95 



stipe. Veins anastomosing, hidden. Sori con- 

 tinuous all round. 



Grown in gardens. 



Distribution: Chittagong Hills up to 1,000 

 feet elevation ; Orissa on the Balasore Hills ; 

 Burma ; Malay Peninsula. Philippine Islands. 



GENUS XVII. LITHOBROCHIA PRESL. 



(Deriv. Lithos, stone ; brocha, spots from the 

 areoles of the veins resembling pavement.) 



Veins copiously anastomosing with free 

 included veinlets. The rest as in Pteris. 



Lithobrochia tripartita J. Sm. 



Stipe erect, straw-coloured or brownish, 

 naked, polished. Fronds divided into three parts ; 

 the central division, the longest, having a termi- 

 nal pinna 6-9 inches long and several lateral 

 pinnae ; pinnae cut down almost to the rachis 

 into linear-oblong segments which are slightly 

 toothed when barren ; lateral divisions smaller 

 than the central and similar to it ; sometimes 

 forked again. Surfaces and rachis naked. 

 Texture herbaceous. Veins fine, anastomosing, 

 forming chiefly two series of areoles (parallel 

 with the midrib) from which proceed free veinlet's 

 which fall short of the margin and terminate 



