24 RAMALINA. 



Trees, etc. , Louisiana, Mutter Arg. 1. c. Texas, Wright ; Eave- 

 nel. A short, broad form, with the aspect of E. calicaris, v. 



fraxinea, is found on dead wood in South Carolina, Eavenel. 



The narrowest forms are scarcely to be separated from E. rigida, 

 b, Montagncei, to which I had also (in herb.) referred the wider 

 one, in part ; but the latter is in fact better comparable with E. 

 laevigata. 



8. E. l&vigata, Fr. ; thallus tufted, at length rather elongated, 

 complanate, smooth or longitudinally striate; dividing at the 

 stalked base into a few, sub-simple, lanceolate lobes ; apothecia 

 small to middling-sized, flat, scattered on the upper side of the 



lobes. Spores ellipsoid, and oblong-ellipsoid, ^ mic - $ 0- 



V. p. 283. Tuckerm. in Bot. Wilkes exped. p. 129. E. calicaris, 



/. Eckloni, Nyl. Syn. 1, p. 295. E. Yemensis, Nyl. Eecogn. 

 Eamal. p. 46. 



Trees ; Texas, and New Mexico ( Wright), Tuckerman Calif. 

 1866. r-An easily recognizable lichen, widely diffused through- 

 out the warmer regions of the earth. Thallus with us scarcely 

 exceeding 3 in. in length. Apothecia l mm - to scarcely 3 mm - wide. 



9. E. Menziesii, Tuckerm. ; thallus much compressed and 

 rather membrauaceous, or now at length more rigid, linear, origi- 

 nally channelled, and puberulent, but soon smooth ; sparingly 

 branched, the elongated, sub-simple, flexuous branches becoming 

 lacunose and here and there finally foramiuous ; apothecia mar- 

 ginal, middling to ample, sub-pedicellate, the margin incurved. 



Spores oblong, a little curved, ^ mic. Tuckerm. Syn. N. 



Eng. p. 12, not of Taylor. E. leptocarpha, Ejusd. Suppl p. 423. 



Trees; California (Me?m'es), Tuckerman I.e. 1848. The 



full history of this very distinct lichen is not yet ascertained. 

 The longest specimens seen are 4-5 inches in length, and from 2 

 to 5 mm - wide. Apothecia 3-8 mm - in width. 



10. E. complanata (Sw.) Ach. ; thallus tufted, flattened, 

 smooth or now striate, besprinkled with minute papillseform 

 tubercles ; either shorter and wider, dividing below into a few, 

 sub-simple, linear lobes, or narrower, and at length densely 

 branched, the channelled branches constricted more or less above 

 into teretish and longitudinally pitted, or finally filiform tips ; 

 apothecia marginal, middling-sized. Spores ellipsoid, and oblong- 

 ellipsoid, often a little curved, ^ mic. Lichen, Sw., ex. Ach. 



