MUSCI PRETERITI. 13 
lower leaves have a red, the upper a yellowish, border. On some 
stems the leaves are here and there longer, forming a coma— 
siebably a sterile 2 flower, sa containing no genitals. (Terminal 
gemmiform ¢ flowers have since been found, but no fruit to this 
The comparative anatomy of mosses, especially as to the 
correlation of leaf-structure to fructification, had at that time — 
only imperfectly studied, and my own knowledge of it was 
slight. It was therefore with great diffidence ‘hat I pablsnad 
specimens in fn exsiccata under the name of Encalypta ? ligulata, 
n.sp.; the broadly-marginate leaves —— to approach it, though 
very remotely, iis Encalypta commutata, Nee 
eaving for a while the further sani hace of its affinities, 
I must take my readers with me to the Andes of South America 
about 14 degrees south of the equator, and at an asap tte of a 
little over 5000 English feet, where the river Pastas of the 
northern feeders of the Amazon, and already become a BEE hee 7 
stream, rushes along a deep valley (the Gorge of Banos) at the 
northern base of the voleano Tunguragua, and at the cataract of 
Agoyan plunges down a cavernous cliff into a deep lake-like basin, 
bordered on each ne pike walls and fallen blocks of mica-schist— 
richly. clad with ; and thence emerging resumes its 
fume aliens course, "which " scarcely slackens until reaching the 
great Amazonian plain. 
I explored the environs of this cataract pretty thoroughly in 
July and Angue, 1857, and on some of the mossy blocks I found 
It was a taller, firmer plant,—scarcely at all fragile,—and the lower 
(or inner) portion of the tufts was of a brownish black, and not the 
vinous tint of EF. ligulata; but that it differed any otherwise, with 
ony memory to aid me, I could not venture to affirm. e capsule 
was gymnostomous, and, ‘aloe in conjunction with the strap- or 
tongue-shaped foliage, reminded me much of pias mosses . ha 
There was no @ priori reason why the Pyrenean and the Andine 
moss should not be specifically the same, since it has been 
: a 
Jungermania hyalina, Hook., grew on rocks moistened by spray from 
the Falls of Agoyan, exactly as it does in similar sites in Europe. 
. Bryum filiform: Dicks. (= Br. julaceum, Sm.) abounded by the 
Pastasa a few miles lower down, and fruited far more lux ahaally 
than it usually does in the British Isles ; a Tortula (Didymodon) 
brachydontia, Bruch., grew a little above e falls; while Hypnum 
rusciforme, Neck., var. (=H. wits ect covered half- 
