Musci Exoric:.—Hornschuchians. 
WEISSIA ELONGATA., 
Weissia caule densissime czspitoso elongato ramoso, 
foliis arcte imbricatis lanceolato-ovatis obtusis reticus 
latis integerrimis, nervo sub summo apice evahe- 
scente, seta flexuosa, superne arcuata, capsula ovata 
(ob directionem setz) inclinata yel pendula, operculo 
conico. (Tas. CII.) 
Weissia elongata. Hoppe et Hornschuch MSS. 
Has. In valle Grosarl in alpibus Salisburgensibus legit CU. 
Hornschuch. 
Caules bi- ad 4-unciales in cespitibus densissime compacti, elon- 
gati, graciles, filiformes, flexuosi, parum ramosi. Folia undi- 
que imbricata, Ke SyErese aes concava, late lanceo- 
lato-ovata, areolis reticulata, flavo-viridia, 
inferiora fusco-nigrescentia, margine vix serrata, nervo satis 
valido sub summo apice evanescente instructa. Periche- 
tialia, exteriora caulinis similia, interiora lanceolata, nervo 
obscuriore. Seta flavescens, terminalis flexuosus, superne ut 
eygni collum curvata. Capsula secundum sete curvaturam in- 
clinata vel pendula, ovata, pallide fusco-viridis. Operculum 
conicum, obtusum, flavum. Peristomium e dentibus 16 sub- 
distantibus pallide lavescentibus longiusculis attenuatis trans- 
versim striatis, 
nn 
This is another new Moss discovered by Professor Hornschuch, 
differing in so many respects from any other known moss, that it 
is hard to say to which it approaches the nearest. ‘The stems 
and foliage most resemble small specimens of Bryum julaceum ; 
but the fructification is very remarkable, having the fruitstalk 
eurved below the capsule, like the neck of a swan, and the capsule 
either inclined or pendent according to the degree of curvature. 
Fig. 1, 1, tufts of plants, nat. size. Fig. 2, single plant. Fig.3, 
leaf. Fig. 4, outer, and Fig. 5, inner perichetial leaf. Fig. 6, 
mouth of the capsule and peristome. Fig. 7, teeth of the pe- 
ristome,—magn, 
