PLANT NOTES FOR 1910, ETC. 
525 
characterises it as follows: — P. nigra x deitoidca (P. scroiina, 
Hartwig). hirst cross. Leaf with a few cilia irregularly disposed 
on the margin; glands at the base variable o, i, or 2, on each leaf, 
in shape like deltoidea, but appreciably different. 
T. his is the P . deltoidea, Marsh, var. serotina of my British 
Plant List. 
Mr. Henry also suggests, though his investigations are not yet 
finished, that the cricket-bat willow P. alba, var. ccerulea, which is 
known only as a female tree and originated in Norfolk about 
1700, is the first cross between S. alba and S. fragilis, but, like 
most first crosses, much more strongly resembles one species than 
the other. It is, in fact, so close to alba, that it is universally 
considered to be a variety of that, viz., S alba aeruleaP 
Anatomy of the British Carices, by our late member, 
Francis E. Crawford. Large 8vo, pp. xiii. 124, tt. xx, Edinburgh, 
Oliver and Boyd, 1910. ■]s. 6d. With a short biographical sketch 
by A. J. Pressland. 
Botany of To-Day. G. F. Scott Elliott [author of the 
Hora of Dumfries]. Seeley and Co., London, 1910, pp. xv. 352, 
^s. A well written and suggestive Avork. 
The Trees of Great Britain and Ireland. By H. j. 
Islwes, F.R.S. and A. Henry, M.A. Vol. V., Edinburgh, pp. viii. 
1 00 1 — 1333. Contains 49 species of Pinus including P. Pinaster, 
14 species of Cupressus and 62 species of Quercus. 
• 
The Lighter Studies of a Country Rector. The Rev. 
Canon J. Vaughan Pitman. 5j-. Contains much matter of 
Botanical Interest. 
Novus Conspectus Flor^ EuROPi®. Michaele Gandoger. 
A. Zeermann, Paris, pp. 541, 1910. 
Catalogue des Plantes Vasculaires du Tessin. Paul 
Chevenard, Geneva, 4to., pp. 552, 1910. 
A History OF Botany, i860 — 1900. J. Reynolds Green, Sc. D., 
F.R.S. , 8vo., pp. 543, Oxford Clarendon Press, 1909. 9.1. 6d.net. A 
worthy continuation of Sach’s ‘ History of Botany,’ but of course 
