HYPNACE^.] 49 [Ambfysttgium. 



Dull yellow -green, rigid, erect, irregularly pinnate with very short 

 branches. Leaves ovato-lanceolate, acute dimorphous, auricles of large 

 hyaline cells, upper very short dense and opake. 



SYN. Hypnum fluitans exannulatum acutum assimile SANIO Beschreib. 12. 

 HAD. Ben Lawers (Hunt 1865, Holt 1880) ! ! 

 Var e. brachydictyon Renault. 



Plants green, pinnate, the upper leaves short, firm, feebly secund, oval 

 at base, often slightly sulcate, ending in a broad short acumen ; nerve stout, 

 middle cells short, oblong-sublinear, those of the large auricles numerous, 

 dilated. 



SYN. Hypnum fluiians 0- alpinum RENAULD in Rev. bryol. 1881, p. 78. 



Hyp. fluitans Var. brachydictyon RENAULD in HUSN. Muse. gall. 385. 



HAB. Quiraing, Skye $ (Dixon 1893) ' 



This moss is indeed very close to H. fluitans, and except the dioicous 

 position of the inflorescence, and the different form and structure of the 

 leaf-base, it would have to be united with the latter. A great many varieties 

 and forms have been placed under each, the number of which will no doubt 

 be extended by the attention of collectors. The variety brachydictyon is well 

 marked and an interesting addition to our Flora. 



29. AMBLYSTEGIUM FLUITANS (L.) De Not. 



Autoicous; lax, submersed, pinnate. Leaves lanceolate, not 

 sulcate, longly acuminate, slightly falcate towards summit, basal 

 angular cells hyaline inflated. Capsule oblong, incurved. (T, XCIV, C.) 



SYN. Hypnum fluitans, foliis tenuissimis, capsulis exilibus DILL. Hist. muse. 546, t. 83, f. 7, 

 (1741), et Herbar. 



Hypnum fluitans L. Fl. suec. 2 ed. 399 (1752). WEISS Cr. Goett. 226 (1770). NECK. 

 Meth. muse. 285 (1771). WITHER. Bot. Arr. ii, 683 (1776). RELHAN Fl. cant. Suppl. 

 20 (1786). ROTH Fl. germ, i, 466 (1788). SIBTH. Fl. oxon. 298 (1794). HOFFM. 

 Deutsch. Fl. ii, 78 (1795). HEDW. Muse. fr. iv, 94, t. 36 (1797), Sp. muse. 296 (1801). 

 HULL Brit. Fl. P. 2, 270 (1799). SWARTZ Muse. suec. 57 (1799). BRID. Muse. rec. II, P. II, 

 182 (1801), Sp. muse. II, 224 (1812), Mant. 180 (1819), Bry. univ. ii, 626 (1827). SMITH 

 Fl. brit. 1319 (1804), Eng. Bot. t. 1448. TURN. Muse. hib. 182 (1804). P. BEAUV. 

 Prodr. 64 (1805). SCHULTZ Fl. starg. 337 (1806). WEB. MOHR Bot. Tasch. 358 (1807). 

 WAHLENB. Fl. lapp. 378 (1812). SCHWAEG. Suppl. I, P. II, 304 (1816). MART. Fl. cr. 

 erl. 39 (1817). HOOK. TAYL. Muse. br. 98 (1818). HOOK. Fl. Scot. P. 2, 147 (1821), 

 Br. Flora ii, 93 (1833). FUNCK Moost. 67, t. 53 (1821). GRAY Nat. arr. i, 756 (1821). 

 HUEBEN. Muse. germ. 696 (1833). DE NOT. Syllab. 52 (1838). RABENH. D. kr. fl, II, 

 S. 3, 268 (1848). C. MUELL. Synops. ii, 323 (1851). BR. SCH. Bry. eur. fasc. 5761, 

 p. 33, t. 22 (1854). WILS. Bry. brit. 387 (1855). SCHIMP. Synops. 609 (1860), 2 ed. 734. 

 BERK. Handb. br. m. 118, t. 10 (1863). MILDE Bry. siles. 348 (1869). HOBK. Synops. 

 169 (1873). BOULAY Muse. Fr. 62 (1884). LESQ. JAMES Moss. N. Amer. 383 (1884). 

 RENAULD in HUSN. Muse. gall. 379 (1894). Dix. JAMES. Stud. Handb. 461 (1896). 



Amblystegium fluitans DE NOT. Epilogo 143 (1869). 



