Muse Exortici.—AHumboldtiani. 
LEUCODON TOMENTOSUS., 
Leucodon caule subrepente densissime tomentoso, ramis 
erectis, foliis undigque imbricatis erectis lanceolatis 
plicatis, basi nervo obsoleto, apice acumine pili- 
formi serrulato, capsulis erectis ovato-cylindraceis. 
(Tas. XXXVII.) 
Has, In sylvis Cinchonz prope Loxam, regione temperata, altit. 
1080 hexapod. Humboldt et Bonpland. 
Caulis subrepens, tomento ferrugineo densissime obsitus, ramis 
erectis basi ferrugineo tomentosis, apice foliosis. Folia undi- 
que imbricata, erecta, flavescentia, nitida, lanceolata, longitu- 
dinaliter plicata, basi obsolete uninervia, apice in acumen 
longum, piliforme, eeege serrulatum desinentia. Peri- 
cheeiialia ovato-acuminata, enervia. Seta lateralis, subunci- 
alis. Capsula sina erecta. Calyptra dimidiata. 
Peristomium e membrana, dentes sedecim filiformes, flavi, ad 
basin fere fissi, segmentis erectis. 
This plant in its bright and upright foliage is not much unlike 
Neckera trichophylia of Swartz (Hypn., Hedw.) ; but the peri- 
Stome is very remarkable: and were it not for the membrane 
from which the peristome rises (exactly as in the inner fringe of 
Neckera and FAlypnum), it would very satisfactorily accord with 
the genus Leucodon, where it may, at least for the present, be 
allowed to remain. I can in no instance find a double peristome, 
nor the least appearance of its having existed on any one of the 
many capsules which I possess. But it must be observed that I 
have not had the opportunity of examining a capsule upon which 
the operculum was found. 
Fig. 1, 1, plants nat. size. Fig. 2, leaf. Fig. 3, point of 
ditto. Sie. 4, perichetial leaf. Fig. 5, perichatium. Fig. 6, 
capsule and peristome. Fig. 7, teeth of peristome. Me 8, ca- 
lyptra.—magn, 
