14 MUSCl-ACROCARPI-PERISTOMI. [Splachnum. 



9. Tetraphis. Hedw. Tetraphis. 



Seta terminal. Peristome single, of four equidistant, erect 

 teeth. Calyptra mitriform, furrowed. (Muse. Brit. ed. 2. p. 32. 

 t. 1.). — Named from nrgx, and probably (paXog, in allusion to the 

 four teeth or prominences at the mouth of the capsule. 



1. T. pellucida, Hedw. (pellucid Tetraphis); stems elongated, 

 leaves ovate acuminated, those of the perichsetium lanceolate, 

 capsule cylindrical. Hedw. Sp. Muse. t. 7. f. 1. E. Bot. t. 1020. 

 Hook. inFl. Loud. N. S. cum Ic. Muse. Brit. p. 33. t. 8. 



Generally found on decaying trunks of trees, sometimes on the ground, 

 and mostly in hilly or subalpine countries. Fr. Spring. — Plant of a 

 pale yellow-green colour and rigid habit, the roots densely tufted. 

 Besides the male and female fructification (usually so called), there are 

 plants terminated by cup-shaped receptacles, consisting of broadly- obcor- 

 date leaves, in the centre of which are fixed by a short foot-stalk, small 

 spherical bodies, exactly resembling the anthers of a Jungermannia. 



2. T. Browniana, Grew (Mr. Browns Tetraphis); steins 

 very short, leaves few linear slightly incrassated upwards, those 

 of the perichsetium ovate obtuse, capsule ovate. Grev. Fl. Edin. 

 p. 230. Scot. Or. Fl. t. 169. Drum. Muse. Scot. v. 2. n. 13. 

 Muse. Brit. ed. 2. p. 33. t 8.— T. ovata, Muse. Brit. ed. 1. 

 Hook. Fl. Lond. N. S. cum Ic. — Tetrodontium Brownianum, 

 Schwaegr. Suppl. v. 2. t. 129. — Bryum Brownianum, Dicks. Cr. 

 Fasc. 4. t. 10./. 16. — Orthotrichum Brownianum, Fl. Brit. p. 

 1269 Grimmia Browniana, E. Bot. t. 1422. 



Rocks, particularly of sandstone, in several parts of England, Scot- 

 land and Ireland. Fr. Spring. — A minute moss, of a rigid habit and 

 deep-brown colour, differing indeed in habit from the preceding, as well 

 as in its place of growth. The T. ovata of Hoppe is supposed by 

 some to be the same species as the present, which, when growing on 

 granite, is occasionally seen without the linear leaves. 



10. Splachnum. Linn. Splachnum. 



Seta terminal. Peristome single, of 8 double or sometimes 

 16 geminate teeth mostly reflexed when dry. Capsule with an 

 evident apophysis. Calyptra mitriform, at length subdimi- 

 diate, glabrous, without furrows. (3Iusc. Brit, t. 1.) — Named 

 from the Greek SirXecyyyov, of Dioscorides, applied to some 

 Lichen or other Cryptogamic plant. — This is a genus, no less 

 elegant in the form and colour, than remarkable for the places 

 of growth of the greater number of its species, namely on the 

 dung of animals or on other animal substance, as bones, decayed 

 woollen stockings, and hats. 



* Leaves acuminate. 



1. S. spheericum, Linn. fil. (globe-fruited Splachnum); leaves 

 obovato-rotundate acuminate slightly serrated, apophysis ovato- 

 globose wider than the capsule. Linn. fil. Meth. Muse, t \.f. 1. 



