Muscr Exortic1.—Aunboldtiant. 
GRIMMIA FONTINALOIDES. 
Grimmia, caule elongato ramoso fluitante, foliis ob- 
longo-ovatis acutis serratis, capsula ovata immersa, 
operculo plano-mammillato. (Tas. II.) 
Has. In ripa fluminis Brinoci inter Atures et San Fernando, in 
arboribus quarum radices aquis obtecte sunt. Barba de palo 
Hispanis nuncupatur. Humboldt et Bonpland. 
Caules fasciculati, spithamei ad dodrantales, flexuosi, foliis de- 
stituti, ramosi, rami plerumque breves, clavati, quandoque in- 
novationibus elongatis (f. 2). Folia (f. 3) dense imbricata, 
ti subflexuosa , oblongo ovata, parum concava, acuta, 
apice serrata, pallide fusco-viridia. Perichetialia (f. 4, 5, 8) 
reliquis minora, strictiora, magisque dense imbricata. Seta 
vix ulla. Capsula (f. 5) minuta, foliis brevior, ovata vel tur- 
binata, erecta. Operculum (f. 6) planum, centro umbonato. 
Peristomium (f. 7) 16-dentatum, dentibus re ics plus mi- 
nusve fissis, pallide fuscis. 
This singular species of Grimmia has much the habit, as it 
has the mode of growth, of Cinclidotus_fontinaloides, or of some 
species of Fontinalis in an injured state. There are no leaves, 
nor the appearance of there having been any on the main stems, 
whilst the short lateral branches are thickly terminated by them. 
These leaves are moreover very thin and membranaceous. The 
capsule is very small in proportion to the plant, and quite con- 
cealed by the perichztial leaves. The teeth are much curved in- 
wards, pale coloured, obtuse, and jagged or cleft, like Grimmia 
ovata, 
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