Musci Exorict. 
TORTULA PILIFERA, 
Tortula, caule elongato valde ramoso, foliis lanceolatis 
margine revolutis, nervo in pilum longum desinente,. 
perichetialibus vaginantibus, capsula_ cylindraeea, 
operculo subulato. (Tas. XII.) 
Ex Java a Dicksono recepi. 
Caulis uncialis vel biuncialis, erectus, valde ramosus ; ramis di- 
chotomis, interruptim foliosis. Folia sordide viridia, undique 
Sparsa, erecto-patentia, lanceolata, integerrima, margine in- 
signiter revoluta, nervo ultra apicem in pilum longum dia- 
phanum producto instructa. Pericheetialia sete basin arcte 
Vaginantia, ovato-attenuata, nervo pereursa, ivf. multo ma-_ 
jora, longiora. Seta uncialis, flexuosa, rufo-flavescens, per in- 
novationes caulis lateralis, Capsula cylindracea, ameene fusca. 
Operculum subulatum, capsula brevius. Peristominm longum, 
€ ciliis spiraliter tortis, ad basin divisis, rubris, 
This fine Tortula has, like T. convoluta and T. revoluta, the 
perichetial leaves differing remarkably from the rest in figure, 
and sheathing the base of the fruitstalk, With the last-men- 
tioned species, too, it agrees in having leaves with revolute mar- 
gins; but here, besides the much larger and branched stems of 
the plant, the leaves have a long hairlike point, which is a con- 
tinuation of the nerve, 
Fig. 1, plants nat. size. Fig. 2, perichetium, fruitstalk, 
capsule, and operculum, Fig. 3, upper side of a leaf, Fig. 4, 
inferior side of ditto. Fig. 5, outer perichetial leaf, F ig. 6, 
inner ditto, Fig. 7, capsule with its peristome—magn, 
