HYPNUM ABIETINUM. 357 
specimen of Hypnum abietinum without locality; but this Herbarium 
was known to Dillenius, and is mentioned by him, therefore it is a fair 
conclusion that the specimen is his form, and'no other locality having 
been named, it may have come from the original station. The name 
abielinum it seems useless to attempt to trace beyond Bobart, who 
supposed it to be C. Bauhin's * Museus abietis facie ;” but after Dille- 
nius's time it has been definitely fixed by Linuzus and Hedwig to the 
smooth form, having, as most authors agree in saying, branches with 
leaves teretely imbricated, the cauline leaves cordate, acuminate, and 
the branch-leaves ovate. This form is found on the sands of Barrie, 
on the sands on the coast at Pembray, and I have it from Norway 
with fruit, Blyé¢ ; from Funk, No. 196, also in fruit ; from Switzerland, 
Sir W.J. Hooker ; from Haller, No. 1762; from the Pyrenees, Spruce, 
No, 1 ; from Chambéry, in fruit, Mr. Woods and De Notaris; in 
* Mougeot et Nestler,’ No. 226, from British North America, in fruit, 
‘Drummond,’ No. 216, and sterile, Bourgean. Most authors say it is 
common, but I have never seen it in Herbaria from more than a very 
few stations, and no specimen was contained in the set of the Stinpes 
Normales of the * Bryologia Europea,’ in my herbarium. So far as I 
have observed, the British specimens are all female. : 
The Reigate Moss may thus be characterized :—Thuidium hystrico- 
sum, foliis caulinis e basi latiore cordata acuminatis lanceolatis faleato- 
eurvatis subsecundis, rameis ovato-lanceolatis cellulis ovoideis, czeterum 
T. abietino conveniente. : 
Ha». Box Hill and Reigate Hill, in Surrey ; Morant's Court Hill : 
near Sevenoaks, Kent, on the same range of hills, throughout which it 
probably occurs; Hampshire, Mr. A. O. Black ; Barton Mills, Suffolk, 
. Borrer; near Genoa, De Notaris; fruit unknown. — 
The proportionally longer, loosely appressed, or variously curved 
leaves of this Moss easily distinguish it without recourse to the micro- 
scope, but with its aid the leaf-cells are seen to be more generally of an 
ovoid outline than in 7. abietinum, which has them for the most part 
tound or nearly so; in the nerve, margin, and degree of papillation, 
there seems to be not any appreciable difference. 
Having thus called attention to this not very pretty Moss, others 
. May be able to trace its existence in new localities, and some interme- 
diate state may connect it with the older form ; but I have not been 
able to find any such in any of the collections to which I have had 
 aceéss, 
