144 CRTPTOGAMIA. 



Physcia parietina, Koerb. Syst. Lich. Germ. p. 90 ; Nyl. Prodr. p. 60. 



Hab. Madeira. 



4. Physcia leucc-mela, (Linn.) Michx. 



* 



Lichen leueomelas, Linn.; Sw. Obs. Bot. tab. 11, f. 3, cit. Ach. 



Physcia leueomelas, Michx. Fl. Amer. 2, p. 326 ; Nyl. Enum. 1. c. p. 106. 



Parmelia leucomela, Ach. Meth. p. 256; Fr. Lichenogr. p. 76; Montag. Canar. 1. c. 



p. Ill j Chil. 1. c. p. 136. 

 Borrera leucomela, Ach. Lichenogr. p. 499; Syn. p. 222. 



Hab. Obrajillo, Andes of Peru, and near Lima. Lagunas and Val- 

 paraiso, Chili (var. latifolia, Mey. & Flot. in Nov. Act. Nat. Cur. 19, 

 Suppl. p. 221, tab. 3, f. 8). Hawaii. Bay of Islands, New Zealand. 



5. Physcia comosa, (Eschw.) Nyl. 



Parmelia comosa, Eschw. Bras. 1. c. p. 119, & Ic. Sel. Crypt, tab. 13, f. 1. 



Physcia comosa, Nyl. Enum. 1. c. p. 106. 



Parmelia galactophylla, Willd. herb. 



Parmelia ciliaris, var. galactophylla, Tuckerm. Syn. Lich. N. E. p. 32. 



Parmelia speciosa, var. galactophylla, Tuck. Lich. Exs. n. 82. 



Hab. Rio Janeiro. — Probably what Hoffmann refers to (Fl. Germ. 

 2, p. 144, his specimens being from Muhlenberg) as a variety of P. 

 ciliaris. And this appears, from his herbarium, to have been Floerke's 

 opinion of the Lichen from Pennsylvania. But I possess specimens 

 which seem to connect the plant very closely with P. speciosa. 



6. Physcia applanata, (Fee) Nyl. 



Parmelia applanata, Fee, Cryptog. p. 126, tab. 32, f. 2 ; Montag. Cuba, 1. c. p. 223, 



tab. 8, f. 1. 

 Physcia applanata, Nyl. Enum. Gen. I. c. p. 107. 



Hab. Twigs of trees, Carlshoff Island, Paumotu Group. A frag- 

 ment, and infertile, but with the peculiar habit of this species. Accord- 

 ing to Dr. Montagne, the Lichen described by Prof. Fee, and himself, 

 should be referred to Parmelia pieta (Sw.) Ach. (Montag. Syll. pp. 

 328-9.) 



