386 PROCEEDINGS OF THE AMERICAN ACADEMY 



flava ; lobis coraplicatis ; apotheciis majusculis aurantiacis confertissimis. 

 Farm, parietina, f. Fr. Lichenogr. p. 73, & Lich. Suec. n. 106 ; Schaer. 

 Spicil. p. 477 ; Koerb. S. L. Germ. p. 91. On trees. Arctic Amer- 

 ica (the specimens intensely colored, and approaching S), Richardson 

 (Hook, in Frankl. Narr. p. 760). New England, common on apple- 

 trees, a conspicuous Lichen, -which has passed here for var. rutilans, 

 but differs in no I'espect from Fries's specimen above cited, except 

 greater size. Ohio, Lea. Lake Superior, Prof. Agassis. Wisconsin 

 and Minnesota, 3fr, Lapham. New Mexico (intensely colored, like 5), 

 Mr. Fendler. California (on Live Oak), Mr. Wright. The apothecia 

 in this are sometimes fibrillose beneath, as in the next. 



Var. y. LYCHNEA, SchfEr. : microphyllina, suborbicularis, fulva, lobis 

 planis laciniatis apice palmato-incisis crenatis margine adscendentibus 

 pulverulentis granulosis ; apotheciis majusculis aurantiacis. On trees, 

 Cambridge. On trees and stones, IjDSwich, Mr. Oahes. The specimens 

 on stones are regularly orbicular, substellate, of the common pale-yellow 

 color of a, and differing in the narrower, divided lobes, which consider- 

 ably resemble those of var. ectanea, Ach., Schaer. (Zw. Exs. n. 57), to 

 which our plant might perhaps well be referred, notwithstanding that 

 the margins are more ascendent, and much more granulate ; but the 

 latter passes into states which I cannot well distinguish from the present 

 variety. This development is seen in the higher-colored tree-specimens, 

 in which the erectish, densely-granulate margins of the pulvinate thal- 

 lus give quite a crustaceous aspect to the Lichen, which resembles, often 

 also in color, the \ax. fulva, Schter. Lich. Helv. n. 383, which is hardly 

 other than a state of his var. lychnea, n. 549. A specimen from Ba- 

 varia {Physcia controversa, Massal., Koerb. Pai'erg. L p. 38), which I 

 owe to the kindness of Mr. Von Krempelhuber, is larger and better 

 developed than my specimens of the Swiss Lichen ; but the American 

 surpasses even that as a well-marked form of P. parietina. The spores 

 of our plant are entirely those of the species ; varying in size, but often 

 as large as in any form. The base of the apothecia is often fibrillose. 

 On cedars, Inscription Rock (Pacif. R. R. Survey), Dr. Bigehw. 

 Lobes flat, wide, but truncate, and irregularly heaped, the margins 

 scarcely ascendant, and naked in the specimens. On charred wood. 

 New Mexico, Mr. Fendler. With much the aspect of at least one of 

 the specimens of Schjer. Lich. Helv. n. 382 (P. candelaris), which I 

 cannot but refer here ; the learned author not distinguishing his vai*. 



