196 ICONES MUSCORUM. 



This species is a true Amblystegium, Bryol. Europ., and re- 

 sembles very closely Ambtystegium Spruceii (Hypnum Conferva, 

 Drumm. Muse. Amer. No. 190; Platydictya Spruceii, Berk.), 

 particularly in its normally asymmetrical and cernuous capsule ; 

 differing mainly in the inflorescence, which in the latter species 

 is dioicous. 



Ambtystegium confervoides, Bryol. Europ., another very nearly 

 related species, is a larger and more rigid plant, has a more pin- 

 nate ramification, longer and thicker branches, and leaves more 

 crowded, appressed when dry, entire on their margins, and of a 

 closer areolation : its capsule also is oblong and incurved. 



Two other species of Amblystegium, A. subtile and A. tenuis- 

 simum are near allies of our plant ; the first, however, is larger, 

 and has shortly bicostate and entire perichsetial leaves, an oblong- 

 capsule, and a peristome without ciliolae ; in the second species 

 (not found in this country) the capsule is oblong and erect, the 

 perichaetial leaves are costate beyond the middle, and the annulus 

 is absent. 



TAB. 120. — IIypxum minutissimum. 

 1. Planta naturali magnitudine. 

 • 2. Planta capsuligera et antheridiophora. 



3. Pars ramuli. 



4. Folia. 



5. Folium areolationeni exhibens. 

 <i. Folia perichaetialia. 



7. Capsula opcrculata. 



8, 9. Capsulse humidse deoperculatse. 



10. Esedem sicca? evacuatae. 



11. Particula peristomii. 



12. Dens ejusdem a latere visus. 



13. Operculum. 



14. Calvptra. 



]'>. Flos masculus. 



1C. PenVoniale et antheridium. 



