— iS— 



branches. The pedicels and capsules are a dark red when ripe, 

 and the lid and annulus are large and make beautiful objects under 

 the microscope, as well as the peristome. 



Bryum roseum {Rhodobryum proliferum) is the largest and 

 showiest of our Bryvms, forming rosettes of leaves at the summits 

 of the erect stems which arise from creeping stolons, and are 

 almost leafless below. Only under favorable circumstances does 

 this species form mats or cushions; usually the plants are scat- 



DESCRIPTION OF PLATE. 



Bryum argenteum.—\. Plant, natural size. 2-5. Outlines of leaves. 6. 

 One leaf enlarged, showing cells. 7. Cross-section. 8. Antheridial head, 

 g. Bract. 10. Antheridiumandparaphysis. n. Youngcapsule with calyptra. 

 12. Old capsule. 13. Calyptra. 14. Lid. 15. Vaginule at base of seta. 16. 

 Peristome. 17. Portion of peristome, with two teeth, two keeled segments 

 and cilia. 18. Annulus 19. Spores. 



