98 THE JOURNAL OF BOTANY 
origins! simple flower (not the catkin).”” Mr. Worsdell isi the 
structure of these brooms as exceedingly remarkable, a ends 
to continue ia investigations, the result of whi ‘ch A will 
publish later 
This structure may be seen more or less clearly in the further 
= ograph (fig. 2), which shows a ~~ bisected as prearias as 
=e along the median line. It 1 be noticed that t 
er of incipient virescent portidy in this broom is vias 
re A ch greater than would be produced normally. In some 
of the larger brooms there must be hundreds, perhaps thousands, 
of these flowerets; whereas, normally, no more than twenty or 
thirty a be produ uced. 
As mer goes on, the abortive floral organs of which the 
broom 2 composed begin to dry up. Mr. E. A. Bowles says * 
not seen. Still later, the broom turns quite black and comes to 
resemble nothing more than a large number of used and aperee 
tea-leaves strung together in a big bunch, as shown in then 
photograph (fig. 3). In this state, ee brooms son enve * Pa 
n the trees, often dozens on each, forming, especially when they 
are numerous, very conspicuous eh not unlike birds’ a. 
rooms, or some of them, continue to hang on the trees 
through the winter and a least until the following summer, when 
they may be seen hanging side by side with the green new brooms 
of that summer, 
The gall appears to be well known upon the Continent; but 
as to its range there I have little information. It is met ‘with 
ey 
received — from near Stuttgart, sent by Herr Pfitzer, the 
nurseryman.t 
On the Rowioant, the gall is aa to the action of a gall- 
mite belonging to the genus Hriophyes by Prot A ig oe us), 
of Vienna.} i _ nt members o thie Ee are iene to 
oes to Prof. Nalepa, the mite is to be found it in en gall 
only when the latter is in the incipient stage. I have myself 
examined mature brooms without caus able to detect either mites, 
* Journ. Roy. Hort. Soc., - exvii (1910-11). 
+ Houard gives fom: “ loc. eh a thcippeed description of the gall, as well 
SSH Pome cin atin or figure of it 
wens Jatraicher, vii. pp. stapes A tape 1894); Denkschr. 
and pl. v. figs. 3 and Zoologica, heft 
as (Sitter, 19th p- oat and pl. 1. ii. figs. 5a yg “a 
ger Akad. Wiss., Wien, 1892, p. 128. 
Sere a iceatarin RO 
