GYALECTACEAE. 541 



Family 3. COENOGONIACEAE. 



1. COENOGONIUM Ehrenb. 



1. Coenogonium interplexum Nyl. Ann. Sci. Nat. IV: 16: 92. 1862. 



On trees, Abaco, vicinity of Cherokee Sound, and Andros, at Louisa CoDoice 

 near Nicholl's Town : — Costa Rica ; Colombia ; Venezuela. 



Family 4. PILOCARPACEAE. 



1. PILOCARPON Wainio. 

 1. Pilocarpon tricholoma (Mont.) Wainio, Lich. Bres. 2: 89. 1890. 

 Biatora tricholoma Mont. Ann. Sci. Nat. Ill: 16: 53. 1851. 

 Lecidea leucohlephara Nyl. Ann. Sei. Nat. IV: 19: 337. 1863. 



On leaves of Eugenia, Crooked Island, at Stopper Hill : — widely distributed in 

 tropical America. 



Family 5. LECANACTIDACEAE. 



1. LECANACTIS Eschw. 

 1. Lecanactis denticulata Wainio, Ann. Acad. Sci. Fenn. A: 6": 141. 1915. 

 Opegrapha acicularis Eiddle, Mem. Brooklyn Bot. Gard. 1: 110. 1918. 



On bark of Coccolohis laurifoUa, Great Harbor Cay, Berry Islands, and on 

 Eugenia buxifolia, AYatling's Island : — Florida ; Cuba ; St. Thomas ; St. Croix : Porto 

 Rico. 



It has only recently been possible for me to see a copy of Wainio's paper. His 

 description of L. denticulata differs from that of O. acicularis only in stating that 

 the base of the amphithecium is black, while I found it to be colorless in the mate- 

 rial that I examined : but the denticulate margin of the apothecia is so peculiar and 

 so characteristic that I am convinced that the plants are the same. Furthermore, 

 the acicular spores are identical, and Wainio has proposed a new section Bacidiactis 

 to receive this species. 



Family 6. GYALECTACEAE. 



Spores one-celled. 1, lonaspis. 



Spores two-celled. 2. Microphiale. 



1. lONASPIS Th. Fr. 



1. lonaspis trdpica Eiddle, sp. nov. 



Thallus crustaceus effusus tennissimus cum saxo eonferruminatus, fusces- 

 cens, minutissime farinosus, circa apothecia rimuloso-areolatus. Gonidia pauca 

 chroolepoidea. Apothecia caespitosa minuta, in areolis thallinis immersa, disco 

 primiim punctiforme dein aperto ad 0.3 mm. lato, concavo ant piano, castaneo 

 aut f uscescente, margine pallidiore integro tenue parum prominente persi?tente ; 

 epithecio fiilvo, excipulo et hypotheeio pallido. Asci clavati 8-spori. Sporae 

 incolores simplices ellipsoideae membrano tenue, 10-12 X 6-7 /x. 



On limestone, New Providence {Brace, November 20, 1918, 9697. type). 

 This species has the general appearance of lona.'^pis suaveolens (Ach.) Arnold, 

 but differs in the brown thallus and disk of the apothecium. 



2. MICROPHIALE Stizenb. 



1. Microphiale lutea (Dicks.) Steiner, Sitzungsber. kais. Akad. Wiss. Wien 

 106: 227. 1897. 



Lichen luteus Dicks. PI. Crypt. Brit. 1: 11. 1785. 

 Gyalecta lutea Tuck. Gen. Lich. 136. 1872. 

 On bark, New Providence : — widely distributed. 



