— 286 — 



h. Leaves long-acuminate with subpercurrent costa, the 

 lower distant. Capsule with rostellate lid. 

 lO.W.SuUivantii Schimper. — Astomum Sch.; Sull. icon, m.; 

 Weisia Kindb. 



Capsule globose; pedicel shorter. — Clover-fields r. Amer. 

 U. S.: Sullivant, coeq. C. Mueller; Mohr, com. Macoun. 

 ll.W.nitidula Schimper. ■ — Astomum Sch.; Weisia Kindb. 



sCapsule ovoid; pedicel mucli longer. — Amer. r. U, S.»: 

 Sullivant icon. m. 

 * W.Drummondii Kindb. — Systegium cat. Can. m. 



Capsule sabglobose; pedicel 3 — 4 times longer, nearly emer- 

 ging above upper leaves. — Amer. r. Can.: Diummond, com. 

 Macoun. 



C. Leaves crowded: upper long-acuminate, lower short-acu- 

 minate; costa subpercurrent. Capsule with thick short obtuse 

 point. 



12.W.Lutloviciae Sullivant. — Astomum Sull. ic. m.; Weisia 

 Kindb. 



Capsule suboval; pedicel often somewhat longer. — Amer. r. 

 »U. S.»: Sullivant. 



IV. Hymenostomum R. Brown. 



A. Pedicel short. Stem finally decumbent. Leaves not 

 involute. 



IS.W.squarrosa Esenbeck et Hornschuch. — Hymenostomum 

 Es. et Hornsch.; Weisia C. M. 



Capsule with somewhat small mouth. Plants very small. — 

 Clay fields and banks r. Eur. France: Husnot. Germany: 

 Dreesen. 



Bi Pedicel elongate. Stem erect. Leaves involute. 

 1 4. W. microstoma Hedwig. — Gymnostomum H.; Weisia 

 C. M. 



Leaves us. not strongly involute above; costa pale faint. 

 Capsule with very small mouth, often asymmetric. — Banks 

 and barren fields. Eur. not uncommon. Sweden, Spain etc.! 

 IS.W.tortilis Schwsegrichen. — Gymnostomum Schw.; Weisia 

 C. M. 



Leaves less involute; costa stout finally brown. Capsule 

 symmetric with somewhat wide mouth. — Limestone rocks 

 and walls r. Eur. Switzerl.! France: Boulay. Engl.: Rogers. 

 V. Eu-Weisia. 



A. Perichetial leaves obtuse short convolute. Other leaves 

 with not distinctly excurrent costa, not involute, 



