496 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 



to Britain. Named by Dr Thellung. — J. A. Wheldon. (See Journ. 

 Bot. 1913, 280). Also sent by Mr Travis. 



Euphorbia Esula L. Spring Hollow, near Stalybridge, S. Lanes., 

 v.-c. 59, Aug. 1913. Leg. F. Collier; comm. W. G. Travis. 



Ulmus campestris L., var. Birch, N. Essex, v.-c. 19, flowers. May 

 5, 1912; leaves Aug. 28, 1913. Apparently best left as the aggregate, 

 as twigs are slightly suberous and leaf-toothing coarse. — G. C. Brown. 

 "This comes under U. glabra Mill. (U. nitens Moench), I think." — Ed. 



Ulmus Plotii Druce. [Ref. No. 6608.] Near Sawbridge worth, 

 S. Essex. Fruits and young leaves, May 1912. — G, C. Druce. 



Parietaria ramijlora Moench, var. erecta. [Ref. No. 9768.] 

 Kingston Bagpuze, Berks, July 1913. This bears a superficial 

 resemblance to the continental P. officinalis L. = P. erecta M. and K. 

 Dr Schinz says P. ramijlora Moench = judaica L. The varietal 

 name is a little uncertain. It is apparently the var. fallax Grenier 

 and Godron. — G. C. Druce. 



Betula alba L. x B. pubescens Ehrh., var. microphylla E. S. 

 Marshall. [Ref. No. 3892.] By the Allt Coire Pheiguin, West of Garth 

 Castle, near Fortingal, Mid Perth, v.-c. 88, Sept. 2, 1913. Coll. E. S. 

 Marshall and C. E. Moss. A tree with pendulous branches, about 

 25 feet high. The foliage is nearer the second parent, but was very 

 sticky beneath (a sign of B. alba). A second form was gathered close 

 by, with leaves on the alba side, but approaching pubescens in habit. 

 T take this opportunity of mentioning that the article on Betula in the 

 Cambridge British Flora was entirely rewritten and much improved by 

 Dr Moss, in collaboration with Mr A. G. Tansley, but they preferred 

 that it should stand in my name only. — E. S. Marshall. 



Salix triandra L., var. Hoffmanniana Sm. = var. concolor Koch, 

 forma lati/olia Andersson. [Ref. No. 229.] " The Moors," Alpham- 

 stone, N. Essex, v.-c. 19, Sept. 21, 1913. See F. B. White's Revision of 

 British Willows, Journ. Linn, Soc, xxvii., p. 347 (1 889). The leaves on 

 this bush are of a lighter green below, but have not the slightest trace 

 of glaucosity. I have not seen flowers ; the bush is perhaps too young. 

 — G. C. Brown. " This is one of the forms of S. triandra L., ap- 

 proaching sub-spec. Hoffmanniana very nearly, but differing from it in 

 the leaf blades, being for the most part less ovate in outline and more 

 frequently parallel-sided than Smith's description allows. It is, no 

 doubt, 13. concolor, and perhaps near Andersson's var. lati/olia, whose 

 var. microphylla, with oval leaves, seems to come nearest S. 

 Hoffmanniana Sm." — E. F. Linton. 



