— o6 — 



long-rostrate; pedicel short. Stem pinnate or bipinnate. — 

 Rocks and trees. Eur. r. Germany: Schimper. Amer. Can.: 

 Macoun; Moser. 



B. Leaves not crisped; inner cells gen. round-oval. Stem 

 often pinnate; paraphyUia us. numerous. Monoecious. 

 T.T.Tirgrinianum Bridel. — Hypnum Brid. 1827; Thuidium 

 Lindb.; H3'pnum punctulatum Notaris 1834; Thuidium Not. 1863. 



Leaves denticulate often opake; costa vanishing in acumen 

 or subexcurrent. Stem-leaves from round-ovate or ovate-oblong 

 base abruptly long-acuminate, less distinctly denticulate; branch- 

 leaves ovate oblong shorter-acuminate. Capsule red-brown us. 

 arcuate strangulate; lid conic or convex, rostellate or apiculate; 

 cilia long often appeudiculate; pedicel long. Tufts green or 

 brown-green. — Logs and stone in woods. Eur. r. Switzerl.! 

 Austria: Barth, com. Levier. Amer. Can. r.: Macoun. 



* T.gracile Bruch et Schimper. — Hypnum B. S. 1843; Sull. 

 icon, muse; Thuidium Br. eur. 



Leaves gen. less opake. Capsule us. red; lid subobtuse short- 

 apiculate. — Amer. not r. in eastern distr. Can.: Macoun; Mo- 

 ser. U. S.: Langlois, com. Cardot. 



* T.pallens Lindberg. — T. lignicola Kindb. in Ottawa Natur. IV. 



Leaves more distinctly serrulate. Capsule pale; lid subobtu.se 

 short-apiculate. — Logs r. Eur. Sweden near Stockholm: Lind- 

 berg. Amer. Can.: Macoun. 

 S.T.SCitum Beauvois. — Hypnum B.; Thuidium Austin. 



Leaves entire, more or less opake but with shorter papillte 

 than in the last; co.sta us. vanishing below acumen. Stem- 

 leaves from round-ov^ate base abruptly acuminate; branch-leaves 

 ovate subobtuse. Capsule brown us. faintly curved not stran- 

 gulate; lid narrowly conic; cilia short not appeudiculate; pedicel 

 long. Tufts dark green. — Base of trees. Amer. not r. Can.: Macoun. 

 9.T.pseudo-gracile Kindb. n. sp. 



Difiers from T. virginiaimm: Leaves of stem broader, from 

 very broad base more abruptly narrowed to the often falcate 

 and gen. not long acumen, entire nearh' smooth; branch-leaves 

 entire or faintly denticulate. Capsules unknown. — Differs 

 also from T. scitum: Leaves larger and broader; costa percurrent 

 or exeurrenl. Stem-leaves shorter and more broadly revolute; 

 branch-leaves ovate-oblong acuminate acute. — Logs r. Amer. 

 Can. near Leamington: Macoun. 



C. Leaves not crisped; inner cells gen. suboblong. Stem 

 irregularly divided; paraphyUia few. 



