of the Mosses in Aberdeenshire. 303 
west from Aberdeen, and not 100 feet above the’sea-level ; it is 
however always barren. I have seen it in the upper parts of the 
county at 2400 feet, which however may not be its highest limit. 
Bryum Ludwigii. Glen Callater, at 2400 feet or upwards, and 
on Lochnagar at 3600. , 
B. Zierii. Chiefly at 2400 feet. 
B. turbinatum. Sea-level to 2400 feet. 
B. elongatum. Mostly at 2000 feet and upwards. 
B. alpinum. Near Aberdeen at 280 feet, but always barren ; 
upper limit unknown. 
B: punctatum 8. attains 3600 feet. 
_B. hornum. 1700 feet. 
Bartramia ithyphylla. Grows near Aberdeen ; it is abundant 
inland at 2000 feet and upwards ; the highest point attained has 
not however been ascertained. . , 
_ Pterogonium gracile and P. filiforme are chiefly confined to the 
inland parts of Aberdeenshire; I have seen them plentiful near 
Ballater at 800 feet to nearly 2000. 
Neckera crispa is like the two last, an inland species; I have 
ie it attaining 1600 feet, but cannot state its absolute upper 
imit. 
Hookeria lucens. From the sea-level to 2400 feet and upwards. | 
The altitudinal range of a few species of Hypnum have been 
ascertained. The following are abundant at 2500 feet: H. den- 
ticulatum, eurvatum, stramineum, pulchellum (at this height also 
_ H. rufescens grows in great profusion) ; Hypnum molluscum, adun- 
cum, complanatum, cordifolium and filicinum are all found at 1000 
feet, and some of them attain a higher elevation: A. purum, lo- 
réum; triquetrum and splendens grow upon Morven at 8000 feet: 
H. Crista Castrensis is abundant in some woods near Aberdeen, 
but I have not been able to ascertain its absolute upper limit. 
The following mosses were observed growing about the summit 
of Bennachie at 1700 feet, and twenty miles west from Aberdeen : 
Polyirichum alpinum, Dicranum heteromallum, Bryum hornum, 
Dicranum scoparium, Hypnum denticulatum, purum, splendens, 
loreum, cupressiforme, Trichostomum lanuginosum, Didymodon 
_purpureus, Polytrichum piliferum, Dicranum polycarpon, Bartra- 
mia ithyphiylia, Andrea rupestris, Trichostomum fasciculare, Bry- 
um nutans, Grimmia ovata. 
Adopting Mr. Watson’s regions of vegetation, the following may 
be stated as an approximation to the species mostly characteristic 
of these regions :— 
Region of the Plains. 
Southern. Most species of Phascum, Schistostega, Weissia Stark- 
eana, Tortula cuneifolia, Bryum Tozeri, Pterogonium Smithii, Leu- 
codon, Neckera pumila, Daltonia. 
