96 STICTA. 



7. S. aurata (Sm.) Ach. ; thallus ample, coriaceous-mem - 

 branaceous, broadly and deeply lobed, smoothish ; from greenish- 

 glaucescent soon reddening, and brownish-red, or at length 

 rose-red; lemon-coloured within; beneath villous, tawny be- 

 coming of much the same colour at the circumference but black- 

 ening towards the middle, with minute sorediiform cyphels; 

 lobes sinuately cut, with soon waved and crisped and yellow- 

 powdery edges ; apothecia [in Cuban and Brazilian specimens, 

 ample, marginal, oblique, membranaceous ; the disk dark-pur- 

 plish; the narrow, sub-entire margin more or less inflexed. 



Spores irregularly fusiform, 4-locular, fuscescent, 2l & *- mic.] 



Fr. L. E. p. 50. Parmelia Eschw. Bras. p. 216. Sticta, Nyl. 

 Syn. I, p. 361. 



Among mosses on trunks and rocks, always infertile. Tuck- 

 erman Syn. 1848; from the south shore of Massachusetts, 

 Willey, Pennsylvania, Michener, and Ohio, Lea, to the Carolinas 

 and Georgia, Ravenel, the Gulf States, Hale, Wright, etc. ; and 

 Mexico. 



f f Thallus ivithout cyptiels, but varied for the most part be- 

 neath with pale, naked spots. 



8. S. pulmonaria (L.) Ach.; thallus coriaceous, ample, 

 loosely extended, lacunose-reticulate ; tawny- olivaceous, and 

 dark- tawny ; (now sorediiferous, or also isidiophorous) beneath 

 sparingly brown-villous in veins between pale naked spots; 

 lobes elongated, deeply, at length narrowly, sinuate -lobate, 

 with retuse-truncate ends ; apothecia sub-marginal, middling- 

 sized ; the disk red-brown ; the thin, entire or wrinkled, finally 

 concolorous margin at length excluded. Spores cymbiform, 2- 



4-locular, colourless when free, ^jj mic. Ach. L. U. p. 449, 



nom. emend. Fr. L. E. p. 53. Tuck. Lich. cxs. n. 68. Nyl. 

 Lich. Scand. p. 95. 



b. hypomela, Del. ; the veins of the under side black. 



Del. Stict. p. 144. 



c. linita, Nyl. ; the orbiculate thallus round-lobed, with cre- 

 nate at length lobulate ends ; less lacunose ; and of much the 



same colour beneath. Nyl. Lich. Scand. p. 96. S. linita, 



Ach. Syn. p. 234. Nyl. Syn. (S. Garovaglii, Schcer. incl.) p. 353. 



Trees and rocks. A common northern lichen from Pennsyl- 

 vania, Muhlenberg Catal. 1818, to Newfoundland, Pylaie, and 

 westward to Wisconsin, Lapham. Southward it follows the 



