HYPNACE*.] i*> \_Plagiothecium. 



ovate, acute, transversely undulate, faintly two-nerved to \ length. Capsule 

 subcylindric, cernuous, longitudinally striate when dry; lid rostellate. 

 (T. CXVI, E.) 



SYN. Muscus ttrrestris repetts, Lycopodii ferme facie Doody, RAY Syn. stirp. Brit. 2 ed. app. 337 

 (1696). 



Hypnum repens crispum cauliculis compressis, Lycopodii in morem per terram starsis DILL. 

 in RAY Synops. 3 ed. 88 (1724). 



Hypnum pennatum undulatum, Lycopodii instar sparsum DILL. Hist. muse. 271, t. 36, f. 11 

 (1741) et Herb. 



Hypnum undulatum L. Sp. plant. 1124 0753> HUDS. Fl. Angl. 420 (1762). NECK. Meth. 

 muse. 156 (1771). WITHER. Bot. arrang. ii, 682 (1776). LIGHTF. Fl. Scot, ii, 744 (1777)- 

 WEB. Spic. Fl. goett. 55 (1778). ROTH Tent. Fl. Germ, i, 465 (1788). HOFFM. Deutsch. 

 fl. ii, 57 (1795). SWARTZ Muse. Suec. 63 (1799). HEDW. Sp. muse. 242 (1801). BRID. 

 Muse. rec. II, P. 11,99 (1801), Sp. muse. II, 99 (1812), Mant. 156 (1819), Bry. univ.ii, 397 

 (1827). SMITH Fl. Brit. 1294 (1804), Eng. Bot. t. 1181. TURN. Muse. Hib. 154 (1804). 

 P. BEAUV. Prodr. 72 (1805). WEB. MOHR Bot. Tasch. 348 (1807). WAHLEN. Fl. Lapp. 

 172 (1812). ROEHL. Deutsch. fl. iii, 100 (1813). SCHWAEG. Suppl. I, P. II, 197 (1816), 

 et III, P. II, t. 282 (1829). HOOK. TAYL. Muse. Brit. 92 (1818). FUNCK. Moost. 56, t. 37 

 (1821). GRAY Nat. arrang. i, 753 (1821). HOOK. Fl Scot. P. 2, 141 (1821). HUEBEN. 

 Muse. germ. 606 (1833). DE NOT. Syllab. 3 (1838). RABENH. D. kr. fl. II, s. 3, 284 

 (1848). C. MUELL. Synops. ii, 257 (1851). WILS. Bry. Brit. 405 (1855). HOBK. Synops. 

 162 (1873). BOULAY Muse. Fr. 83 (1884). 



Plagiotheciutn undulatum BR. Sen. Bry. Eur. fasc. 48, p. 17, t. 13 (1851). SCHIMP. Synops. 

 586 (1860), 2 ed. 701. BERK. Handb. 132 (1863). DE NOT. Epilogo 186 (1869). MILDE 

 Bry. Siles. 318 (1869). LESQ. JAMES Moss. N. Amer. 369 (1884). HUSN. Muse. Gall. 

 353, t. 101 (1893). Dix. JAMES. Stud. Handb. 438 (1896). LIMPR. in RABENH. D. kr. 

 fl. Laubm. iii, 253 (1897). 



Stereodon undulatus MITT. Journ. Linn. Soc. viii, 39 (1864). 



Dioicous ; in spreading lax whitish-green tufts. Stem creeping, 

 prostrate, with few branches, both complanate. Leaves dense, imbricated, 

 the lateral rows unsymmetric, ovate acute, narrow at base, transversely 

 undulate, the anterior and posterior symmetric ; nerves two, unequal, 

 i length of leaf; cells narrow, hexagonal, at basal angles rectangular. 

 Perich. bracts recurved, inner longly sheathing, narrowed into a long 

 apiculus ; seta purple ; capsule cernuous, cylindraceous, curved, brownish- 

 yellow, furrowed when dry, narrowed below mouth ; lid large, rostrate. 

 Teeth of peristome yellow, long, densely jointed ; inner white, processes 

 perforated, cilia 23. 



HAB. Moist banks in woods ; not uncommon. Fr. 56. 



4- PLAQIOTHECIUM DENTICULATUM (Z.) Br. Sch. 

 Autoicous ; in flat soft bright green patches, shining. Stem prostrate, 

 sparingly branched, the branches subfasciculate, complanate. Leaves 

 >liquely ovate, acuminate, with two short nerves, margin reflexed at 

 ise. Capsule oblong, lid conical acute. (T. CXVI I, D.) 



