L I C H E N E S. 141 



and if it shall prove to be identical in species with the other just men- 

 tioned, it may be taken for the Parmeliaceous type of a species mainly 

 represented by aberrant Everniaceous forms. The spores of the In- 

 dian and South American lichens referred above to P. Camtschadalis, 

 are smaller than those of the Hawaian Lichen, and less ovoid ; 

 their protoplasma is commonly less simple, developing not unfrequently 

 into two or more oily globules (sp. oleoso-mo?toblastce, Koerb.) 



Figure 1 exhibits the habit of the Lichen, in the largest specimen or 

 clump which was obtained ; Figure 2, a specimen with apothecia ; and 

 Figure 3, one showing the under side, all of natural size. The other 

 figures are by Mr. Sprague : — 4, showing a large apothecium cut length- 

 wise, the spore-bearing layer and hypothecium, as they appear, slightly 

 magnified ; 5, a portion of the inner part of the same, highly mag- 

 nified, the medullary layer at the bottom appearing well defined at 

 its point of union with the close tissue of the hypothecium, and the 

 latter at least equally distinct where it appears to receive the vertical 

 paraphyses and spore-sacks (thecal) ; 6, a single spore-sack, with seve- 

 ral paraphyses, and containing six mature spores. 



5. Parmelia physodes, (Linn.) Ach. 



Lichen phi/sodes, Linn. Fl. Suec. n. 1081 ; Sm. E. Bot. t. 126. 



Parmelia phi/sodes, Ach. Lichenogr. p. 492 j Syn. p. 218; Montag. Canar. 1. c. p. 

 119 ; Tuckerm. Lich. Exs. n. 72 j Nyl. Prodr. p. 56. 



Hab. New Zealand. 



Var. vittata (Ach.) : laciniis effusis linear ibus subproliftcantibus planius- 

 c ulis nigro -margina tis % 



Hab. Pico Ruivo, Madeira. 



Var. enteromorpha (Tuckerm.) : laciniis effusis laxis ventricoso-inflatis ; 

 apotheciis ventricoso-cyathiformibus demum explanatis. 



Parmelia enteromorpha, Ach. Lichenogr. p. 494; Syn. p. 219. 



Parmelia phi/sodes, var. enteromorpha, Tuckerm. Synops. N. E. p. 28, & Lich. Exs. n. 

 73 ; Nyl. Enuni. Gen. 1. c. p. 104. 



Hab. Fort Nesqually, and Puget Sound, Oregon. 



36 



