Mosses and Lichens 



The spore-cases are erect and symmetrical on a short pedicel 

 and are immersed in the leaves. They have distinctly formed, 

 beaked lids, which are not easily detached. There are no teeth. 



The generic name Astomum, from a, privative, without, and 

 crrofia, a mouth, was given because when first known this moss 

 was supposed to have no lid. 



There are seventeen species in all. 



Bract. 



Sporophyte. 



Upper leaves. 



Papillose leaf. Veil. 



Astomum Sullivantii. 



Leaves. 



Astomum Sullivantii, Schimp. 



Habit and habitat. In fields and gardens, living from year to 

 year. 



Name. The specific name Sullivantii was applied to this 

 moss by Wilhelm Philipp Schimper, in honour of William S. 

 Sullivant, a noted bryologist. 



Plant (gametophyte) . Minute, simple, or branched. 



Leaves. The lower leaves small, narrowly oval; the upper 

 narrowly lance-shaped, densely tufted, covered on the back with 

 tiny projections papillosa; curled in various directions when dry; 

 apex pointed; margins rolled in; vein round, extending beyond 

 the apex of the leaf-blade (percurrent) . 



Habit of flowering. Male and female flowers on the same 

 plant (monoicous). 



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