32 ART. ;). — :\r. YOKOYA:\rA. 



;m(l ocoasionnlly dichotomizing. Tlie veins are entirely obliterated. 

 The length of the leaves must have been more than 10 cm., but 

 there is none that is preserved up to the apex. Looking at the 

 figure, some of the leaves seem to be toleiably broad : but this 

 is only an appearance due to their partial overlapping. 



Although the breadth of the leaves is a little greater than 

 in most of the specimens hitherto found in other countries, I 

 believe, the plant belongs to the same species. 



7. PALYSSIA MANCHURICA x. sp. 

 PI. YITI. Fig. 2, 2;i. 



A single specimen of a branch of a Palyssia shows subop- 

 posite branchlets, with leaves linear, broadest at a point about 

 one-third of the distance from the base, expanding, acuminate, 

 recurved, spirally disposed, on a cushion decurrent and sessile. 

 The midrib is strong, elevated as a ridge on the back side 

 of the leaf. 



The species already described which can be compared with 

 this one are three, viz. Falyssia Brauni Exdl., P. indica Feistm. 

 and P. conferta Feist:^. The first occurs in the Rhtetic of 

 Euro])e and has been figured by Schexk, ScHi^rPER and others, 

 and when compared with the Chinese form, shows leaves which 

 are decidedly longer. The second which occurs in the Rajmahal 

 (Liassic) and Cutch (Lower Oolite) Series of India has leaves 

 whicli besides being larger, are obtuse at apex. The third, also 

 found in the Cutch Series, shows leaves which, though more or 

 less acute, are more parallel-sided and not so recurved as in 

 those of the Chinese form. 



