98 ICONES MUSCORUM. 



Small forms of Tetraplodon angustatus B. Sf S., and Splachnum 

 ampullae eum Linn., closely resemble this species. The first, how- 

 ever, has a dimidiate calyptra, extending to the base of the spo- 

 rangium, and only a monoicous inflorescence ; the second has 

 broader and less attenuated leaves, narrowed at the base, and an 

 exserted capitate columella in the dried capsule : in both the 

 apophysis of the capsule is much larger, particularly in the last, 

 where it is of a deep purple color. 



TAB. 58. — Tetraplodon australis. 



1 . Plantae naturali magnitudine. 



2. Planta cum inflorescentia monoica. 



3. 4. Folia. 



5, 6. Areolatio basilaris et apicalis folii. 



7. Capsula apophysata, pedicellus, et vaginula. 



8. Sectio transversalis pedicelli. 



9. Peristomium. 



10. Ejusdem duo dentes adhaerentes. 



11. Calyptra. 



12. Operculum. 



13. Flos masculus axillaris. 



14. Antheridia et paraphyses. 



