STICTA. 99 



Trunks and rocks, Grandfather mountain, N. Carolina, 

 Michaux, FL, 1803, and common throughout the southern States, 

 Eavenel, Hale; as, westward, to Ohio, Lesquereux; and, scarcely 

 less so, northward to Canada ; always infertile. Oregon, also 

 infertile, Hall. Mexico, Nylander. 



Michaux describes apothecia, which may probably have been 

 derived from some tropical specimen, whether of S. dameecornis, 

 as Nylander supposes, or of what we now should call S. quer- 

 cizans. The only Sticta, beside S. pulmonaria, seen by me in 

 herb. Michx. (Herb. Mus. Par.) which specimen is ticketed 

 'Lichen, Grandfather rnont.,' is clearly the ' varietas sterilis 

 marginibus pannoso-crispis ' of his Flora, and the common North 

 American state of the present species. It is only in the tropical 

 and austral regions of the earth that the lichen reaches its full 

 development. And here it exhibits so close a relationship to S. 

 damcecornis that the distinction of the two turns at length on 

 the systematic value we assign to the two sorts of gonidia. 



13. S. sylvatica (L.) Ach.; thallus cartilagineous-membrana- 

 ceous, deeply laciniate ; from greenish- becoming reddish-brown ; 

 beneath pale, villous, with urceolate, whitish cyphels; lobes dif- 

 form with repand or lacerate edges, now somewhat pitted, and 

 rather sparingly roughened with grey granulations; [apothecia 

 as in the next, Nyl.] Ach. L. U. p. 454. Nyl. Syn. 1, p. 3-18. 



Rocks among mosses. Catskill Mountains, New York (Peck), 

 Tuckerman Gen. 1872. Agrees with the European lichen, and 

 differs like that from the next, as from S. quercizans. The S. 

 sylvatica of Muhlenberg, and of Halsey, is doubtful ; as they did 

 not recognize the nearly akin lichen of Michaux. 



13(&). S- fuliginosa (Dicks.) Ach. ; thallus coriaceous-mem- 

 branaceous, orbiculate, round-lobed ; dark-lurid-grey ; beneath 

 pale, villous, with concave, whitish cyphels; lobes mostly very 

 entire, wrinkled, and besprinkled, at length densely, with black- 

 ish granules ; [apothecia, in a Welsh specimen from Mr. Borrer, 

 marginal, smallish, biatoroid, the reddish-brown disk soon con- 

 vex, and the thin, entire, paler margin disappearing. Spores 



fusiform, 2-4-locular. soon colourless, ^'f mic.] Ach. I c. Nyl. 



1. c. p. 347. 



Rocks and trunks. New England, Tuckerman Gen. 1872; 

 Willey. California, Bolander. Oregon, Hall. British Colum- 



