LOOMIS AND HEUER: ROOTING OF CRYTOSTEGIA 



45 ~ 



40 



15 



I 



S3 



BCD 



Diagram 1 



A B C D 



Diagram 2 



Diagram 1. Total number of cuttings that rooted and time required for the roots to 

 develop in 100 "old girdled" cuttings and 100 ungirdled cuttings, half of each lot being 

 treated with Rootbne and half left untreated. Columns A and B are "old girdled" cuttings ; 

 C and D are ungirdled cuttings. Cuttings in columns A and C treated with Rootone. Solid 

 black portion of columns represents the cuttings that rooted in 10 days ; vertically-hatched 

 portion, the additional cuttings that rooted in 17 days ; obliquely-hatched portion, the 

 additional cuttings that rooted in 22 days ; blank portion, the cuttings that failed to root in 

 22 days. 



Diagram 2. Character of roots produced by the cuttings shown as rooted in diagram 

 1, with arrangement of columns and treatment of cuttings in them the same. Black portion 

 of columns represents cuttings that produced strong roots ; vertically-hatched portion, cut- 

 tings with good roots ; obliquely-hatched portion, cuttings with fair roots ; blank portion, 

 cuttings that developed only poor roots. 



