HypnacE/E.] i8i \Plagiothecium. 



Syn. — Muscus pennatus capitulis Adianti Bobart, Ray Synops. App. 236 (1690). 



Hypnum repens fiUcifolium non ramosum, pediculis et capitulis longioribus ad radicem 

 egredientibus, foliolis uirinque duplicatis Dill. Cat. Giss. 218 (1718), et in Ray Synops. 

 3 ed. 88 (1724). 



Hypnum denticulatim pennaium, pinnulis duplicatis recurvis Dill. Hist. muse. 266, t. 34, 

 f. 5 (1741) et Herbar. 



Hypnum deniiculatum L. Sp. pi. 1 122 (1753). Huds. F1. Angl. 420 (1762). Neck. Meth. 

 muse. 154 (1771). Wither. Bot. arrang. ii, 680 (1776). Lightf. F1. Seot. ii, 741 (1777). 

 Web. Spie. fl. Goett. 44 (1778). Hoffm. Deutseh. fl. ii, 56 (1795). Hedw. Deser. iv, 81, 

 t. 31 (1797). Roth Tent. fl. Germ, iii, P. I, 264 (1800). Brid. Muse. rec. II, P. II, 52 

 (1801), Sp. muse. II, 91 (1812), Mant. 153 (1819), Bry. univ. ii, 551 (1827). Smith Fl. 

 Brit. 1288 (1804), Eng. Bot. t. 1260. Turn. Muse. Hib. 146 (1804). P. Beauv. Prodr. 63 

 (1805). ScHULTZ Fl. Starg. 313 (1806). Web. Mohr Bot. Tasch. 346 (1807). Roehl. 

 Deutseh. fl. iii, 99 (1813). Wahlenb. Fl. Lapp. 371 (1812), Fl. Carpat. 357 (1814). 

 ScHWAEG. Suppl. I, P. II, 187 (1816). Hook. Tayl. Muse. Brit. 92 (1818). Hook. Fl. 

 Scot. P. 2, 141 (1821). FuNCK Moost. 56, t. 37 (1821). Gray Nat. arrang. i, 753 (1821). 

 Hueben. Muse. Germ. 609 (1833). De Not. Syllab. 7 (1838). Rabenh. D. kr. fl. II, s. 3, 

 283 (1848). C. MuELL. Synops. ii, 251 (1851). Wils. Bry. Brit. 407 (1855). Hobk. 

 Synops. 161 (1873). Boulay Muse. Fr. 84 (1884). 



Plagiothecium deniiculatum Br. Sch. Bry. Eur, fasc. 48, p. 12, t. 8 (1851). Schimp. Synops, 

 582 (i860), 2 ed. 696. Berk. Handb. 130 (1863). Milde Bry. Siles. 320 (1869). De 

 Not. Epilogo (1869). Lesq. James Moss N. Amer. 367 (1884). Husn. Muse. Gall. 351, 

 t. loi (1893). Dix. James. Stud. Handb. 435 (l8g6). Limpr. in Rabenh. D. kr. fl. 

 Laubm. iii, 265 (1897). 



Fissidens denticulaius Leyss. Fl. hal. 264 (1783). Willd. Prod. Fl. Berol. no. 922 (1787). 



Leskea denticulaia Timm Prod. Fl. megap. no. 803 (1788). 



Pylaiscea radicans La Pyl. Journ. Bot. 1813, p. 24, t. 33, f. 2. 



Leskea hamosa Aongst. in Bot. Not. 1866, p. 102. 



Plagiothecium Gravetii Pire in Nouv, rech. bryol. fasc, 4 (1871). 



Autoicous ; in flat glossy deep green tufts. Stem prostrate, stoloni- 

 ferous, the branches erect; complanate. Leaves at base very small, 

 lanceolate, the median large ovate-oblong, pointed, decurrent, asymmetric, 

 the lower half inflexed ; nerve forked, very slender, ^ — J length of leaf ; 

 cells pointed, 12 — 14 times longer than wide, often with a serpentine 

 primordial utricle, quadrate and rectangular at angles. Inflorescence at 

 base. Perich. bracts sheathing, acutely pointed, with a long nerve ; seta 

 red ; capsule cernuous or horizontal, cylindraceous, incurved, yellowish- 

 brown, often striate when old, the lid conic apiculate. Peristome teeth 

 yellow, papillose at point, inner paler, the processes lacunose in the keel, 

 cilia 2 — 3, often imperfect. 

 Hab, — iDamp woods and rotton trunks of trees ; common. Fr. 5 — 7. 



Van /3. Aptychus Spruce. 



Leaves ovato-lanceolate, apiculate, decurved and subsecund ; nerves short, 

 margin scarcely reflexed below, cells very narrow ; capsule shorter oblongo-cylindric, 

 not striate ; neck not distinct, lid short and conical. 



Plagiothecium. deniiculatum, subsp. Aptychus Spruce in Journ. Bot. 1880, p. 355, 

 Plagiothecium nitellum Wils. MSS. 



