JURCH 1908.] 0KA3IURA—h^EW GENERA OF MUSCI. 43 



mm., smallest ones 0.028 mm., the average 0.042 mm. in dia- 

 meter ; maturing in December. 



Type locality. Prov. Tosa, Mt. Tsuetate-toge, Nagaoka- 

 gun, (Coll. S. Okamura ! April 6, 1906 ; S. Hagihara and S. 

 Okamura ! Dec. 29, 1906.) 



EXPLANATION OF PLATES II & III. 

 Plate II. 



Fig. A. Plant in moist condition. Natural size. 



Fig. B. Rhizoid. X60. 



Fig. C. Transverse section of stem. X 70. 



Fig. D. Leaves from upper, middle and lower parts of branch. Natu- 

 ral size. 



Fig. E. A leaf. X3. 



Fig. F. A leaf, x 15. 



Fig. G. Areolation of lowest margin of leaf. x70. 



Fig. H. Areolation of median part of leaf. a. more magnified. X50. 



Fig. I. Areolation of upper margin of leaf. X70. 



Fig. J. Transverse section of leaf. a. lower part; b. median part; 

 c. upper part. x50. 



Fig. K. Antheridium. X60. 



Fig. L. Archegonium. X60. 



Fig. M. Paraphyses. X60, 



Fig. N. Part of fruiting plant with perichetial leaves. Natural size. 



Fig. O. Capsule. X2. 



Fig. P. Young capsule. x2. 



Fig. 0. External peristome, a. lamella; h. lateral view. X60. 



Fig. R. Inner peristome. X60. 



Fig. S. Calyptra. X2. 



Fig. T. Areolation of lower part of calyptra. X 25. 



Fig. U. Operculum. X2 and x5. 



Fig. V. Spore. x70. 



