FERNS OF CEYLON. 15 



ASPLENIUM (Diplazium) ZEYLANICUM, Hk. (p. 

 Forests of Ambagamowa and Kotmallee. "Rare; local. 

 Dever found it myself." Thwaites. 



BLECHNUM. 



B. ORIENT ALE, Linn. (p. 186). 



Extremely abundant in the Western and Central Provinces, 

 up to an altitude of 6,000 feet. Terraneous. 



BOTRYCHIUM. 



B. DAUCIFOLIUM, Wall. (p. 448). 



Not uncommon on the borders of streams, in the forests of 

 the Central Province, at an altitude of from 2,500 to 4,000 feet. 

 Terraneous. Dies off during a part of the year. 



B. VIRGINIANUM, 8w. (p. 448). 



Common, under bushes, on the plain of Newera Ellia. Dies 

 off in January ; comes up again in June. 



CERATOPTERIS. 



C. THALICTROIDES, Brong. (p. 174). 



Common in the Western and Southern Provinces, in wet, 

 swampy places. This is the only species of a curious genus; it 

 is an annual, and floats upon the surface of the water. 



CHEILANTHES. 



C. FARINOSA, Klf. (p. 142) Aleuritopreris farinosa, dealbata 

 and Mexicaria, Fee. 



Silver Fern. On rocks of the highest forests of the Central 

 Province. Common on the hills. Thwaites. 



C. MYSUREKSIS, Wall. (p. 135) C. chusana, Hk. 

 On rocks and banks, Rattotta, Matale, Happootella and 

 Ouvah, at low elevations. "Rocky places; very local." Thwaites. 



C. TENUIFOLIA, Sw. (p. 138). 



On rocks and banks, Western Province. 



