156 CERATOPTERIS THALICTROIDES. 



peculiar habit of the plant, and the stag's-horn looking fronds 

 render it an interesting plant. 



An evergreen stove Fern. 



Native of the American Meridian, Asia, the East Indies, 

 and China. 



It was raised from spores in the year 1834. 



Barren and fertile fronds different; glabrous. 



Sterile fronds bipinnatifid, reclining, having oblong-obtuse 

 segments. 



Fertile fronds contracted considerably; habit erect, three or 

 four times pinnate, having linear-revolute segments. 



Length of barren frond from twelve to eighteen inches; fertile 

 fronds from twenty to thirty inches; colour light green. 



Sori linear, continuous, parallel, and superficial. Sori hid by 

 the reflexed margin of the segments. 



Veins transversely elongated and distantly anastomosing. 



Stipes nearly quadrangular. 



Both barren and fertile fronds are viviparous. 



C. Parkeri only differs in regard to the elastic spring of the 

 spore-case, yet as Mr. Smith has raised C. thalictroides from 

 spores of C. Parkeri, it cannot be distinct. 



I have received plants of this Fern from Mr. J. Henderson, 

 of Wentworth. 



It is in the Catalogues of Messrs. Sim, of Foot's Cray; E. G. 

 Henderson, of St. John's Wood; Veitch, Jun., of Chelsea; A. 

 Henderson, of Pine-apple Place; and Kennedy, of Covent Garden. 



The illustration is from a plant in my own collection. 



