Muse Exoric:t.—Humboldtiani. 
HEDWIGIA HUMBOLDTII. 
Hedwigia caule erecto, pinnatim famoso, foliis undique 
imbricatis obovatis concavis enervibus piliferis integer- 
rimis, capsula globosa sulcata, operculo subulato cur- 
vato. (Tas. CXXXVII.) 
Has. In monte Quindiu, locis frigidis, altit, 1580 hexapod. 
Humboldt et Bonpland. 
Caules 3-6-unciales, erecti, flexuosi, ramosi, ramis pinnatis, 
pinnis approximatis patentibus vel decurvis, uncialibus, tere- 
tibus, basi apiceque attenuatis. Folia undique imbricata, 
densa, erecta, appressa, concava, obovata, integerrima, ener- 
via, margine inferiore recurvo, apice in acumen longum pili- 
forme flexuosum, fuscum, rigidum desinentia. Color obscure 
viridis, basi aurantiacus. Perichetialia fere omnino ut in re- 
liquis sed magis aurantiaca. Seéa lateralis, uncialis, rufo-fusca. 
Capsula erecta, globosa, rufo-fusca, sulcata siccitate precipue. 
Calyptra dimidiata. Operculum rostro capsula sub-breviore, 
oblique curvato, 
7 ee 
The present highly curious Moss, which, no less on account of 
its beauty than of its characters so different from every other in 
the family, is worthy of bearing the name of the most illustrious 
traveller and philosopher of the age, has in its mode of growth 
the appearance of a Sphagnum, in its capsule that of a Bartra- 
mia, and in its general habit that of a Hypnum. The capsule, 
however, destitute of a peristome, and the lateral situation of 
the fructification, require that it should be arranged with the 
Hedwigia, according to the ideas of the genus expressed in the 
Muscologia Britannica. The leaves, in their texture and in the 
absence of a nerve, are not very unlike those of Anictangium ci- 
liatum and imberle. 
Fig.1, plant, nat. size. Fig. 2, portion of the stem and fruc- 
tification. Fig. 3, leaves. Fig. 4, perichetial leaves. Fig. 5, cap- 
sule. Fig. 6, operculum. Fig. 7, calyptra.—magn. 
Von, I, 
