(379) 



long and narrow, 3^3 by 1 3^' to 2 mm., in this respect ap- 

 proaching cordifolium, but they have the abruptly inflated 

 alar cells of giganteum. Belt Mts., Columbia Falls (219). 



Hypium Schreberi Willd. Belt Mts., Columbia Falls, 

 April (126). 



Hylocomium -proliferum (L.) Lindb. Belt Mts., Columbia 

 Falls, May (90). 



Hylocomium squarrosum (L.) Br. & Sch. Head of Mac- 

 donald Lake (357). 



Hylocomium triquctrum (L.) Br. & Sch. Belt Mts., Colum- 

 bia Falls, April (126). 



Hylocomium loreum (L.) Br. & Sch. Macdonald Lake, 

 Columbia Falls (202). 



Description of Plates. 



Camera lucida drawings reproduced without reduction. 



Plate 34. Dicranum hispidulum. 



Fig. 1. Plant about natural size. 



Figs. 2 and 3. Stem leaves, X 34- 



Fig. 4. Inner perichaetial leaf, X 34- 



Fig. 5. Antheridial bud. 



Figs. 6 and 7. Cross-sections of leaf, 6 X 285 and 7 X 400. 



Fig. 8. Part of base of stem leaf, X i6o- 



Fig. 9. Median cells of stem leaf, X 160. 



Fig. 10. Apex of leaf, X 160. 



Fig. 11. Cross-section of stem, X 285. 



Fig. 12. Capsule and 13, calyptra, X J 6. 



Fig. 14. Part of peristome and annulus, X 285. 



Plate 35. Seligeria campy lopoda. 



Fig. 1. Plants about natural size. 



Fig. 2. Plant enlarged, X 35- 



Fig. 3. Lid, X 35- 



Fig. 4. Inner perichaetial leaf, X 35- 



Fig. 5. Stem leaf below, X 35- 



Fig. 6. Calyptra, X 35- 



Fig. 7. Part of peristome, X 175. 



Fig. 8. Antheridium with leaf and paraphyses. 



Fig. 9. Middle stem leaf, X 4 2 - 



Fig. 10. Apex of leaf, X 200. 



Fig. 11. Part of base of leaf, X 200. 



