108 
rERSONAMA 
being. He is compiling the accounts of the species in the Biological 
Flar’d of the British Isles and would again be grateful for any help. 
SYSTEMATICS ASSOCIATION: RESEARCH COMMITTEE 
Mr. B. Ij. Burtt, Convener of the above Committee, asks members 
who are engaged in autecological and/or cytogenetic-taxonomic re- 
searches on the British Flora to co-operate with the Committee by 
notifying him of the names of the species being studied. By doing so, it 
will be possible to obviate overlai)})ing between different workers un- 
known to one another, and will enable him to give information about 
the work going on in any particular group. Particulars should be sent 
to Mr. B. L. Burtt, Royal Botanic Garden, Edinburgh. 
LITHOSPERMUM ARVENSE L. AND L. OFFICINALE L. 
Mr. J. S. L. Gilmour would be glad to receive unlimited quantities 
of ripe seed of Lithospermiim arvense and L. officinale. It has been 
showm that some species of the genus contain a substance which is of 
great importance for medical purposes. Different lots of seed can be 
bulked if more convenient, though it would be preferable to keep seed 
from different localities separated ; seed of each species should be kept 
separate. Seed should be sent to him, labelled wdth name of species and 
place and date of collection, at the University Botanic Garden, Cam- 
bridge. Postage will be repaid. 
POLYGONUM (SECT. AVICIILARIA) 
Mr. D. W. Jowett is working on the above section of Polygonum in 
Britain. He would be very grateful for both material and information. 
The material may be living (including seed), herbarium and/or pickled 
for anatomical and for cytological study. 
