CLADONIA. 239 



also decorticate, or beset only with isidioid granules. Eschw. 



Bras. p. 280. Nyl. Syn. 1, p. 191. Cenomyce, Ach. L. U. p. 

 533, & in Siv. Lick. Amer. t. 12, f. 1. 



A native of the forests of tropical America j in Jamaica, 

 Swart z ; and in Mexico, Nylander, Syn. 1858. It is also cited 

 as occurring in the islands of Tristan d'Acunha, and Bourbon^ 

 and in the mountains of India, Nyl. 



b. Fuscescentes. ^Thallus squamulose; only exceptionally 

 macrophylline ; from grayish-green becoming ash-coloured, and 

 brownish. ~ Podetia largely exhibited and at length richly- 

 developed j either club-shaped, or cup-shaped. 



f Podetia club-shaped (n. 4-7). 



4. C. symphycarpa, Fr. ; thallus squamulose, rather con- 

 spicuous, round-lobed, soon elongated, and becoming ample, 

 and brownish-green ; podetia short, but more elongated in the 

 macrophylline state, in which they also pass above into several 

 branchlets ; smoothish j of the colour of the thallus ; apothecia 



confluent, brown. Fr. Nov. Sched. crit. cit. Th. Fr. Scancl. p. 



89; Licli. Suec. exs. n. 232. C. pyxidata, v. symphycarpa, Fr. 

 Summ. Nyl. Scand. p. 50. Th. Fr. I. c. 



b. epiphylla (Ach.) Nyl.; podetia excluded; the apothecia 

 seated on the squamules. Nyl. Scand. p. 50. 



On the earth. Middle States, Muhlenberg Catal. 1818 j Peck ; 

 Austin ; etc. : Illinois, Hall. Wisconsin, and Minnesota, Lap- 

 ham. Virginia, Tuckerman. South Carolina, Ravenel. Ala- 

 bama, Peters. Louisiana, Hale. Texas, Wright. Fries's 



later opinion that this Cladonia is to be taken for an abortive 

 condition of C. pyxidata, has been generally accepted ; but the 

 plant deserves perhaps to stand alone quite as well as the next 

 following numbers, which are now as generally received. It is 

 better exhibited here (so far as appears) than in Europe. 



5. C. Mitrula, Tuckerm. ; thallus squamulose, the thick 

 squamules small to minute, often glebous, rounded and sub- 

 entire, but becoming at length somewhat extended and crenate- 

 lobate, pale-green ; podetia short, slender, almost always simple, 

 granulate - verruculose ; glaucescent; apotheeia heaped and 

 confluent ; from flesh - coloured becoming pale - brown (now 



darker). Tuck, in Darlingt. Fl Cestr. edit. 3, p. 444. Nyl. 



Syn. p. 203. C. imbricatula, Nyl. in Flora, 1858, p. 378. 



