BARNES — NORTH AMERICAN MOSSES. 291 



201. Rliacomitrium speciosum C. Miill.— Dioicous: tufts very broad 

 and lax, plants intricate, robust, green: stems dichotomously branched, 

 elongate: leaves crowded, when wet quickly and very distinctly squarrose- 

 recurved, dimorphous; the lower (older) ovate from a broad base, many 

 times lightly plicate, rather long decurrent, acuminate, obtusate, cucul- 

 late; upper (younger) hair pointed, the hair stout, rather long, hyaline, 

 denticulate-serrate; margin quite entire, below (up to middle or beyond) 

 broadly revolute; costa broad, deeply canaliculate, excurrent; cells at 

 decurrent angles loosely parenchymatous, basilar longer: pericha^tia' leaves 

 involute, erose truncate at apex: capsule cylindric, erect, narrowed below 

 mouth, smooth, plicate with age; seta short, smooth, twisted; lid conic, 

 long rostrate; calyptra long subulate, apex slightly rough, persistent, 

 laciniate at base wnth 16 lobes; teeth very long and narrow, dirty red, 

 smooth, bifid almost to base; annulus none. Bot. Centralbl. 44: 388. 

 1890.— Victoria, Vancouver Is. 



202. Rliacomitrium languinosum subimberbe Hartman. — Tufts 

 extended, stems long, erect, a little flexuous, delicate, slightly nodulose, 

 branches distant, short; leaf point shorter, sometimes almost disappearing. 

 Fl. Miq. 46.— Miquelon Is. 



203. Rliacomitrium canescens mntieum Kindb.— Leaves without a 

 hair-point; cells yellow; costa percurrent: barren. Mac. Cat. 77.— Gold 

 Range, B. C. 



204. Rliacomitrium cauescens Delamarei Ren. & Card.— Tufts yel- 

 lowish, stems long, nodulose, branches short, erect, leaves erect when dry, 

 rigid, often broken at point, without a hair, almost smooth, costa percur- 

 rent: sterile, but very distinct from var. lufeseens Lesq. & James. Fl. 

 Miq. 46.— In extended mats on earth: Miquelon Island. 



205. Hedwigia ciliata subnuda Kindb.— Leaves nearly hairless, the 

 greater number broadly ovate, borders reflexed, cells larger, subquadrate. 

 Mac. Cat. 78.— On rocks in woods: Ottawa; also near Wooler, Ont. 



206. Zygodon H. & T.— Plants dichotomous, fastigiately branched, 

 crowded and interwoven with radicles: leaves spatulate lanceolate, very 

 chlorophyllose above, hyaline at base: capsule on an elongated pedicel, 

 oval-oblong, with a soft swelling neck, less distinctly striate; peristome 

 single or double, rarely none, the teeth resembling those of Orthotrichum; 

 calyptra smooth, cucullate. 



207. Zygodon viridissimus Brid. —Dioicous; tufts small, cushion like, 

 bright green above, brownish at base: stems sparingly branched, fastigiate, 

 brown radiculose at base: leaves dense, when moist recurved squarrose, 

 when dry erect-appressed, or slightly twisted, toward apex complicate, 

 oblong or linear-lanceolate, acutely acuminate, deeply carinate above, 

 expanded below, minutely papillose, margins plane; costa pellucid, end- 

 ing abruptly below apex; cells at base thin, quadrate hexagonal, above 



