HYPNACE *- ] 165 [Stereodon. 



S.Canariensis is short and wide, resembling that of C. molluscum, and the leaf- 

 cells are extremely narrow, measuring according to Mitten ff in. long by 

 -sjvv m. wide. In size and habit both Canariensis and circinalis are very much 

 alike, the form of leaf-base and apex, marginal serration and cells are what we 

 must rely upon to distinguish them. 



8. 



STEREODON CIRCINALIS (Hook.} Brid. 



Stem creeping, pinnate ; leaves lanceolate-subulate, circinato-falcate, 

 secund, subserrate, narrow at base, with rounded auricles occupied by 

 brown or yellow cells. Capsule oval, curved cernuous, lid conical, 

 pointed. (T. CXIV, D.) 



S.Hypnum circinale HOOK. Muse. exot. ii, 21, t. 107 (1820). BRID. Bry. univ. ii, 621 

 (1827). C. MUELL. Synops. ii, 318 (1851). LESQ. JAMES Moss. N. Amer. 392 (1884). 

 CARDOT in Rev. bryol. 1890, p. 17. 



Hypnum Sequoieti C. MUELL. in Flora 1875, p. 91. 



Dioicous ; growing in brownish green or straw-coloured patches, soft 

 and rather glossy. Stem creeping slender flexuose, pinnate, with few 

 simple unequal branches; leaves from an ovate base, incurved at margin, 

 lanceolate; suddenly narrowed into a subulate, falcato-secund acumen 

 half length of leaf, base narrow at insertion, with rounded auricles, 

 sometimes wanting on one side, margin distantly serrulate in the upper 

 half, cells above narrow linear, at base yellow, quadrate, at angles the 

 auricles occupied by about 20 small quadrate and angular cells, mostly 

 dark orange-brown. Perich. bracts thin, sheathing, serrated, lanceolate, 

 extended into a long slender subfalcate acumen ; seta rufo-fuscous flexuose, 

 capsule cernuous, oval gibbous ; processes of endostome imperforate, 

 cilia i 2, of same length. 



HAB. On rocks, Cromaglown, Killarney. Male and sterile female plants 

 intermixed (Moore. Hunt 1867. Binstead 1 896) ! ! Chapel above Gal ways 

 bridge, Kenmare road (Binstead 1900) ! ! 



To the sharp-sighted M. Cardot we owe the detection of this moss as a 

 native, specimens having been collected by D. Moore and named " H. hamulosum ? " 

 which he found were circinalis. It was first collected by Menzies on trees, in 

 N. West America in 1793, and is closely allied to the last species, from which 

 it differs by the large rounded auricles with dark brown cells, and the subulate 

 acumen forming half the length of the leaf, which is only slightly serrulate and 

 sometimes quite entire. The leaf cells also differ considerably from those of 

 Canariense, being shorter and wider, and in the American plant the auricular 

 cells are but faintly tinged with brown. 



