﻿44 



Order 112.— LICHENES. 



USNEA. 



barbata, Fr. 



a. florida, Fr. Trunks ; infertile. 

 /3. strigosa, Jich. Trunks ; fertile. 

 Ramalina. 



calicaris, Fr. 



i3. fastigiata, Fr. Trunks; fertile. 

 Nephroma. 



Helveticum, Jlch. Trunks ; fertile. 

 Peltigera. 



canina, Hoffm. Rotten trunks ; infertile, 

 horizontalis, Hoffm. Infertile. 



SOLORINA. 



Despreauxii, Montag. On the earth.'' 

 Sticta. 



aurata, Ach. Trunks ; infertile, 

 pulmonaria, Ach. Trunks ; infertile, 

 glomerulifera, Delis. Beech trunks ; fertile. 

 Parmelia. 



Sicbsect. I. — Imbricaria, Fr. 

 perforata, £ch. Trunks; fertile, 

 tiliacea, Ach. Trunks; fertile. 

 Borreri, Turn. 



f3. rudecta, Tuckerm. Trunks and rails ; fertile, 

 colpodes, Jlch. Trunks ; fertile, 

 caperata, Jlch. Rails ; fertile, 

 parietina, y. rutilans, Fr. Rails ; fertile. 



Suhsect. II. Physcia, Fr. 

 ciliaris, Ach. 



j5. galactophylla, Tuckerm. Dead branches of red 

 cedar ; Waynesville, fertile, 

 leucomela, Ach. With the last ; infertile.^ 



* By Mr. Edward Tuckerman. 



' Communicated to Dr. Montagne, and determined by him to be identical 

 with his species from the Canary Islands. 



^ This has the appearance of a narrow and linear-lobed variety of the last, 

 with which it also accords in its mostly simple fibres. It is, however, if I 

 mistake not, undistinguishable from the British P. leucomela, of which I have 

 specimens from Mr. Borrer ; and agrees generally with other specimens in 



