HypnACE^.] i8o \Plagiothecium. 



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

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

 (T. CXVI, E.) 



Syn. — Muscus terrestris repens, Lycopodii ferme fade Doody, Ray Syn. stirp. Brit. 2 ed. app. 337 

 (1696). 



Hypnum repots crispum cauliculis compressis, Lycopodii in morem per terram sparsis Dill. 

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



Hypnum pennatunt undu/aium, Lycopodii instar sparsum Dill. HisL muse. 271, t. 36, f. II 

 (1 741) et Herb. 



//y^um unt/H&i/um L. Sp. plant. 1124 (1753). Hods. Fl. Angl. 420 (1762). Neck. Meth. 

 muse 156 (1771). Wither. BoL arrang. ii, 682 (1776). Lightf. Fl. Scot, ii, 744 (1777). 

 Web. Spic. Fl.goett. 5S (1778). Roth Tent. Fl. Germ, i, 465 (1788). Hoffm. Deutsch. 

 fl. ii, 57 (179s). SwARTZ Muse. Suee. 63 (1799). Hedw. Sp. muse. 242 (1801). Brid. 

 Muse. rec. U, P. n,99 (1801), Sp. muse. II, 99 (l8l2),Mant. 156 (1819), Bry. univ.ii, 397 

 (1827). Smith Fl. Brit 1294 (1804), Eng. BoL t. 1181. Turn. Muse. Hib. 154 (1804). 

 P. Beauv. Prodr. 72 (1805). Web. Mohr Bot. Taseh. 348 (1807). Wahlen. Fl. Lapp. 

 172 (1812). RoEHL. Deutseh. fl. iii, 100 (1813). Schwaeg. SuppL 1, P. II, 197 (1816), 

 et HI, P. II, t 282 (1829). Hook. Tayl. Muse. Brit. 92 (1818). Fhnck. 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. MuEU, Synops. ii, 257 (1851). WiLS. Bry. Brit. 405 (1855). Hobk. Synops. 

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



Plagiothecium undulatum Br. Sch. Bry. Eur. fese. 48, p. 17, t. 13 (1851). Schimp. Synops. 

 586 (i860), 2 ed. 701. Berk. Handb. 132 (1863). De Not. Epilogo 186 (1869). Milde 

 Bry. Siles. 3x8 (1869). Lesq. James Moss. N. Amer. 369 (1884). HosN. Husc. GalL 

 353, t. loi (1893). Dix. James. Stud. Handb. 438 (1896). Limpr. in Rabenh. D. kr. 

 fl. Laubm. iii, 253 (1897). 



Stereodon unduhtus Mitt. Joum. 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, 

 \ 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 2 — 3. 



Hab. — Moist banks in woods ; not uncommon. Fr. 5 — 6. 



4. PLAGIOTHECnJM DEIJTICULATXJM (Z.) £r. Sch. 



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

 sparingly branched, the branches subfasciculate, complanate. Leaves 

 obliquely ovate, acuminate, with two short nerves, margin reflexed at 

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



