DERMATOCARPACEAE. 531 



Family 4. DERMATOCARPACEAE. 



Spores one-celled. 1. Dermatocarpon. 



Spores muriform-multilocular. 2. Endocarpon. 



1. DEKMATOCAKPON Esehw. 



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. lachneum. 



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



1. Dermatocarpon Moulinsii (Mont.) Zahlbr. in Engler & Prantl, Nat. 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 Aeh. Lich. Suec. Prodr. 140. 1798. 

 Endocarpon rufescens Ach. Lieh. 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. 1860. 



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 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 Scytoncma), New Providence: Cuba; Peru; Japan. 



Family 5. PARATHELIACEAE. 



Spores brown, plurilocular. 1. Parathelium. 



Spores colorless, muriform-multilocular. 2. Campylothclium. 



1. PAHATHELIUM Nyl. 



Spores 34-40x11-16 w . 1. P.indiitum. 



Spores 18-22 x 8-9 w . 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 Rico ; Colombia. 



2. Parathelium microcarpum Riddle, sp. nov. 



Thallus crustaceus uniformis effusus haud limitatus, cum eortice niaculam 

 nitidam ochraceo-fulvam constituens, continuus laevigatus. Gouidia chroole- 

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

 nigra ^emi-innata parte emersa nudata, ostiolis lateralibus collis breviusculis. 

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



