DERMATOCAEPACEAE. 531 



Family 4. DERMATOCARPACEAE. 



Spores one-celled. 1. Dermatocarpon. 



Spores muriform-multilocular. 2. Endocarpon. 



1. DERMATOCARPON Eschw. 



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



central point. 1. D. Moulinsii. 



Tliallus 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. T* : 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. 1860. 



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



On the ground, Abaco, at Old Ken'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.inchitum. 



Spores 18-22 X 8-9 /i. 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 cortice maculam 

 nitidam ochraceo-fulvam constituens, 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 collis breviusculis. 

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



