— 141 — 



lanceolate long-aouminate gradually tapering to a filiform point. 

 Perichetial leaves entire below the long linear point. Capsule 

 obovate. Tufts olivaceous sparingly radiculose. Lid of capsule 

 and male flowers not. seen. Habit of R. cupressi forme. — Wet 

 rocks r. Amer. Can. Brit. Col.: Macoun. 



B. Leaves entire. Stem eradiculose irregularly divided; 

 branches not compressed. Capsules unknown. 

 54.H.pseudo-complexuni Kindb. revue bryol. 1895. 



Leaves not appressed when dry; upper cells lanceolate, lower 

 oblong, angular (alar) suboval small not well-deHned. Stem- 

 leaves ovate or ovate-oblong. Branch-leaves ovate-lanceolate 

 longer-acuminate often falcate. Tufts dense pale green. Re- 

 sembles a var. of H. molluscum in habit. — Arctic district r. 

 Amer. Alaska: J. M. Macoun. 



6. Molluscoidea. 



A. Leaf-cells more or less sinuous (with crenulate walls). 

 Tufts eradiculose. 



a. Leaves small entire not plicate. Stem irregularly divided. 

 SS.U.condensatum Schimper; Husnot. 



Leaves from ovate base long-subulate, not decurrent; upper 

 cells Unear, the angular yellow irregular oblong-rectangular or 

 subquadrate. Capsules unknown. Tufts dense pale green. — 

 Wet places in alp. region r. Eur. Germany: Milde. 



h. Leaves us. large, denticulate above, plicate. Stem plu- 

 miform. 

 66.H.crista castrensis L. 



Leaves ovate-lanceolate gradually long-acuminate decurrent; 

 alar cells small few nearly indistinct, the others linear. Capsule 

 large not striate; annulus narrow; lid short-apiculate; pedicel 

 long. Tufts loose bright green, finally whitish. Stem rigid; 

 paraphyllia narrow. — Stones in woods princ. coniferous. Eur. 

 common in northern distr., r. in alp. regions. Sweden, Norway! 

 Amer. Can.: Macoun. U. S.: Wetherby. 



B. Leaf-cells not sinuous. Leaves not or faintly striate. 

 Stem us. plumiform. 



a. Stem gen. sparingly radiculose; paraphyllia us. broad. 

 Leaves small. 

 57.H. molluscum Hedwig. 



Leaves denticulate below, serrulate above, not or indistinctly 

 decurrent; angular cells small numerous hyaline round-oval, 

 special alar few not well-defined. Stem-leaves from broad-cor- 

 date base abruptly acuminate. Capsule suboval; annulus broad; 



