J. SMITH ON THE GENETtA OF FERNS. 63 



linear, 10 inches long, sinuously-pinnatijidy lobules rounded, 

 distant, each bearing a small round sorus. 



Species. A. Meyenlana; Schott. (Psygmium elegans; Presl.) 

 — Illusi. Schott. gen.fil. f, 19. 



Ois.This singular-looking fern is also a native of Luzon, 

 and has the same habit and character of venation as Dryos- 

 tachium from which it differs only by its small distant sori. 



Although it appears very probable that Schott and Presl 

 have drawn up their respective characters of this genus from 

 the same specimen, yet they differ from each other, and from 

 my observations. This has no doubt arisen from the very 

 obscure state of the fertile venules; but by a careful examina- 

 tion, it will be seen that the sporangia are not produced either 

 on the apex of a free venule, (as stated by Presl,) or on the 

 confluent apicesoftvvooutwardly directed venules, (asstated by 

 Schott,) but are produced on the confluence of several venules 

 as in the two preceding genera, and agreeably to what might 

 be expected by the structure of the sterile venation, and 

 therefore Aglaomorpha, like Dryostachium, is not so charac- 

 teristic as a distinct genus, as its singular appearance would 

 lead us to imagine. 



24. Lecanopterts. Blume. 



Feiwscostseform,flexuose. Feww/es compound anastomosing, 

 producing variously directed free sterile veinlets ; sporangi- 

 ferous venules confluent, produced on exserted marginal 

 lobules, which are concave, inflexed, and cupuliform, form- 

 ing large, oval, distant sori. Fronds linear-lanceolate, pin- 

 natifid, 6 to 10 inches long, lacinicc elliptical; the lower ones 

 entire and sterile, the superior ones sinuously lobed, each lobe 

 becoming rejlexed, and bearing a single sorus. 



Species. L. Carnosa; Blume, 



Obs. The species upon which this genus is founded agrees 

 in venation and its soriferous lobes with Aglaomorpha, but 

 it is distinct in its general aspect. The circumstance of the 

 sori being produced on projecting lobes, which are concave 

 and indusiiform, may not unaptly be compared to the sori of 



