Hypnace^.] 155 [Sematophyllum. 



SvN. — Hypnum micans (non Swartz) Wils. in Hook. Br. fl. ii, 86 (1833), Bry. Brit. 402, t. sg 

 (1855). Tayl. in Mack. Fl. Hib. P. 2, 42 (1836). C. Muell. Synops. ii, 290 (1851). 

 ScHiMP. Synops. 2 ed. 784 (1876). HusN. Muse. Gall. 414, t. 120 (1894). Dix. James. 

 Stud. Handb. 487 (1896). Limpr, in Raeenh. D. kr. fl. Laubm, iii, 544 (1899), 



Hypnum Nova Ccesarece Austin Musci Appalach, no. 440 (1870), 



Lcskea micans Hobk. Synops. 143 (1873). 



Chrysobryum micans Lindb. Sulliv. Icon. muse. Suppl. 91, t. 67 (1874). 



Rhynchostegium Nova Ccesareee Austin in Coulter Bot. Bulletin i, 30 (1876). 



Hypnum {Rhaphidosiegium) Nova Casarea Lesq, Jambs Moss, N, Amer, 356 (1884). 



Raphidostegium micans Renauld in Rev, bryol, 1883, p. 47. 



Calliergon micans Kindb. Eur. & N. Amer. Bryipse 85 (1897). 



Raphidostegium Nova Casarea Ren. Cardot Musei Amer. sept. 54 (1893). 



Dioicous ; prostrate in dense glossy yellow-green or brownish patches. 

 Stem creeping, i in. long, branches attenuated, with few short incurved 

 ramuli and a few lanceolate paraphyllia ; stem-leaves erecto-patent, 

 narrowed at the non-decurrent base, broadly obovate or rounded, very 

 concave, shortly apiculate, margin slightly recurved, serrulate in the 

 upper half, obscurely two-nerved or nerveless ; cells narrowly fusiform, 

 empty, at base yellow, rectangular, at angles about 12, hyaline inflated, 

 quadrate and oval. Perich. bracts radiculose at base, erect, lanceolate- 

 acuminate, distantly serrated, the inner just overtopping the vaginula, 

 seta very slender cygneous, purple ; capsule subcernuous or horizontal, 

 obovate, nearly regular, tapering at neck, lid conic, rostrate, the beak rather 

 obtuse, deflexed or sometimes turned upward ; annulus of i — 2 rows of 

 irregular cells, peristome yellow, the teeth lanceolate, papillose in the 

 upper half, endostome with a high basal membrane, the processes as long 

 as peristome, narrowly fenestrate in middle line and without cilia. Male 

 plant slender, more erect, the inflorescence gemmiform, scattered along 

 the stem, which is nearly simple. 



Hab, — Wet shady rocks, rare. 



Glengariff {Miss Hutchins 1809). O'Sullivan's cascade, Cromaglown and Fila Doun, 

 Killarney (Wilson 1829) ! ! Borrowdale $ plant (Wilson 1864) ! Succoth hill, 

 Arrochar (McKinlay 1866) ! Invermoidart, W. Inverness in 3 stations (MacVicar) ! ! 



For the opportunity of figuring the fruit of this lovely moss, I am indebted 

 to the kindness of my friend Mrs. Britton, who had sketches made from the 

 fertile plant in Austin's herbarium. The moss is frequent in the Alleghany 

 mountains of Pennsylvania, where the fruit was found by Wolle and Rau in 

 1874. Hypnum micans Swartz (Adnot. botan. 1829) = H. albulum C. Muell. 

 Synops. ii, 280, and belongs to the genus Plagiothecium which may well retain 

 Swartz's name without interfering with the present species. Austin to avoid 

 this duplication changed the name to Novm Ccesana, by which it is known 

 in America. 



