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SELECTED ARTICLES. 
plants. These belong to four orders or families, — namely, 
Musci, Lichenes, Hepaticae, and Fungi. 
1. Musci, or Mosses. — We frequently find mosses on Cin- 
chona barks; but as they are never met with in fructification, 
it is almost impossible to determine the genus to which they 
belong. They are probably species of Hypnum. 
2. Lichenes. — These are found in great abundance, espe- 
cially on the species called Loxa or Crown bark (the finest 
kind of pale bark.) We may conveniently arrange them 
according to Zenker, in four sections: 
Sect. 1. Coniolichenes, or the pulverent lichenes (Lichenes 
pulveracei.) — In this section we have the Hypochnus rubro- 
cinctus (classed among the Fungi by Fee.) I have frequently 
found it on the finest specimens of quilled yellow bark. 
Sect. 2. Cryolichenes or the crustaceous lichenes (Lichenes 
crustacei.) — These frequently put on very beautiful forms, 
and so color the surface of the epidermis, that they appear to 
constitute a part of this coat. In that kind of pale bark 
usually called gray, or silver, the surface of the epidermis has 
a whitish cretaceous appearance, from the presence of various 
species of Arthonia and Pyrenula. 
Sect. 3. Phyllo lichenes, or the foliaceous lichenes (Lichenes 
foliacei.) — These are found most abundantly on the Crown 
or Loxa bark. The most common species belong to the 
genera Parmelia, Sticta, and Collema. The P. coronata is a 
beautiful species, and one frequently met with. So also the 
Sticta aurata, remarkable for its yellow color. 
Sect. 4. Drendrolichenes, or the filamentous lichenes 
Lichenes fruticosi.) — The Usneas are good examples of this 
section: they are found in abundance on the Crown bark. 
Two species are met with — U. Florida, and U. barbata; a 
variety of the latter is curiously articulated. 
3. Hepaticse. — Jungermannias are found on Cinchona barks 
but in too broken a condition to determine their species. F6e, 
however, examined Humboldt's Herbarium, and found four. 
4. Fungi. — As Fungi usually grow on weakly or dead trees, 
