ioo NOTES OF A BOTANIST CHAP. 



' Some genera of mosses, absent in the plains, 

 began to appear in the lower forest zone of the 

 Andes. For example, those splendid mosses of 

 the genera Phyllogonium, Rhacophilum, and Hypo- 

 pterygium, all of which, by their primary leaves 

 arranged in double rows, and in the latter- named 

 genera accompanied by stipulated folioles, appeared 

 at first sight to be Hepaticse rather than true mosses. 

 Among other mosses which are met with in the 

 Andes of Peru, but which are never found in the 

 plain, are Helicophyllum, Disticophyllum, Cryphaea, 

 Pterobryum, Entodon, Fabronia, etc. The Tortulse, 

 represented along the banks of the Amazon, but 

 very rarely, by the single T. agraria, begin to be 

 less scarce ; also the genus Bryum, of which the 

 B. coronatitin and a barren form of B. argenteum are 

 the only species found on the Amazon. 



"With regard to the Hepaticse, while the Lejeuneae 

 are almost as abundant as upon the banks of the 

 Amazon, and still show the same preference for the 

 living leaves of trees, the Frullanise, of the sub- 

 genus Thyopsiella (which are related to our F. 

 tamarisci\ appear there for the first time. Among 

 other genera of the Eastern Andes which are 

 never seen in the plains may be named Porella, 

 Herberta, Mytilopsis, Adelanthus, Leioscyphus, 

 Jungermannia, Scalia, Marchantia, Dendroceros, 

 and Anthoceros. Lepidozia, which is represented 

 in the plain by a microscopic species (and that 

 found only once !), is met with in the mountains of 

 Tarapoto in the form of large and elegant species." 



On examining Spruce's descriptive catalogue 

 of the plants which he collected, and which are 

 numbered consecutively, I find that there are 



