949, THE JOURNAL OF BOTANY 
n n r. Dunn does not mention any 
English locality for the plant in his Alien Flora.—James Barrrten. 
Mnium mepium Br, & Sch. 1n Brrrain.—On the 15th J uly, 1902, 
I gathered, in marshy ground, on the western slope of Ben Lawers, 
a plant which from its habit and general facies I took to be Mnium 
ifine Bland. var. elatum Br. & Sch. Subsequent microscopical 
- N. Dixon and Mr. A. Gepp, who, kindly com- 
paring it with a specimen of M. medium of Lin erg’s gathering 
in the British Museum, found a marked difference between the 
plants, both in habit and structure. Finally I sent it to Dr. 
Hagen at Opdal, who concludes that it is undoubtedly M. medium. 
the specimens examined consist at the leaf base sometimes of one, 
sometimes of two cells. He adds that he has compared the plant 
with examples of all other species of Mniwm which could enter into 
consideration, but that it differs fr i m. Mr. Dixon 
points out that Husnot makes M. medium a variet 7 
hich, however, he does not appe be supported by any other 
- bryologist. Apart from its dioicous inflorescence, M. affine differs 
was gathered, my friend the Rev. C. H. Binstead discovered on 
another part of Ben Lawers Hypnwm turgescens Jens., also an addi- 
yn J. Cooks. 
Primuta Evatior Jacq. 1s Soura Lincotnsuree.—Mr. J. Hawkins, 
of Grantham, recorded this plant as a native of the chalky boulder 
clay, in The Field, in 1905. I was more than sceptical about the 
matter, as I have had quite a hundred natural hybrids between 
P. acaulis and P. veris through my hands in the last thirty years. 
I have also made many experiments in crossing the three plants 
ruiicially. Ihe conclusions drawn f, se experiments were 
published in The Naturalist, 1905, pp. 208-205. On the 27th of 
