BARTRAMIACE.E.] 216 [Catoscopium. 



nerve, squarrosely divergent, with 3 4 deep plaits on each side at base, 

 serrate at margin, nerve vanfshing in the point ; cells incrassate 

 linear, at basal angles quadrato-hexagonal. Perich. bracts erect, not 

 papillose, oblong-lanceolate. Caps, bent down on a short geniculate 

 seta, ovato-spheric, leptodermous dingy-orange, striated and furrowed 

 when dry ; lid very small, deep red, conical, obtuse ; teeth of peristome 

 orange with hyaline points, endostome as in Bartramia. Male infl. 

 thick and discoid, bracts from an erect base, divergent. 



HAB. Wet heaths and rocks in alpine moorlands and by waterfalls. 

 Fr. 6, rare. 



In fr. Lydford Falls (Greville) \ Cromaglown (Wilson). Llyn Ogwen and Beddgelert. 

 Trosachs (Mrs. Robertson). 



This fine species is very seldom met with in fruit, but in a sterile form is 

 frequent on subalpine moorlands where moisture is present, and in habit 

 bears considerable resemblance to Hylocomium triquetrum. 



Sect. 2. CATOSCOPIE^:. Capsule very small, smooth and polished ; 

 teeth short and obtuse ; leaf-cells smooth. 



CATOSCOPIUM Briil. 



Bryol. univ. i, 368 (1826). 



Plants slender, compactly tufted, radiculose at base. Leaves 

 erecto-patent, the cells incrassate, smooth, roundish-hexagonal. 

 Capsule very small with a short neck, horizontal, oval-spherical, hard, 

 black and glossy. Calyptra narrowly cucullate. Peristome of 16 

 lanceolate short obtuse teeth, irregular at margin. Endostome abortive. 

 Spores large smooth. Inhabiting mountain bogs and wet rocks. Der. 

 Karw downward, ovco7reo> to look. (T. LXXVII, D.) 



The only species of the genus has some resemblance to Discelium in the 

 capsule, but in its leaf-structure finds its most fitting place in Bavlmmiaccte. 



CATOSCOPIUM KIGRITUM (Hed.) End. 



SYN. Weissia nigrita HEDW. St. crypt, iii, 97, t. 39 (1792), Sp. muse. 72 (1801). BRID. 

 Muse. rec. II. P. I, 80 (1798), Sp. muse. I, 119 (1806), Mant-47 (1819). ROEHL. Moosg. 

 deutsch. 164 (1800), Deutsch. fl. iii, 52 (1813), Ann. Wett. gesells. iii, no. SCHWAEG. 

 Suppl. I, P. I, 74 (1811). WAHLEN. Fl. lapp. 323 (1812). HOOK. TAYL. Muse. brit. 43, 

 t. 14 (1818). GRAY Nat. arr. br. pi. i, 729 (1821). HOOK. Fl. scot. P. 2, 130 (1821). 



Bryum nigritum DICKS. Fasc. pi. crypt. Ill, 9 (1793). WITHER. Bot. arrang. 3 ed. iii, 

 840(1796). HOFFM. Deutsch. fl. ii, 33 (1796. HULL Br. fl. P. 2, 266 (1796). P. BEAUV. 

 Prodr. 48 (1805). 



Grimmia nigrita SMITH Fl. brit. iii, 1195 (1804), Eng. Bot. t. 1895. ROTH. Fl. germ, iii, 

 146 (1800). WEB. MOHR Bot. Tasch. 147 (1807). SCHKUHR Deutsch. Moos. 50, t. 26 

 (1810). 



