DEEMATOCAEPACEAE. 531 



Family 4. DERMATOCARPACEAE. 



Spores one-celled. 1. Dermatocarpon. 



Spores niuriforin-multilocular. 2. Endocarpon. 



1. DERMATOCARPON Eschw. 



Thallus mostly over 10 mm. in diameter, attached by a single 



central point. 1. D, Moulinsii. 



Thallus mostly under 5 mm. in diameter, attached by greater 

 part of under surface. 

 Thallus reddish, margins free. 2. D. lachncum. 



Thallus brown, margins adnate. 3. D. hepaticum. 



1. Dermatocarpon Moulinsii (Mont.) Zahlbr. in Engler & Prantl, Xat. Pflan- 



zenfam. I 1 * : 60. 1903. 



Endocarpon Moulinsii Mont. Ann. Sci. Nat. II: 20: 358. 1843. 



On rocks, New Providence and Cat Island, at Orange Creek :- France ; Texas ; 

 India. 



2. Dermatocarpon lachneum (Ach.) A. L. Sm. British Lich. 2: 270. 1911. 



Lichen lachneus Ach. Lich. Suec. Prodr. 140. 1798. 

 Endocarpon rufescens Ach. Lich. Univ. 304. 1810. 



On sand. Great Sturrup Cay, Berry Islands : widely distributed in North 

 America and Europe. 



3. Dermatocarpon hepaticum (Ach.) Th. Fr. Lich. Arct. 255. I860. 



Endocarpon hepaticum Ach. Lich. Univ. 298. 1810. 



On the ground, Abaco, at Old Kerr's Point, and Acklin's Island, at Spring 

 Point : cosmopolitan. 



2. ENDOCARPON Iledw. 



1. Endocarpon pallidulum (Xyl.) Hue, Xouv. Arch. Mus. Hist. Nat. Paris III: 

 4: 106. 1892. 



Verrucaria pallidula Nyl. Flora 57: 73. 1874. 



On limestone (mixed with Scytoncma), New Providence: Cuba; Peru; Japan. 



Family 5. PARATHELIACEAE. 



Spores brown, plurilocular. 1. Parathelium. 



Spores colorless, muriform-multilocular. . 2. Campylothclium. 



1. PARATHELIUM Nyl, 



Spores 34-40 x ll-16 u . 1. P.indutum. 



Spores 18-22 x 8-9 u- 2. P. microcarpum. 



1. Parathelium indutum Xyl. Bot. Zeit. 20: 279. 1862. 



On bark. Conception Island, Berry Islands. Stocking Island, Great Exuma, Cat 

 Island, Long Island : Cuba ; St. Thomas ; Porto Rico ; Colombia. 



2. Parathelium microcarpum Eiddle, sp. now 



Thallus crustaceus uniformis effusus hand limitatus, cum cortice maculam 

 nitidain ochraceo-fulvam eonstitueiis, continuus laevigatus. Gouidia chroole- 

 poidea. Perithelia pyriformia, minuta ad 0.5 mm. longa, 0.3 mm. lata, integra 

 nigra semi-innata parte emersa nudata. ostiolis lateralibus collis breviusculis. 

 Paraphyses sparse ramosae. Asci 8-spori. Sporae f uscae ellipsoideae, ad apices 



