MITELLA, 



DiPH YLI.A Bishop's Cap 



MIMULUS, 



ALATus Monkey Flower 



RiNC^NS Monkey Flower 



Jamesii Monkey Flower 



MOLLUGO, 



VERTiciLLATA Carpet Weed 



MONARDA, 



DiDYMA Oswego Tea 



i^iSTULOSA Red Burgamot 



PUNCTATA Horse Balm 



MOSSES, 



TuNGERMANIA 



Hypnum-adustum 

 Desmatodon-avenacens 

 Bartrania-ponisfomies 

 Cylindesthesium-seductria 



PoivYTRICHIUM-EORMOSUM 



Hypnum-tamarissimum 



Merchantia-Polymorphia 



Deeuhorn-Mushroon. 



Mosses are interesting- on account of the 

 important part they play in the economy of 

 nature. The mossy coverinsj^s of the forest 

 collect the rainfall like a sponge, holding back 

 excessive torrents ; while the bog moss forms 

 peat and other mosses grow on rocks produc- 

 ing by decay a thin layer of humus in which 

 the seeds of higher plants take root. They 

 have capacity to endure droughts and of sus- 

 pending their growth in dry and resuming it 

 again in moist weather. Among plants none 

 of a higher order are closely allied and the 

 chasm which divides mosses from all other 

 plants, is the widest in the whole vegetable 

 kingdom. 



62 



