136 



Minnesota Plant Life. 



thrusting the end of the capsule out beyond the rim of the cone. 

 In this way each capsule scatters its spores under much more 

 advantageous conditions than were possible for the mud-flat 

 liverwort. 



The spermaries in the cone-headed liverwort are produced 

 upon short blunt branches arising at the tips of ordinary 



.^y 



I'k;. ^14. Tlic iiinbrill.i-livt Twort; sliowinj; tlic prostrate vegetative body, and the iiiirij;lu 

 l)raiiches on wliieli tlic egg-organs arc borne, and where later the capsnlar plants will 

 be found perching. After Atkinson. 



branches, but seeming to grow u])i>ii tlicir surface because they 

 are somewhat displaced in the after-gr( »\\ tli of the wliole sexual 

 plant-body. A cut made vertically thmugh one <>l' these sper- 

 mary branches would sliow a large number <>f oxoid sperm- 



pnxjucing nrgans appareiub imbedded in the general surface 

 of llieir s])ccial braiicli. 



