10 
them separate in the Icones, though I am not certain whether his _ 4 
drawings were made from Drummond’s 149 or from Watson’s 
Utah specimens. It is only an inference on my part that the 
Kew specimens were taken from 151, however. The resemblance 
of our specimens of 151 to 148 which was distributed as O. 
anomalum is very close, and the specimens are in the same stage 
of growth, so that it is not impossible that some specimens of the 
latter may have been mixed with 151 in collecting or distributing. 
No. 149 in our set and Prof. Macoun’s are another species. 
They are mature, not in that intermediate stage where the new 
calyptras are present with old capsules as in 151. They have the 
lids on in several cases, and the peristome of one of these freshly 
opened capsules shows the teeth united in pairs, pale white, 
almost smooth, but with a high magnification (300), the basal part 
of the teeth is granulose, and the upper segments striolate; they 
are more or less perforate and divided into three or four parts at 
apex, and the eight cilia are long and slender, with two rows of cells. 
at base. The ridges are very broad, of 6-8 rows of cells, with very - 
narrow spaces between them, and the stomata are immersed around. 
the base of the spore-sac. The neck tapers into the ochrea, and 
the seta is short. 
ORTHOTRICHUM ALPESTRE var. Sull. Icon. Suppl. 69, 4. 5z (1874). 
O. alpestre var. majus L.. & J. Man. 169 (1884). 
O. occidentale James, Expl. 40th Parallel, 402 (1871). 
Sulllivant cited Drummond’s No. 149 as this species; also 
Watson’s specimens from Utah. He says of it that it differs from 
the normal form of QO. adpestre in its greater size, glaucous green 
color, broader leaves with more reflexed margins, more elongated. 
papillz, either simple or bifurcating, and the longer and minutely 
punctulate teeth. In Limpricht’s Laubmoose I find that O- 
alpestre is described as an alpine rock species, with the teeth dis- 
tinctly striolate and perforate, united to apex, cilia 8 of two rows. 
of cells and appendiculate. Drummond’s 149 agrees very well — 
with the description, though the teeth are less distinctly striolate 
than indicated by Limpricht, but the habitat is-according to the 
label, on trees, not on rocks. ; ; 
_Watson’s Utah specimens grew on trees also, as shown by the 
