64 



ICONES MUSCORUM. 



Very like the European PtyclwmUrimn jmsillum; but that 



species has the teeth of its peristome divided, above their broad 

 lanceolate-deltoid base, into two unequal filiform crura. 



TAB. 39. — Ptychomitrium incurvum. 



1. Flantse naturali magnitudine. 



2. Planta fertilis. 



3. 4. Folia caulina. 



5, 7. Areolatio folii baseos. 



6. Eadem apicis. 



8. Sectiones transversales folii. 



9. Capsula calyptrata. 



10. Capsula deoperculata. 



11. Pcristomii dentes qnatuor. 



12. Sectio verticalis pcristomii. 



13. Operculum. 



14. Inflorescentia. 



15. Folium perigoniale cum antheridiis. 



16. Folium perigoniale. 





