79 [OrtJiotrichum. 



10. ORTHOTRICHUM ANOMALUM. Hedw. 



Autiocous; in dense dark olive-green tufts. Leaves spreading, lance- 

 olate, acute. Caps, exserted, oval-cylindric, with 16 ridges, the alternate 

 ones fainter, teeth 16, equi-distant ; calyptra conic-companulate, hairy. 

 (T. LVII, A.) 



SYN. Orthotrichum anomalum HEDW. Muse. fr. ii, 102, t. 37 (1788), Sp. muse. 162. WEB. 



MOHR Bot. Tasch. 229 (1807). VOIT Muse. herb. 66 (1812). STURM Deutsch. fl. II, 13. 



WAHLENB. Fl. lapp. 366, (3., Fl. carp. 354. SCHWAEG. Suppl. I, P. II, 37 (1816). 



HARTM. Skand. fl. HUEBEN. Muse. germ. 379 (1833). BR. SCH. Bry. eur. fasc. 2 3, 



p. 10, t. 3 (1837). DE NoT - s y llab - X 49 ( l8 3 8 ). Epil. bri. ital. 298 (1869). RABENH. 



Deutsch. kr. fl. ii, S. 3, 177 (1848). C. MUELL. Synops. i, 694 (1849). HAMMAR Mon. 



Orth. suec. 21 (1852). SCHIMP. Synops. 262 (1860), 2 ed. 308. WOOD in Phytologist 



1860, p. 353. MILDE Bry. siles. 171 (1869). BOULAY Fl. cr. de 1'Est 619 (1872). HOBK. 



Syn. br. m. 95 (1873). HUSN. Mouss. nord-ouest 105 (1873). JURATZ. Laubm. oester.- 



ung. 212 (1882). LESQ. JAMES Moss. N. Amer. 164 (1884). VENT, in HUSN. Muse. 



gall. 158, t. 44 (1887). 



Weissia anomala ROTH Tent. fl. germ, iii, P. I, 215 (1800). 

 Orthotrichum saxatile BRID. Muse. rec. II, P. II, 27 (1801), Sp. muse. II, 9 (1812), Mant. 



no (1819), Bry. univ. i, 275 (1826). SCHULTZ Fl. starg. 27 (1806). 

 Brachytrichum saxatile ROEHL. Deutsch. fl. iii, 47 (1813), Ann. Wett. ges. iii, 194. 

 Ortliotridnim aureum MART. Fl. cr. erl. 77, t. 2, f. 2 (1817). 

 Dorcndlon anomalum LINDB. Muse, scand. 28 (1879). 



Autoicous ; tufts rather dense, olivaceous green or almost black. 

 Stems 17 i in. high, erect, dichotomous and fastigiate. Leaves 

 imbricated when dry, recurved when moist and then becoming patent, 

 lanceolate, upper elongated, more or less suddenly acuminate, acute ; 

 nerve stout, vanishing below apex, cells in a single layer, basal rectang. 

 smooth, the walls unequally thickened, gradually passing upward 

 into hexagonal and rounded, with slightly incrassate walls and simple 

 papillae ; margin recurved below. Caps, generally exserted above the 

 perichaetium, sub-cylindric or oval-cylindric, slightly contracted below 

 the mouth, attenuated at base into a conical neck, passing more or less 

 suddenly into the pedicel; stomata immersed, bands 8 or 16, long as 

 sporangium, orange-brown, the 8 principal of 2 3 rows of quadrate cells 

 with strongly thickened lateral walls, the alternate bands fainter, some- 

 times almost imperceptible, annulus persistent, double; peristome simple, 

 pale yellow, teeth erect when dry, 8 bigeminate, or 16 geminate, longi- 

 tudinally striolate, each tooth at base with four little striolate lamellae, 

 reaching the second joint or extending upwards in fragments ; cilia none 

 or rudimentary. Calyptra conic-campanulate, covering the caps., the 

 hairs rusty-yellow. Lid conic-apiculate. 

 HAB. Stones and trap rocks ; rare. Fr. 5. 



Trap rocks at Aberdour, Fife (Luckman 1860) ! Arthur's Seat (Dr. B. White 1862) ! ! 

 Largo Law, Fife (Howie 1865) ! ! Abbey Crag, Stirling (Lyle). Conway Castle 

 (Wilson). Armagh (Adm. Jones). By the Dodder at Sallygap (Orr). 



