— 38 — 



lo.I.striatulura Spruce. — Hypnum Spr.; Isothecium Kindb.; 

 Eurhynchium Schimp.; » Hypnum filescens Bridel»: C. M. syn. 



Leaves serrulate all around, recurved below, subdecurrent 

 not densely crowded; costa long stout often rough at back. 

 Stem-leaves subovate with long subulate or filiform often twi- 

 sted acumen. Branch-leaves ovate or broadly ovate-oblong, 

 short-acuminate without filiform point. Capsule oval-oblong; 

 cUia long. Tufts green not glossy. Resembles often I. myosu- 

 roides in habit. Very r. fruiting. — Rocks r. Eur. Switzerl.! 

 Sweden: Lindberg. France: Philibert. Italy: ArcangeU. 



3. Stolonifera. 

 iG.I.stoloniferum Hooker. — Hypnum Hook.; Isotheeium 

 Bridel. 



Leaves small ovate-lanceolate with long often filiform-pointed 

 acumen, serrate above, entire below middle, decurrent; alar 

 cells on a short space. Perichetial leaves long-subulate with 

 filiform point. Capsule oval-oblong; teeth pale; cilia long; Ud 

 acute or apiculate. Tufts soft green or whitish green, faintly 

 or silky glossy. Branches crowded; flagellse numerous long 

 slender. — Trees. Amer. Pacif. distr. not uncommon. Can.: J. 

 Macoun. Alaska: J. M. Macoun. U. S.: Howell, com. Cardot. 

 IT.I.spiculiferuni Mitten. 



Differs from the last: Leaves larger, serrate nearly all around, 

 not decurrent; perichetial short-subulate. Capsule oblong; teeth 

 pale; ciUa short. Tufts less soft us. brownish and glossy. 

 Branches shorter, less slender, often less crowded; flagellse often 

 wanting. — Trees. Amer. Pacif. distr. not uncommon. Can.: 

 Macoun; Roell. U. S.: Roell, com. Cardot. 

 IS.I.Cardoti Kindb. bull. Torr. club XVII. 



Leaves larger than in the both last, shorter acuminate; those 

 of stem faintly denticulate below with an at apex twisted acu- 

 men; cells often yeUow. Perichetial leaves long-subulate. Cap- 

 sule oval; teeth yellow; ciha long; lid acute. Stem often pin- 

 nate; branches not crowded; flagellse thick r. present. More 

 robust than the both last. Tufts us. brown. — Trees r. Amer. 

 Pacif. distr. Can.: Macoun. U. S.: Roell, com. J. Cardot. 



4. Thamnioidea. 

 19.I.obtusatulum Kindb. revue bryol. 1895. 



Stem-leaves broad-ovate short acuminate acute, recurved below, 

 serrate above; branch-leaves smaller, suboval obtusate often 

 obtuse; upper (sometimes also the middle) cells oval or broad- 

 oblong, middle narrowly oblong or sublanceolate; costa reaching 



