— 256 — 



2. Limbatse. 



A. Leav'es limbaty by yellow narrow-rectangnlar cells. 

 41.B.inarginata Br. eur. — Tortula Spruce. 



Leaves suboblong gen. acute; costA somewhat longly exeurrent. 

 Peristome once contorted. . — • Sandstone-walls and roadsides, in 

 warmer districts r. Eur. France: Philibert; Bouvet. Portugal: 

 Levier. Amer. »U. S.»: Lesq. et Jam. 



* B.Iimbata Lindberg. — Tortula Lindb. 



»Leaves larger, broader limbate. — Eur. r. Italy: Rabenhorst*: 

 Husnot muBCol. Gall. 

 *B.Egelingi ScWiephacke. 



> Leaves smaller, not narrowed at base, broader limbate by 



larger cells. Capsule smaller. Amer. r. U. S. Tennessee: 



EgeUngK C. M. in Flora 1887. 



B. Leaves limbate by subquadrate us. hyaline cells. 

 42.B.Solm8ii Schimper. 



Leaves oval-oblong gen. obtuse; costa somewhat longly ex- 

 current. Peristome twice contorted. — Eur. r. ^Portugal: Solms 

 Laubach»: Schimper (Madeira: Fritze, com. Levier.) 

 43.B.Porteri James. — r Desmatodon Jam.; Barbula Kindb. 



LeaTCs oblong-lanceolate short-acuminate acute,-the lower with 

 yellow marginal cells; costa percurrent. Peristome half-twisted. 

 — Rocks r. Amer. Can.: Macoun. 



* B-subcarnifolia C. M. et Kindb. 1. c. 



Leaves gen. oblong,, less distinctly limbate above; costa some- 

 times short-excurrent. Peristome faintly twisted. — Amer. r. 

 Can, Pelw. island: Macoun. 



3. Muraliformes. 



A. Leaves somewhat large. Tufts us. loose. 

 44.B.maralis L. — Bryum L.; Barbula; Timm. 



Leaves sublinear or oblong-lingulate obtuse, reflexed to the 

 hairpoint, often limbate by one cell-row; upper cells opake; 

 costa us. exeurrent. Capsule oblong-cylindric; teeth reddish 

 2 or 3 times contorted; annulus double. Tufts us. glaucous 

 green and very loose. Us. monoecious. — Stones, stone-walls 

 and roofs. Eur, nearly common in lower districts. Sweden, 

 Germany, Switzerl., Italy! Amer. r. »U. S.»: Lesq. et Jam. 

 *B.aB8tiva Schultz. 



Leaves long lanceolate-Ungulate subacuminate green; costa 

 short-excurrent or subpercurrent. Peristome gen. once contorted. 

 Us. dioecious. — Eur. not r. Sweden, Switzerl. 1 



