Musci Exorict. 
BRYUM DEMISSUM. 
Bryum caule perbrevi ramoso, foliis ovatis cuspidato-acu- 
minatis reticulatis, nervo excurr ente, seta rey cap- 
sula curvato-pyriformi pendula. (Tas. XCI 
Meesia demissa. Zoppe et Hornsch. MSS. 
Timmiez nov. sp. Schmidt MSS. 
Bryum curvulum. Schleicher MSS. 
Has. In monte Cenisii, supra 7000 pedum elevationem reperi, 
1814, Unicum parvulum — in summo cacumine alpis 
Wingsfield Opdalize Norvegie transalpine solummodo legit 
= A of. Schmidt. In alpibus Tyrolensibus. D. Prof. Saris 
chuch. ; 
~— 
ro 
Caules cespitosi ferrugineo-tomentosi, vix duas lineas longi, ad 
basin fastigiatim ramosi, sed, ut videtur, innovationibus pre- 
cipue. Folia flavo-viridia, basi urpurascente, arcte imbricata, 
erecta, concava, ovata, cuspidato-acuminata, margine integer- 
rima, nervo fusco, superioribus, in acumen piliforme excur- 
rente preedita, reticulata areclis oblongis, grandiusculis. Seta 
semiuncialis, crassiuscula, flexuosa, superne insigniter arcuata, 
Cons matura flavo-rufescens, oblongo- -pyriformis, curvata, 
pendula. Os minutum. Operculum conicum. Peristomii externi 
dentes 16 longiusculi, acuminati, transversim sisinti, albo- 
pellue idi, basi aurantiaca, int. cilia sepissime 
apicem connexa, atque -hic illic processubus transversalibus 
unita. Calyptram non vidi. 
. 
1 first saw this singular moss in a botanical excursion made in 
the summer of 1814, near to one of the highest summits of Mont 
Cenis. It was soon after communicated to me by the late la- 
mented Professor Schmidt asa new Timmia. I have again re- 
ceived specimens from Prof. Hornschuch under the name of Meesia 
demissa, and from M. Schleicher under that of Bryum curvulum. 
It must be allowed, however, that in point of natural habit it has 
little or no connexion either with the Timmie or Meesie ; but 
that if the figure of the internal peristome is allowed of sufficient 
importance to characterize the genus, it must be arranged with 
the former. To me its most natural place appears to be among 
some of our well known Brya. To B. cespititium it approxi- 
mates in its leaves, though they are of a laxer texture, and to 
B. Zierii in the form of its capsule. 
Fig. 1, tuft of plants, nat. size. Fig. 2, single plant. Fig. 3, 
leaf, Fig. 4, capsule. Fig. 3; operculum, Fig. 6, portion of outer 
peristome, Fig. 7, portion of | inner ditto.—magn, 
