12 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
the side of the River Irthon. — W. H. Painter. “A few specimens 
shew some resemblance to catnbrica, but the bulk is merely small type, 
and the whole gathering a series of depauperate states, not a true 
variety.” — Ed. 
Antemiaria dioica, R. Br. Down, near Pitchcombe, v.-c. 33, E. 
Gloucestershire, June 14th, 1901. — W. A. Shoolbred. 
Inula britannica, L. Cropston Reservoir, August 1901. — T. A. 
Preston and A. B. Jackson. “ I send a further supply of this, to 
shew that it still exists in the locality where it was discovered in 1894 
by Mr. Preston. Since that year it has increased considerably in 
luxuriance, and now occupies a considerable patch of ground on the 
shore of the reservoir, and has evidently come to stay. It is probable 
that some waterfowl is responsible for its introduction here.” — A. B. 
JACK.SON. 
Ambrosia trifida, L. Birkenhead, Cheshire, 27th September 1901. 
— S. G.asking. “ Stem and leaf characters quite agree with the des- 
cription in ‘DC. Frodromus,' v. 527; no fruit is present. A native of 
North American river banks from Canada to Georgia.” — Ed. 
Dioiis candidissima, Desf. Abundant on the sandy bar which 
separates Lady’s Island Lake from the sea, south-east Wexford, Ireland, 
county-division 12 of ‘Irish Topographical Botany,’ nth September 
1901. These specimens were collected for the Exchange Club by 
Mr. Cecil P. Hurst, whose interesting paper on ‘The Range of Diotis 
candidissima, Desf., in England and Wales, and in Ireland,’ reprinted 
from the ‘ Memoirs of the Manchester Literary and Philosophical 
Society,’ No. i, vol. xlvi., pp. i to 8, is posted with this Report to each 
member. By the courtesy of the Lit. and Phil. Society I reproduce the 
two plates, from photographs of the locality in which the Diotis occurs. 
Both photographs were taken at the western extremity of the bar at 
Lady’s Island Lake on 15th October 1901. The first plate is a view 
looking southward across the bar. Mr. Hurst points out that there 
are a few plants of Euphorbia Paralias in the foreground, recognisable 
by their dark colour in the photograph. The sandy, gravel-strewn 
nature of the soil affected by Diotis is better shown in Plate II. 'Bhe 
young plants of Diotis approximate so much in colour to the grey 
[lebbles among which they grow as sometimes to be with difficulty 
distinguished from them. The second plate is a view looking west- 
ward along the bar. The plants in the foreground are rather more 
weather-beaten than those in Plate I. The way in which Diotis 
mono[iolises the ground in this locality, stretching far away into the 
distance, is well shown in this photograiih. The shrubby nature of 
the more luxuriant plants is also noticeable. — Charles Baii-ev. Also 
sent by Mr. Druce. “ The thanks of the Club are due to all three 
gentlemen for these beautiful specimens of a very rare and interesting 
species.” — Ed. 
