GRIMMIACE^.] 86 [Orthotrichum. 



of 2 4 rows of cells with thickened yellow lateral walls ; stomata 

 immersed, the border cells not turgid. Teeth 8, bigeminate, pale 

 yellow, perforated at top, rarely cleft in the median line, finely papil- 

 lose, cilia 8, smooth or papillose, filiform, with intermediate cilia very 

 small or rudimentary. Lid conic, apiculate. Calyptra pale yellow, 

 plicate, conico-campanulate, naked. Male infl. gemmiform, numerous, 

 on a special branch, bracts ovate. 

 HAB. On trees in hedges, rare. Fr. 5 6. 



Clifton Ings, York, on willow with O. Sprucei (Spruce 1842) ! Mickley, Yorks. (Baker}. 

 Addingham, between Bolton and Ilkley (Carrington 1855) Miney and Trungle, 

 Cornwall (Curnow). Westaston, Wicklow. Near Galway and Cork (Carroll). 



This little moss has probably been overlooked, and has an elegant 

 symmetric capsule and lingulate upper leaves with rounded points, the cells 

 large for the size of the plant and resembling those of O. tenellum ; the 

 intermediate cilia are sometimes abortive. It may be known from 0. Schimperi 

 by its narrower and longer capsule with defluent neck, and more conical 

 calyptra. 



1 6. ORTHOTRICHUM TENELLUM Bnich. 



Autoicous ; in small loose deep green tufts. Leaves erecto-patent, 

 oblong-lanceolate. Capsule emersed, narrow cylindric, with 8 broad 

 bands : teeth 8 bigeminate, cilia 8 ; calyptra conic-campanulate, slightly 

 hairy. (T. LVIII, B.) 



SYN. Orthotrichum tenellum BRUCH in BRID. Bry. univ. i, 786 (1827). WALLR. Fl. cr. germ, i, 

 209 (1831). HUEBEN. Muse. germ. 360 (1833). BR. Sen. Bry. eur. fasc. 23, p. 15, t. 6 

 (1837). DE NoT - Syllab. 153 (1838), Epilogo 311 (1869). RABENH. Deutsch. kr. fl. ii, 

 S. 3, 179 (1848).- C. MUELL. Synops. i, 704 (1849). HAMMAR Mon. Orthot. suec. 5 

 (1852). WILS. Bry. br. 178, t. 45 (1855). SCHIMP. Synops. 265 (1860), 2 ed. 329. 

 BERK. Handb. Br. m. 222 (1863). MILDE Bry. siles. 173 (1869). BOULAY Fl. cr. de 

 1'Est 610 (1872). HOBK. Syn. Br. m. 91 (1873). HUSN. Mouss. N.-ouest 108 (1873). 

 JURATZ. Laubm. oester.-ung. 209 (1882). LESQ. JAMES Moss. N. Amer. 172 (1884). 

 VENTURI in HUSN. Muse. gall. 185, t 50 (1887). 

 Dorcadion tenellum LINDB. Muse, scand. 28 (1879). 



Autoicous; in small loose deep green cushions ^ in. high. Leaves 

 imbricated when dry, erecto-patent when moist, from an oblong base, 

 lanceolate, the apex muticous, apiculate or acuminate, margin revolute 

 nearly to point, nerve vanishing at apex ; cells at base diaphanous, quad- 

 rate, elongate next the nerve, passing gradually into angular or rounded, 

 with thickened walls and very faint papillae. Caps, emersed for all the 

 length of the sporangium, pachydermous, golden-brown, narrow 

 cylindric, not contracted below the mouth, furrowed for all the length, 

 when moist oval-cylindric, passing gradually into a short neck; bands 8, 

 orange, broad and prominent, of 34 rows of quadrangular cells with 

 strongly thickened lateral walls; stomata immersed, with strongly 



