PANNARIA. 125 



rather entire lobes similarly differenced ; from pale whitish- 

 passing into brownish- and dark-leaden gray ; upon a hypothal- 

 lus like that of the last ; apothecia from smallish at length 

 more than middling-sized, biatorine, appressed, soon rather 

 applanate and ample, convex, immarginate ; disk from reddish- 

 orange or chestnut becoming black. Spores ellipsoid and cym- 



biform, bi - nucleolate, decolorate, -|^ mic. Tuckerm. Gen. 



Lich. p. 52. Lecidea Parmelioides (Hook.} Mont. Cuba, p. 192. 

 Coccocarpia, Tuckerm. in Wright Lich. Cub. n. 104-107. 



b. cronia, Nyl. ; lobes beset, at length densely, with isidioid 

 branchlets; the marginate apothecia white-flbrillose beneath. 

 Spores as in a. Parmelia cronia, Tuckerm. Syn. N. E. p. 36. 



c. incisa, Nyl. ; lobes narrowed, discrete more or less at the 

 circumference, and many-cleft; at the centre isidiophorous. 



[Apothecia now as in a, and now as in b.] Nyl. in Prodr. N. 



Gran. p. 27 & Lindig herb. n. 2538. Coccocarpia incisa, Pers., 

 Mont, in Ann. Sci. 



Trees, bushes, and dead wood; a tropical lichen, but ex- 

 tending throughout the United States ; Tuckerman in Darlingt. 

 FL Cest. 1853. Texas, Wright. Louisiana, Hale. Alabama, 

 Beaumont. Florida, Austin. South Carolina, Eavenel. Penn- 

 sylvania, Michener. Western New York, Sartwell. b, Rocks, 



and also trunks, etc., commonly infertile; from New England 

 to Virginia, Tuckerman Syn. N. E. 1848. Illinois, fertile, Wolf. 

 North Carolina to Texas, Eavenel. Alabama, fertile, Peters. 

 Louisiana, Hale. As also Cuba, Wright; and New Granada, 



Lindig. c, Trunks, Florida, Eavenel. This species is 



closely akin to the preceding, but is differenced by the apo- 

 thecia, and the spores. The colours are perhaps also a little 

 unlike; but the present becomes remarkable in the tropics 

 (where the other is wanting) for a certain luxuriance (Coccocar- 

 pia incisa, ciliolata, etc., of authors) which, rare enough in the 

 northern lichen, is far from surprising in the tropical. 



18^ P. stellata (Tuckerm.) Nyl.; thallus minute, orbiculate, 

 membranaceous ; lead-coloured; the very narrow, linear, and 

 flat lobes discrete, radiant, and many-cleft at the circumference, 

 but becoming at the centre densely imbricated, and dentate- 

 lobulate; white, and white-fibrillose beneath; apothecia very 

 small, sessile ; with a reddish-brown disk ; white fibrillose below. 

 Spores ellipsoid, as in P. molybdcea, but small, decolorate, -^- 





