548 PAEMELIACEAE. 



2. COCCOCARPIA Pers. 



1. Coccocarpia pellita (Ach.) Muell. Arg. Flora 65: 320. 1882. 

 Parmelia pellita Ach. Lieh. Univ. 468. 1810. 



Thallus without isidia. 



Ilypothallus copious and extending beyond the lobes. a. var. pannosa. 



Ilypothallus medium or scanty. 



Lobes about 0.4-1.0 mm. wide, repeatedly pinnatifid- 



incised. b. var. genuina. 



Lobes 2-10 mm. wide, cuneate, subentire. 



Rhizoids blue-black ; apothecia blackening. c. var. parmelioides. 



Rhizoids partly white ; apothecia persistently pale 



brown. d. var. smaragdina. 



Thallus more or less isidiose. e. var. tenuior. 



la. Coccocarpia pellita var. pannosa Muell. Arg. Flora 65: 320. 1882. 



On trees, New Providence, at Lake Cunningham, and Crooked Island, at Vaux- 

 hall : Cuba ; Australia. 



lb. Coccocarpia pellita var. genuina Muell. Arg. Flora 65: 321. 1882. 



On trees, Watling's Island, near Cockburn Town : Cuba ; Porto Rico ; Brazil. 

 This represents the Acharian type and is well illustrated in Swartz Lich. Amer. pi. 6. 



lc. Coccocarpia pellita var. parmelioides (Hook.) Muell. Arg. Flora 65: 320. 



1882. 



Lecidea parmelioides Hook, in Kunth Syn. Plant. Orb. 162. 1822. 

 Coccocarpia molyodea Pers. in Gaudich. "Voy. Fran. 206. 1826. 

 Pannaria molyodea Tuck. Syn. N. A. Lich. 1: 124. 1882. 



On trees. Great Bahama, Abaco, New Providence : widely distributed in the 

 warmer regions of both hemispheres. 



Id. Coccocarpia pellita var. smaragdina (Pers.) Muell. Arg. Flora 65: 320. 



1882. 



Coccocarpia smaragdina Pers. in Gaudich. Voy. Uran. 206. 1826. 



On trees, New Providence, at Lake Cunningham : widely distributed in the 

 warmer regions of both hemispheres. 



le. Coccocarpia pellita var. tenuior (Nyl.) Muell. Arg. Flora 65: 322. 1882. 

 Coccocarpia molyodea var. tenuior Nyl. apud Krplh. Flora 59: 76. 1876. 

 On trees, New Providence, at Maidenhead Coppice : Porto Rico ; Mauritius. 



Family 13. PARMELIACEAE. 



1. PARMELIA Aeh. 



Margins ciliate. 1- P. urceolata. 



Margins naked. 



Medulla yellow. 2. P. sulphurata. 



Medulla white. 



Thallus greenish-straw-color. 3. P. jtava. 



Thallus gray or whitish. 



Medulla turning red when tested with caus- 

 tic potash. . . 

 Margins entirely without soredia. 4. P. Iatis8ima. 

 Margins more or less sorediate. 4a. P. latissimavar.cristtfera. 

 Medulla not red with caustic potash. 5. P. perlata. 



1. Parmelia urceolata Eschw. in Mart. Fl. Bras. 1 : 207. 1833. 



On trees, New Providence, along Soldier's Road : tropical South America and 

 Africa. 



