PLATE III. 



Figs. 



1. Schistostega (Moss). A dichotomously-branched stem 



of a male plant. (After Hagen.) p. 41. 



2. Andresea nivalis var. (Moss). A leaf showing unequal 



dichotomy. (After Gyorrfy.) ' p. 48. 

 3, 4. Hypnum serpens (Moss). Fig. 3. — A protonema- 

 thread springing from the cut end of a piece of the 

 seta. (After Pringsheim.) p. 53. Fig. 4. — A 

 pro tonema- thread arising from the single layer of 

 the middle cortex of the seta. (After Pringsheim.) 

 p. 53. 



5. Molendoa HornseJtuehiana (Moss). An endorhizoid 



(r) growing from the foot of the seta through the 

 tissues of the gametophyte. (After Gyorrfy.) p. 54. 



6. Bryum pendulum (Moss). " Podosyncarpy " ; one 



half of the double capsule fully developed, the other 

 half (x) abortive. (After Gyorrfy.) p. 58. 



