PI. 287. 
A FIELD OF THE TUBEROUS COLEUS IN SINGAPORE. 
(Coleus rotundifolius (Poir.) Cheval. and Perr., S. P. I. No. 51768.) 
This plant seemingly outyields the potato, over 15 tons of tubers 
per acre having been reported from Guadeloupe (Revue Cult. 
Col. 10:273, 1902).. However, according to the Kew Bulletin, Add. 
ser. IX, p. 532, there is very considerable variation in yield, 
due apparently as much to the variety of plant as to the cul- 
tural conditions. (Photographed by J. F. Rock, Singapore, 
Straits Settlements, September, 1920; P22601FS.) 
