— 124 — 



chetial leaves serrate longer acuminate. Capsule cylindric ar- 

 cuate strangulate; lid large rostellate; peristome not seen; pedicel 

 flexuous defiexed arcuate. Tufts dense green. Stem creeping 

 not pinnate; branches subjulaceous often incurved at the tops; 

 paraphyllia broad. Probably monoecious. — Trees r. Atner. 

 Can.: Macoun; Dearness, com. Macoun. 



61. Mj'uriuni Schimper. 

 l.M.Boscii Schwsegrichen. — Hypnum Schw.; SuUiv. icon, m.; 

 Myurium Kindb. 



Leaves large very concave not decurrent, from ovate-cordate 

 not recurved base abruptly narrowed to a subulate often tvt'isted 

 point, striate, denticulate all around; alar cells few suboval or 

 irregular, lower basal often brownish, the others sublinear; costa 

 simple vanishing above middle or short and double. Capsule 

 large oblong-oval curved; annulus broad; segments nearly split; 

 ciUa 3 not much shorter, not appendiculate; pedicel 2—3 centim. 

 long. Perichetial leaves abruptly long-subulate. Stem subpin- 

 nate or irregularly divided; branches robust turgid. Dioecious 

 r. fruiting. — Earth in woods. Amer. U. S. »not uncommon*: 

 SulUvant. Austin, com. Macoun; Sullivant, com. C. Mueller; 

 Fitzgerald, com. Renauld. 

 * M.coloradense Austin. — Hypnum Aust.; Myurium Kindb. 



Cells of branch-leaves often oval-oblong princ. the upper, 

 sometimes also the angular. Capsules unknown. — Amer. r. 

 U. S. Arkansas Hot Springs: Ch. RoeU, com. J. Roell. 

 2.11I.Hebridarum Schimper. 



Differs from M. Boscii: Leaves narrower, from ovate-oblong 

 or oblong-linear base more abruptly conti-acted to the point, 

 not striate; costa indistinct. Capsules unknown. — Rocks near 

 sea r. Eiir. Scotl.: Fergusson, com. Husnot (Africa, Madeira: 

 G. Fritze, com. RoeU and Kaurin). 



62. Hypnum L.; Dillenius; in part. 



A. Leaves with simple (sometimes in H. Bambergeri short 

 and double) costa. Dioecious or (in H. fliiviatile and sometimes 

 in Harpidiuni) monoecious. 



a. Leaves (exc. H. erythrorhizon and H. harpidioides) not 

 recurved at borders. 



I. Alaria. Leaves (princ. the youngest) mamillose above, us. 

 striate; middle cells often dilated, alar often yellow; costa 

 thick. Stem us. pinnate; paraphyllia present. Leaves falcate. 



II. Cratoneuron. Leaves not mamillose, gen. not striate; 

 middle cells gen. dilated, alar gen. distinct but r. yellow; costa 



