126 P ANN ARIA. 



mic. Coccocarpia, Tuckerm. Obs. Lich. I. c. 5, p. 402. Panna- 



ria, Nyl. Disp. Psor. & Pann. 



Upon Holly, Low country of South Carolina (Mavenel), Tuck- 

 erman I. c. 1862. Florida, Messrs. /. D. Smith, & Austin. Ala- 

 bama (Herb. Willey). 



The apothecia and spores refer the plant to the present sec- 

 tion, rather than the preceding. The thallus is also well -com- 

 parable with that of such specimens of P. motybdcea, v. incisa, 

 as are given in Lindig N. G. Coll. 2, n. 68 ; except in its at 

 length extreme narrowness and minuteness. 



****** Lecothecium. Thallus reduced ; squamulose-folia- 

 ceous ; and crustaceous ; the hypothallus mostly indistinct, or 

 obsolete. Medullary layer, when denned, of compact, elongated 

 cells. Gonimia more or less concatenate and distinctly gelati- 

 nous, with a Collemeine aspect. Apothecia lecanorine (n. 19, 

 20) or biatorine. Spores (except in 19) 2-4-locular. (Lecothe- 

 cium, Trevis. Pannarice sp., & Pterygium, Nyl.) 



19. P. Sonomensis, Tuckerm.; thallus small, irregular; 

 greenish-brown ; made up^of minute, discrete, elongated, linear, 

 many-cleft lobes, of which the central are teretish and inter- 



jtangled, and the outer ones expanded; beneath whitish, and 

 naked, the hypothallus being obsolete ; apothecia very small, 

 lecanorine ; the entire margin finally excluded ; and the reddish- 

 brown disk blackening. Spores fusiform, curved, simple, de- 

 colorate, ^f mic. Obs. Lich. I. c. 12, p. 169. 



Granitic and other rocks, Sonoma, and Yosemite, California 

 (Bolander), Tuckerman I. c. 1877. 



20. P. stenophytta, Tuckerm.; thallus minute, orbiculate, 

 stellate-expanded ; greenish-brown ; lobes terete, those of the 

 circumference radiant, and branching ; the central ones squam- 

 ulose-granulose, falling away at length and leaving the zoned 

 periphery; beneath pale without apparent hypothallus; apo- 

 thecia very small, lecanorine ; the disk brown ; the margin soon 

 disappearing. Spores ellipsoid and oblong, somewhat Curved, 

 bilocular, decolorate, ^ mic. Obs. Lich. I. c. 12, p. 169. 



Calcareous rocks growing intermingled with the next, Ala- 

 bama (Peters), Tuckerman I. c. 1877. Apothecia appearing 



to be now zeorine ; and so not impossibly biatorine also, at last. 



