iQ ICONES MUSCORUM. 



base nearly half-way up, and more or less irregularly bifid 

 above. The peristome of D. Jlavicans is of a deep yellow color, 

 slightly twisted ; its teeth cloven to the base ; the segments 

 long, slender, and uniform. 



TAB. 29. — Desmatodon arenaceus. 



1. Planta? nnturali maguitudine. 



2. Planta fertilis. 



3. Ramus antheridiophorus avulsus suoque marte degens. 



4. Folium comale. 



5. Folium inferior caulis. 



6. 7. Areolatio folii apicis. 



8. Eadem basilaris. 



9. Sectiones transversales folii. 



10. Folia pericha?tialia, vaginula, arehegonium et paraph vsis. 



11. Capsula operculata et calyptrata. 



12. Eadem operculata. 



13. Eadem deoperculata. 



14. Peristomii dentes quatuor cum annuli particula. 



15. Peristomium verticaliter sectum. 



16. Sectio transversalis dentis peristomialis. 



17. Operculum cum columella? apice adherente. 



18. Folium perigoniale. 



