332 THE JOURNAL OF BOTANY 



inside that the flower could not -be reached by an insect from outside 

 the cage. In spite of this obstacle the flowers Avere fertilized and 

 produced berries, the seeds from which are now growing. Early this 

 year (1918) as soon as the flower buds began to show, and about 

 three weeks before they opened, several were again enclosed in these 

 net bags, the sizes used being 2 mm. (to re-test last year's experiment) 

 and a 1 mm. mesh. Fertilization was again obtained under the 2 mm. 

 size, and also in the 1 mm. A piece of the coarser net being sub- 

 initted to a well-known entomologist, he is confident that none of the 

 insects suggested as pollinators by the German writers could by any 

 means pass thi'ough it : it will follow that a mesh only half the size 

 will form a still more effective barrier. If therefore the mistletoe is 

 entomophilous, the insect visiting it must be able to pass through a 

 hole 1 mm. in diameter and hence must be rather minute. Every 

 care was taken in fixing the bags so that there might be no access to 

 the flower except through the bars of the cage. It is hoped to 

 re-test these experiments another year, but if they have been correctl}^ 

 carried out, they would appear to cast doubt on the statement, resting 

 wholly on Grerman authority', that V. album is entomophilous. — 

 Etiielbert Hobne. 



PiLULARIA GLOBULirEEA L. IN THE ISLE OF WiGHT. In the 



spring of the present year I noticed this plant carpeting a small 

 heath-pool on Bouldnor Hill, near Yarmouth, the seaward side of 

 which hill affords the unique exposure of the Hempstead Beds. In 

 the autumn I have found it again in considerable abundance and in 

 fruit in two other pools, apparently the remains of old clay-pits dug 

 out for the brickworks, some distance away but on the same hill;- It 

 is curious that so distinct a plant is not recorded for the Isle of Wight, 

 either in Townsend's Flora of Ham]) shire or in Morey's Guide to the 

 Natural History of the Isle of Wi(jht. — James Groves. 



Saxifraga Deucei in Co. Donegal. — Mr. C. E. Salmon has sent 

 for my opinion, three specimens collected in June 1886 by Henry 

 M. Wallis on a cliff, 300 feet above the sea, near Torneady Head, 

 Arran More, which clearly belong to this species. They have turned 

 brown, in the com-se of years, and have more numerous glands than 

 usual ; this may be due partl}^ to a more northern climate, and partly 

 to a stony exposed situation. Mr. N. E. Brown had named them 

 S. ccBspitosn L., which is by no means a bad determination ; but 

 they differ from that in the shape (narrow, parallel-sided, acute) and 

 clothing of the leaf -segments, the narrower subacute sepals, and the 

 longer, rather narrower petals. This great extension of range is most 

 satisfactory ; I feel sure that aS*. Drucei will be found in other parts 

 of Ireland, and expect it to occur on the Galtees, Co. Tipperary. — 

 Edward S. Marshall. 



Epilobitjm hirsutum X roseum in Surrey. — Mr. Salmon also 

 forwards two pieces (evidently side-shoots) of a Willowherb found by 

 him beside a pond near Newdigate (September 1916), with the 

 remark : — " This seems to be a hybrid in which F. hirsutum plaj^s a 

 part." That is clearly correct ; the clothing of the stem and foliage, 

 and the relatively long petals (i to i inch), leave no room for doubt. 



