— 242 — 



cells short-rectangular, the inner narrower, the alar brown; 

 costa scarcely percurrent. Capsule oblong; teeth reddish below, 

 yellowish in upper half; pedicel flexuous or arcuate when 

 young and moistened; calyptra not long. Spores about 0,01 m. 

 m. — Eocks and stonewalls. Eur. not r. in southern distr. 

 France, Switzerl.l Norway: R. Hartman. Spain: Levier. 

 2. B. Gardner! Lesquereux. — Ptychomitrium Lq.; Brachystelium 

 Kindb. 



Differs from the last: Leaves wholly carinate gradually acu- 

 minate less distinctly plicate, falcate when moist; outer basal 

 cells subquadrate. Capsule subcylindric; teeth blood-red; pe- 

 dicel not flexuous. — Rocks r. Amer. Pacif. distr. Can.: Ma- 

 coun. U. S.: Howell and Henderson, com. Cardot. 



n. Notarisia Hampe. 

 S.E.nigricans Kunze. — Macromitrium Kunze; Brachystelium 

 Kindb. 



Leaves entire not involute, from short concave base contrac- 

 ted to the broad-subulate channelled or near apex carinate 

 acumen, gen. acute; cells of acumen nearly opake, the margi- 

 nal basal often subquadrate; other basal cells rectangular also 

 pellucid, the inner not much narrower, the lowest larger often 

 yellowish princ. the alar; costa distinct nearly to apex. Cap- 

 sule oblong with indistinct neck; pedicel rigid. Spores 0,02 

 m. m. — Rocks r. Eur. Portugal: Solms Laubach, com. Na- 

 thorst (Teneriffa, com. Husnot). 



* B.Drummondii Hooker et Wilson. — Grimmia H. W.; 

 Brachystelium C. M.; Ptychomitrium Sull. ic. m. 



Capsule oval. Leaves not reflexed at base, sometimes slightly 

 sinuolate near apex. — Trees r. Amer. U. S. south, st.: Lang- 

 lois, com. Cardot. 



4.B.incurTnm SchwESgrichen. — Weisia Schw.; Brachystelium 

 C. M.; Ptj'chomitrium Sull. ic. m. 



Leaves entire, from short concave base contracted to the 

 sublinear involute and at borders thickened acumen, gen. obtuse; 

 cells of acumen opake, the lower basal rectangular hyaline; 

 costa faint above. Capsule oval with short or indistinct neck; 

 pedicel often curved when moistened. Spores about 0,01 m. m. 

 Smaller than the last. — Rocks princ. of sandstone, r. Amer. 

 U. S: Fitzgerald, com. Renauld. »Can.: Macoun»: Lesq. et 

 Jam. 



* B.glyphomitrioides Balsamo et Notaris. — Grimmia B. et 

 N.; Brachysteleum C. M.; Ptychomitrium pusillum Br. eur. 



