— 177 



86. Aongstroemia Brnch et Schimper. 

 l.Ao.longipes Sommerfelt. — Weisia Somf ; Aongstroemia 



B. S. 



Leaves ovate-oblong entire not recurved, very small, appres- 

 sed when drj't upper acuminate sheathing; costa not percurrent. 

 Capsule ovoid smooth ei-ect; lid rostcllate; teeth red below, 

 yellow above, sometimes not cleft; pedicel about 1 c. m.,stem 

 shorter. Tufts loose. Male flowers discoid. Dioecious. — 

 Earth princ. on old roads in alps r. Eur. Norwayl Sweden 

 below alps: J. Persson. Amer. Can.: MHcoun. 

 87. Trematodon Michaux. 



I. Ell-TrematOflon. Capsule subcylindric; neck long abruptly 

 narrowed; teeth long with prominent basal tube; pedicel long. 



II. Pseudo-Bruchia. Capsule rourd-oval when ripe; neck 

 short gradually narrowed; teeth short broad without prominent 

 tube; pedicel short, 



I. Eu-Trematodon. 



A. Capsule not much shorter than neck. Leaves entire; 

 costa long-excurrent. 



l.T.anibigliUS Hedwig. — Dicranum H.; Trematodon Horn- 

 schuch. 



Leaves from ovate or ovate-oblong not truncate base abruptly 

 narrowed to a subulate in upper part by costa filled acumen. 

 Perichetial leaves gradually acuminate; costa more or less ex- 

 current often denticulate at apex. Peristomial teeth red us. 

 cleft. — Wet sand or peat-bogs princ. in northern distr. Eur. 

 Sweden not r.l; Miss 0. Cron. Norway: W. Baur. Germany: 

 Huebner. Amer. r. Can.: Macoun; Waghorne. 

 S.T.acicularis Kindb. revue bryol. 1896. 



Leaves broadly suboval truncate above, pointed by costa; 

 perichetial nearly similar but larger and longer. Peristomial 

 teeth orange split in middle; basal tube red. — Bogs r. Amer. 

 Can. Brit. Col: Macoun. 



B. Capsule with twice longer neck. Leaves often denticu- 

 late; costa not or scarcely excurrent. 



S.T.loiigicollis Michaux. 



Leaves narrow gradually subulate; perichetial nearly similar. 

 Peristomial teeth pale red often entire. — Moist clay or sandy 

 soil. Eur. r. Italy: Gjudano, com. Husnot (a var. with entire 

 leaves). Amer. not r. in southern distr. U. S.; Sullivant, com, 



C. Mueller. 



