Musci Exotici1.—Humboldtiani. 
DICRANUM VAGINATUM. 
Dicranum caule elongato ramoso, foliis laxis a basi longe 
vaginante subulatis vix apice serratis, nervo excurrente, 
capsula inclinata ovata absque struma, operculo longe 
subulato. (Tas. CXLI.) 
Has. In convallibus Andium Granatensium inter Almaguar et 
Pasto, altit. 1200—1500 hexapod. Humboldt ct Bonpland. 
Caules laxe cespitosi, fusco-tomentosi, bi- tri- ad 4-unciales, 
erecti, filiformes, flexuosi, bis terve dichotomi. Folia lurido-vi- 
ridia, laxe imbricata, e basi lanceolata, undulata vaginante, 
subulata apice parum recurva, vix serrulata, nervo angusto in 
acumen longum producto. Seéa terminalis, uncialis. Capsula 
erecta vel paululum inclinata, rufo-fusca, struma nulla. Oper- 
culum longe rostratum, curvatum. Calypéra dimidiata, pal- 
lide fusca. Peristomium rubrum, e dentibus 16, infra basin 
fissis, marginibus hispidis. 
I know of no species of the genus with the leaves so remark- 
ably sheathing in their lower half, and so subulate in the upper, 
as is the case with the present. : 
Fig. 1,1, plants, mat. size. Fig. 2, portion of a plant with 
young fructification, Fig 3 and 4, leaves. Fig. 5, capsule. Fig.6, 
operculum, Fig. 7, calyptra. Fig. 8, teeth of the peristome, 
—magn. 
