DEEMATOCAEPACEAE. 531 



Family 4. DERMATOCARPACEAE. 



Spores one-celled. 1. Dermatocarpon. 



Spores muriform-multilocular. 2. Endocarpon. 



1. DEEMATOCABPON Esehw. 



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



central point. 1. d. MouUnsii. 



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

 part of under surface. 

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



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



1. Dermatocarpon Moullnsii (Mont.) Zahlbr. in Eugler & Prantl, Nat. Pflan- 



zenfam. 1": 60. 1903. 



Endocarpon MouUnsii Mont. Ann. Sci. Nat. 11 : 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. Lieh. Suee. 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. Pr. Lich. Arct. 255. 1860. 



Endocarpon hepaticum Ach. Lich. TJniv. 298. 1810. 



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

 Point : — cosmopolitan. 



2. ENDOCARPON Hedw. ' 



1. Endocarpon pallidulum (Nyl.) Hue, Nouv. Arch. Mus. Hist. Nat. Paris III: 

 4: 106. 1892. 



Verrucaria pallidula Nyl. Flora 57: 73. 1874. 



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



Family 5. PARATHELIACEAE. 



Spores brown, plurilocular. 1. Parathelium. 



Spores colorless, muriform-multilocular. 2. Campylothelium. 



1. PARATHELIUM Nyl. 



Spores 34-40 X 11-16 u. 1. P. indutum. 



Spores 18-22 X 8-9 «. 2. P. microcarpum.. 



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



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

 Island, Long Island : — Cuba ; St. Thomas ; Porto Bico ; Colombia. 



2. Parathelium microcarpum Eiddle, sp. nov. 



Thallus crustaeeus uniformis effusus haud limitatus, cum eortiee maeulam 

 nitidam ochraceo-fulvam constitiiens, continuus laevigatus. Gonidia chroole- 

 poidea. Perithecia pyriformia, minuta ad 0.5 mm. longa, 0.3 mm. lata, Integra 

 nigra semi-innata parte emersa nudata, ostiolis lateralibus eollis breviusculis. 

 Paraphyses sparse ramosae. Asei 8-spori. Sporae fuscae ellipsoideae, ad apices 



