1918] HAUPT—PALLAVICINIA 533 
Fic. 38.—Mature spores and elater; 630. 
Fic. 39.—Wall of mature capsule and calyptra; X30 
Fic. 40.—Median longitudinal section of sterile cap of capsule in mother 
cell stage; X50. 
Fic. 41.—Typical foot of mature sporophyte; X30. 
Fic. 42.—Anchor-like foot of sporophyte; X15. 
Fic. 43.—Median longitudinal section of apical cell; X50. 
Fic. 44.—Cross-section of cells in conducting bindandl X 520 
Fic. 45.—Median longitudinal section of region directly bark of apical 
cell showing differentiation of conducting cells; 520. 
G. 46.—Conducting cells showing pits; 520. 
Fic. 47.—Part of same; 1040. 
