— 37 — 



Leaves serrulate all around, recurved only near base, subde- 

 current not densely crowded; alar cells numerous finally yellow 

 on a Buboval space; costa smooth well-distinct gen. long but 

 not reaching to acumen. Stem-leaves subovate short-acumina- 

 te often with long filiform point; branch-leaves narrowly ovate - 

 oblong long-acuminate with short filiform point. Perichetial 

 leaves contracted to a long serrulate subulate filiform-pointed 

 acumen. Capsule subcylindric us. inclined; cilia short; lid 

 short-rostrate. Stem suberect or decumbent; branches some- 

 times flagellate. Tufts loose us. green. — On rocks and base 

 of trees. Eur. not r. Sweden, Norway, Switzerl.! Amer. r. Can. 

 (not in Pacif. distr.): Macoun; Waghorne. 

 12,I.Holtii Kindb. revue bryol. 1895. 



Differs from the last: Leaves shorter and crowded; those of 

 branches broad- ovate subobtuse without filiform point. Capsule 

 suboval larger. Stem rigid; branches subjulaceous. — Stones 

 by rivers r. Eur. Engl. Wales: G. A. Holt 1885. 

 IS.I.tenuinerve Kindb. check-list of Eur. and N. Amer. mosses. 

 — I. myosuroides brevinerve Kindb. note on Can. bryol. 1893. 



Differs from I. myosuroides: Leaves narrower with long fili- 

 form point; alar cells often finally brown on a round space. 

 Stem-leaves nearly entire; branch-leaves ovate-lanceolate; costa 

 us. faint vanishing far below acumen, sometimes double or in- 

 distinct. Lid of capsule conic acute not rostellate. — Rocks 

 in woods. Eur. not r. Sweden 1 Germany; Huebner. France: 

 Husnot m. Gall. Fseroer: com. C. Jensen. Amer. r. Can.: Waghorne. 

 14.1.acuticuspis Mitten; Lesq. et Jam. man. 



»Leaves loosely imbricate; those below the pericheetium cor- 

 date-ovate narrowly long-acuminate, minutely serrulate on the 

 borders, nearly smooth at the cuspidate apex, with a very short 

 diffused costa, forking or entire, vanishing in middle; cells of 

 basal angles obscured or dusky; leaves of branchlets elliptical- 

 ovate acute serrulate nerved to the middle; the perichetial su- 

 bulate from an oblong ecostate base, recurved, very entire. 

 Capsule oval inclined; pedicel short; lid conical; cilia short. — 

 Mitten, who had seen only two stems of this moss, says that 

 it may be H. Brewerianum Lesq., but that the description of 

 that species is not sufficiently complete to be quite certain. — 

 Amer. Brit. Col.: Douglas*: Lesq. et Jam. 1. c. (Authentical 

 specimens not seen). 



B. Leaf-cells oblong-lanceolate, lowest basal oval-quadrate, 

 alar green. Branch-leaves faintly striate. Lid of capsule long- 

 rostrate. Stem decumbent; branches short. 



