(4) 



about Yokohama; but the present variety does not occur in these localities. 



Plate XX. Fig. i, upper portion of the plant with flower-heads; 2, lower 

 leaf; 3, vertical section of flower-head; 4, ray -floret; 5, disk-floret; 6, same cut 

 vertically; 7, same with corolla and stamens removed; 8, floral diagram; 9, 10, 

 achenium of the disk and its cross-section; 11, 12, achanium of the ray and its 

 cross- section; 13, embryo: — all exeept i and 2 enlarged. 

 : ^lHoOoHi-. 





