hexagonal areoles. 



Fronds membranaceous, simple, articulated. Rhizome creep- 

 ing. Distinguished by its sporadic fructifications. It forms a 

 connecting link between A.ntrophyum and the A.crostiche<K. 

 Ex. : A. citrifolium, Splitg. 



79. ANTROPHYUM, Kaulfuss, Enum. Fil. 197. 

 SOLESTOPTEBIS, Wall. Hb. ; HEMIONITIDIS sp., Auct. 



Sori non-indusiate, usually immersed, sometimes superficial, 

 narrow-linear, occupying the anastomosed veins which form the 

 sides of the areoles, mostly united; the receptacles therefore 

 partially, though generally, reticulated. Veins uniformly reticu 

 lated, from a costa or ecostate, forming elongated sub-hexagonal 

 areoles. 



Fronds simple, coriaceous or membranaceous. Sori continu- 

 ously or interruptedly reticulated. Rhizome tufted erect. 

 Distinguished technically from Hemionitis only by the partial 

 though frequent reticulation of the sori. The habit and aspect 

 are, however, quite dissimilar. 



Ex. : A. Boryanum, Elf. I A. giganteum, Sory. 



A . cayennense, Klfs. A. semicostatum, SI. 



A. pumilum, Klfs \ A. nanum, Fee. 



80. HEMIONITIS, Linnceus, Gen. PI. 2 ed.,944, (reduct.) 

 GTHNOGEAMMATIS sp., Link. 



Sori non-indusiate, superficial, narrow-linear, occupying all 

 the anastomosing veins; the receptacles therefore reticulated. 



