Hypnace^.j 94 [Hypnum. 



Hypnum ruscifolium Neck. Act. acad. theod.-palat. ii, 453 (1770), Meth. muse. 181 (1771.) 

 Wither. Bot. arrang. ii, 683 (1776). Sieth. F1. oxon. 297 (1794). Abbot F1. Bedf. 

 246 (1798). HuLE Br. Fl. P. 2, 269 (1799). Smith F1. Brit, iii, 1292 (1804). Eng. 

 Bot. t. 1275. Turn. Muse. hib. 153 (1804). Mart. FI. cr. Erl. 21 (1817). Hook. 

 Tayl. Muse. Br. 106 (1818). Hook. Fl. scot. P. 2, 145 (1821). Gray Nat. arrang. i, 

 761 (182 1). Voit in Sturm Deutseh. Fl. II. fase. 13. Hueben. Muse. germ. 626 

 (1833). Rabenh. D. kr. fl. II, S. 3, 626 (1848). WiLS. Bry. brit. 354 (1855). Berk. 

 Handb. 92 (1863). Hobk. Synops. 159 (1873). 



Hypnum aquaticum Pollich PI. Palat. 11. 1026 (1777). 



Hypnum riparioides Hedw. Descr. iv, 10, t. 4 (1793), Sp. muse. 242 (i8oi). Roth Fl. 

 germ, iii, P. i, 321 (1800). Web. Mohr Bot. Taseh. 326 (1807). Voit Muse, herbip. 

 loi (1812). RoEHL. Deutseh. fl. iii, 100 {1813). Schwaeg. Suppl. I, P. II, 195 (1816). 

 Fukck Moost. 56, t. 38 (1821). 



Hypnum rivulare Ehrh. PI. crypt. .1. 252 (1793). Hoffm. Deutseh. fl. ii, 78 (1795). 



Rhynchostegiutn rusciforme Br. Sch. Bry. eur. fase. 49-51, p. 11, t. 9 (1852). Schimp. 

 Synops. 572 (i860), 2 ed. 686. De Not. Epilogo 71 (1869). Hobk. Synops. 2 ed. 208 

 (1884). Limpr. in Rabenh. D. kr. fl. Laubm. iii, 230 (1897). 



Eurhynchium rusciforme Milde Bry. siles. 312 (i86g). Husnot Muse. gall. 346, t. 100 

 (1893). Dix. James. Stud. Handb. 426 (1896). 



Autoicous ; in lax tufts, decumbent or floating, rigid, dark green 

 and glossy. Stem bare of leaves at base, with many small-leaved 

 stolons and long ascending arched branches. Lowest leaves distant, 

 ovate, recurved, long-pointed and nerveless. Stem-leaves erecto- 

 patent, from a narrow decurrent base, ovate, gradually pointed or 

 bluntish, flat at margin and serrated, nerve strong, vanishing below 

 apex ; cells chlorophyllose, at base and angles bistratose, hexagono- 

 rectangular, above long and fusiform. Perichastial bracts ovate, 

 sheathing at base, divergent, inner with long points, nerveless; seta 

 purple, smooth ; capsule with a distinct neck, ovate cernuous ; lid conic 

 with a strong beak, annulus of two rows of cells; peristome rufous, 

 paler at points, papillose, inner yellow. 



Hab. — On stones in streams, common. Fr. 11. 



Var. p. Atlanticum Bridel. 



Stems elongated, branches bent downward, arcuate ; leaves large 

 somewhat secund, with short points or obtuse, cells elongated. 



Svx. — Hypnum Atlanticum Brid. Muse. ree. II, P. II, 121, t. 4. 

 H. rusciforme 8. Atlanticum Brid. Bry. univ. ii, 499. 



Rhynchostegium rusciforme yS. Atlanticum Bry. eur. I.e. t. 10, fig. yS. i — 2, 4 — S. 

 Ditto B, lutcscens Schimp. Synops. 2 ed. 687. 



Hab. — By waterfalls and in mountain streams. 



Var. y. immdatum Brid. Bry. univ. ii, 500. 



