BARNES NORTH AMERICAN MOSSES. 311 



peristome small, outer teeth short, densely trabeculate, inner ones slender, 

 short, sulcate, split to the short shallow sulcus, short cuspidate, cilia very 

 short, single, rudimentary. Flora 70: 219. 1887. Alaska. 



29 1 . Bryuin Edwardsianum C. & M. Kindb. Nearly allied to B. War- 

 neum, agreeing in peculiar peristome and very large spores (about .05 

 mm. ), but differing principally in leaves longer acuminate, entire, revolute 

 at borders; costa long excurrent: capsule narrower and lid lower: flagelli- 

 form branches absent: monoicous. Mac. Cat. 120. On damp sandy soil: 

 Prince Edward Island. 



292. Bryum Knowltoni Barnes. Plants densely cespitose, inter- 

 woven with red and brown rhizoids: stems copiously branched by innova- 

 tions, reddish: leaves closely imbricated in bud like tufts at top of innova- 

 tions, not twisted when dry, youngest bright green, older dirty yellow, 

 carinate, concave, ovate to obovate-lanceolate, lower shorter, upper nar- 

 rower, all abruptly and shortly acuminate; costa shortly excurrent, or dis- 

 solving in or ceasing below apex; margin entire, or rarely slightly denticu- 

 late here and there, slightly revolute or plane, border usually indistinct; 

 cells rectangular and hyaline below, rhomboidal and densely chlorophyl- 

 lose above: polygamous: capsule red brown or paler, rugose, pendent, ob- 

 long-pyriform; operculum small, strongly convex, apiculate, long persist- 

 ent; annulus triple, revoluble; teeth linear lanceolate, strongly barred 

 within, smooth above; segments of endostome free, strongly nodose, split 

 between along keel, cilia two, rudimentary. Bot. Gaz. 14. 44. 1889. 

 Crevices in rocks: Funk Island, Newfoundland. 



293. Bryuin fallax Milde. Stems 5-10 mm., branching: tufts yellow- 

 ish : leaves erect spreading, oval, decurrent, concave carinate, very shortly 

 mucronate by excurrent costa, entire, marginate, revolute at border, upper 

 cells hexagonal : dioicous : capsule pendent, symmetric or arcuate, 

 oblong pyriform, contracted at mouth ; collum as long as sporangium ; 

 lid conic, apiculate ; annulus large ; teeth yellow, segments of endostome 

 split along keel, cilia rudimentary. Husnot, Muse. Gall. 238. St. Mat- 

 thew Island, Behring Sea. 



294. Bryum oenenm Blytt. Dioicous : tufts thick, olive color and 

 reddish green, when old almost copper colored, reddish radiculose within : 

 leaves spreading, rigid, when dry falcate incurved and somewhat twisted, 

 narrowed at base and decurrent ; lower leaves small and distant, ovate 

 or obovate, sharp pointed, upper leaves oblong lanceolate or broad lanceo- 

 late, long pointed, red marginate ; margin revolute, entire ; costa thick, 

 red, generally excurrent ; cells thick-walled, pitted, above rhombic- 

 hexagonal, the basal rectangular : perichaetial leaves lanceolate, much 

 smaller, rigid : capsule pendent or nodding, club pyriform, some- 

 what curved, reddish brown ; neck one-half sporangium, when dry fur- 

 rowed ; lid small, yellow, convex ; annulus compound (2) ; teeth narrow, 



