— 112 — 



and lowest basal cells suboval, the others sublinear or the 

 uppermost lanceolate. Perichetial leaves nerveless with long 

 filiform point. Capsule subcylindric. Stem subpinnate; branches 

 short. — ■ Amer. r. U. S. Pacif. distr.: Roell. 

 III. Rutabularia Kindb. 

 A. Leaves not or r. (sometimes in B. rivulare) plicate, not 

 or faintly recurved. 



a. Monoecious us. fruiting. 



19.B.nitaltmlum Linne. — Hypnum L.; Brachythecium Br. eur. 

 Leaves more or less decurrent; alar cells hyaline somewhat 

 large but gen. not forming distinct auricles, the others linear- 

 lanceolate; costa vanishing above middle. Stem-leave? ovate 

 gradually short-acuminate, minutely denticulate all around. 

 Branch-leaves ovate oblong longer acuminate and more distinctly 

 denticulate princ. above. Perichetial leaves with long filiform 

 point. Capsule ovate-oblong or cylindric arcuate; teeth brown; 

 cilia not appendiculate; lid acute; pedicel very rough, sometimes 

 long. Tufts sparingly radiculose. Stem irregularly divided or 

 with pinnate not compressed branches. — Rocks and logs princ. 

 in woods in dry stations, r, in water. Eur. common below 

 alp. regions. Sweden, Switzerl., Italy! Amer. Can. r.: Maroun; 

 Bm-gess; Waghorne. 



20.B.rutabuliforme Kindb. cat. Canad- m. 



Differs from the last: Leaves shorter acuminate. Pedicel of 

 capsule about 1 c. m. long; cilia appendiculate. Stem very 

 rigid. — Stones in brooks r. Amer. Can. Brit. Col.: Macoun. 



b. Dioecious r. fruiting. 



21.B.rivulare Br. eur. — B.rivulare *Nov8e Brunsvicise Kindb. 

 in Ottawa Natural. IV. 



Leaves long-decurrent, broader and shorter than in B. ruta- 

 hulum; alar cells very large and hyaline or reddish, forming 

 distinct auricles, the others lower basal suboval more nume- 

 rous; costa us. vanishing near or not much above middle. 

 Stem-leaves broad-ovate with very short point and nearly entire. 

 Branch-leaves broadly ovate-oblong. Capsule, cilia and lid as 

 in B. rutabulum; teeth i-ed or (in european specimens) brown- 

 red; pedicel not very rough and not long. Tufts nearly eradi- 

 culose. Stem divided in pinnate sometimes nearly tree-like 

 branches. — Wet rocks and stones gen. in running water. 

 Eur. common also in alps. Sweden, Non^'ay, Germany, Swit- 

 zerl., Italy! Germany (fruiting): Schimper. Amer, not common, 



