440 BOTANICAL NOTES, NOTICES, AND QUERIES. 
logist ’ what I believe to be a new species of British Polystichum, the 
characters of which I will endeavour to show in a future number. It is 
probably the same to which Mr. Newman alludes at p. 119 of his new 
edition of the ‘British Ferns,’ as a variety of P. angulare, found by Mr. 
Jenner in Sussex, although the description of his plant is somewhat at 
variance with mine. I beg to propose the specific name of “ affine,” un- 
less it prove to be an already described Continental Fern. 
Cork-barked Elus.—The Elms growing in the upland districts of this 
parish, the soil stiff white clay, have their shoots covered, even when quite 
young, with corky bark in great abundance; they are varieties of Ulmus 
glabra, and called here the Hertfordshire Elm. I gathered the enclosed 
from a hedgerow at the side of a wood; all the shoots, even those growing 
vigorously, were covered with the same bark. T. RIVERS. 
Sawbridgeworth. 
[The Elm in this state, with its bark producing rifted cork, is the U7- 
mus suberosa of Ehrhart. Can our experienced correspondent explain the 
cause of this condition of the bark? All the European Elms, except U. . 
montana, the Wych Elm, and U. effusa, appear to be liable to the affec- 
tion, sometimes being smooth-barked, sometimes cork-barked. We believe 
the cause of the cork-formation has never been explained.|— Gard. Chron. 
Gentiana Pneumonanthe.—John Tatham, in answer to the query (page 
247) of the ‘ Phytologist,’ informs the Editor that he never found Gentiana 
Pneumonanthe near the village of Clapham; the plant is too conspicuous 
to have been overlooked. 
Settle, 1856. 
Native Plants.—Mr. Editor,—Mr. Loudon, in his ‘Arboretum et Fru- 
ticetum Britannicum,’ says, “‘ In the present day botanists consider all those 
plants indigenous to a country which have existed in it beyond the me- 
mory of man or the existence of written records, and which propagate 
themselves freely by seed without human agency.” Query, are botanists 
generally willing to adopt the above canon ? QUERIST. 
Communications have been received from 
Joseph Woods, F.L.8.; C. C.; Edwin Lees, F.L.8.; D. W.; Dr. L. 
Lindsay; John Windsor, F.L.S.; Rev. H. A. Stowell; J. G. Baker; 
C. A. Johnson; W. P.; David Moore, A.L.S.; An Irish Lady; Thomas 
Howarth; George Jorden; Rev. W. T. Bree; Rev. W. A. Leighton ; 
H. H.; E. Marcus Attwood; A. G. More, F.L.S.; W..L. Noteutt ; 
Thomas Moore, F.L.8.; J. 8. M.; Dr. Hugh Cleghorn, F.L.8.; Rev. 
Gerarde E. Smith; T. Rivers; G. B. W. 
BOOKS RECEIVED FOR REVIEW. 
Bromfield’s Flora of the Isle of Wight. Edited by Sir W. J. Hooker, 
K.H., ete., and Dr. T. Bell Salter, F.LS. 
Moore’s Irish Grasses. Third edition. 
A Botanico-Topographical Map of the Isle of Wight. 
