Note on Lo-Kao. 
167 
inflorescence into a palpably indefinite one by heterotaxy, and the 
appearance of a new circle of florets by prolification of flower-buds 
in the axils of the median peduncular involucre. 
Explanation of figures in Plate B :— 
1. Flower head with opened florets and head with florets 
unopened in axil of the same leaf of Acacia eburnea, Willd. 
2. Young infruitescence shewing that even in fruit there is 
no tendency to elongation in that part of the peduncle to which 
florets and subsequently pods are attached ; from the same plant 
as preceding. 
3. Diseased flower (covered with the granular papillae 
indicative of the disease) shewing distortion of leaf; general 
hypertrophy of portion of branchlet, stipular spines and in¬ 
florescence ; prolification of florets in the axils of the peduncular 
bracts ; apostasis, and at the same time heterotaxy^ in the normally 
floret-bearing portion of peduncle ; with pedicellation of indivi¬ 
dual florets that are normally sessile. 
\Repnnted from the fournal of the Agricultural and Horticultia'al Society 
of India, Vol. VIII,, Part II, Neiv Series, pp. 278-281.] 
Note on Lo-Kao, the Chinese Green-Dye; yielded by various 
species of Rhamnus. — By D. Prain. 
The species of Rhamnus of Eastern Asia are closely allied 
and therefore not easy to define so that those which-yield a green 
dye have been variously named by different authors. Two well 
known plants afford this dye, and to these a third would seem to 
have to be added. 
The first of these is i?. davuricus, Pall, to which Forbes and 
Hemsley in four. Linn. Soc. xxiii, 128, reduce R. utilis, Dene, 
89 
