146 HERRE 



Endocarpiscum guepini Nyl. Flora, 47: 487. 1864. 

 Endocarpiscum guepini Tuck. Syn. N. Am. Lich. I: 113. 1882. 

 Endocarpiscum guepini Herre, Proc. Wash. Acad. Sci. 7 : 374. 1906. 



Thallus small to very small, thick and leathery, one-leaved, becom- 

 ing polyphyllous, umbilicate, appressed, more or less circular and 

 peltate, or crenate-lobulate, smooth or flexuous; scattered, or densely 

 crowded and imbricate; the sinuous, crenate, usually upturned mar- 

 gin generally blue sorediate; the brownish olive color paling some- 

 times to gray but more often blackening; beneath naked, smooth, 

 minutely wrinkled, flesh-color, brown, or blackening. 



Apothecia deeply imbedded in tiny pits, invisible to the naked eye; 

 rarely becoming superficial, lecanorine, black; spores very numerous, 

 spheroid to oblong, exceedingly minute. 



Abundant on sandstone and granite in the foothills at moderate 

 elevations and on cliffs above the sea. A lichen of Europe and 

 North America. 



The thallus is very frequently infested with a fungus, Endococcus 

 pseudocarpus Nyl., described by him as a lichen; it may be recog- 

 nized as follows : fruiting body immersed in the thallus of Heppia, 

 globose, blackish-brown, with bi-locular, ellipsoid, pale brown 



3-5- 6.25 



or dusky spores, measuring /*. 



9-75- 15-75 



2. HEPPIA BOLANDERI (Tuck.) Wainio. 



Pannaria bolanderi Tuck . Gen . Lich . 5 1 . 1872. 

 Endocarpiscum bolanderi Tuck. Syn. N. Am. Lich. I: 114. 1882. 

 Heppia bolanderi Wainio, fitude sur la Classif . Nat. et la Morph. 

 des Lichens du Bresil, 215. 1890. 



Thallus small to minute, from scattered soon densely crowded 

 and imbricate, one-leaved, thick, rigid, from simple soon irregularly 

 lobulate, more or less wavy, crisped, the margin often curved up- 

 ward and microscopically granulose or isidiose, attached by a very 

 few thick rhizoids, either centrally, or else at one edge, and then 

 ascendant or erect; color dull olive and blackening. 



