SPLACHNACE^.] in [Tetraplodon. 



This moss varies very much in size, and in the width and serration of 

 the leaves, and sometimes the filiform seta attains a length of 7 inches. 

 The difference between the typical form and the variety lies in the hypophysis, 

 which is more elongated in the former. Dickson's S. ovatum is represented 

 on fig. 2A. 



2. TETRAPLODON Br. Sch. 



Bry. eur. fasc. 2324 (1844). 



Densely caespitoso-pulvinate, interwoven below with radicular 

 tomentum. Leaves elongate-lane, or ovate-oblong, running out into a 

 subulate point. Calyptra conico-cucullate, then cleft to middle ; caps, 

 oval-cylindric, solid, with a thicker obconic solid hypophysis of same 

 colour ; teeth shorter, conjoined in fours, solid, finally geminate, reflexed 

 when dry, columella not exserted. Der. rcrpaTrXovs fourfold, oSovs a 

 tooth. 



This small genus of 4 species differs from Splachnum principally in the 

 fruit, the capsule and hypophysis being of the same colour and consistence, 

 and the latter not inflated. 



CLAVIS TO THE SPECIES. 



Seta elongated ; leaves entire. bryoides. 

 very short; leaves serrated. angnstatiis. 



i. TETRAPLODON BRYOIDES (Zoega) Lindb. 



Autoicous ; leaves obvate, suddenly attenuated into a long point, 

 entire. Caps, on a long seta, oval, blackish, with an obovate hypo- 

 physis; lid conic, obtuse. (T. LXII, A.) 



SYN. Splachnum bryoides ZOEGA in OLAFS. et Pov. Reis. Island ii, 12 (1772). 



Splachnum mnioides SWARTZ Meth. muse. 26 (1781), Nova act. Upsal. iv, 241 (1784), 



Muse. suec. 23. DICKS. Fasc. pi. cr. I, 2 (1785). HEDW. Muse. fr. ii, 36, t. n (1788), 



Sp. muse. 51. SCHRANK Baiers. fl. ii, 440 (1789). WITH. Bot. arr. 3 ed. Hi, 793 (1796). 



BRID. Muse. rec. II, P. I, 103 (1798), Sp. muse. I, 142 (1806), Mant. 104 (1819), Bry. 



univ. i, 240 (1826). HULL Br. fl. P. 2, 246 (1799)- SM. Fl. brit. 1169 (1804), Eng. Bot. 



t. 1589. P. BEAUV. Prodr. 89 (1805). WEB. MOHR Bot. Tasch. 103 (1807). SCHKUHR 



Deutsch. kr. gew. P. II, 42, t. 18 (1810). SCHWAEG. Suppl. I, P. I, 48 (1811). HOOK. 



TAYL. Muse. br. 20, t. 9 (1818). HOOK. Fl. scot. P. 2, 124 (1821), Br. fl. ii, 15 (1833). 



GRAY Nat. arr. br. pi. i, 718 (1821). HUEB. Muse. germ. 83 (1833). MACK. fl. hib. 



P. 2, 13 (1836). 

 Splachnum urceolatum (non BR. SCH.) HEDW. St. cr. ii, 39, t. 13 (1788). DICKS. PI. crypt. 



Fasc. II, 2 (1790). SM. Fl. brit. 1170; Eng. Bot. 1.2417. BRID. WITH. HULL. 



WAHLENB. Fl. lapp. 309 (1812), Fl. carp. 335 (1814). 

 Splachnum purpureum WITH. Bot. arr. 3 ed. iii, 794. 

 S. arcticum, propinquum, exsertum and paradoxum R. BR. in App. to Parry's ist. voy. 



p. 301 (1824). 

 S. Adamsianum SCHWAEG. Suppl. II, P. II, t. 178 (1826). 



