255 
L crustulata Ach. 
Thallus pale to brownish or often grey, adnate, thin, tartareous 
effuse, subrimulose to areolate; apothecia numerous, dispersed, 
sessile and simple, black with a distinct thin margin; hypothecium 
swollen, nearly brown; spores 8 in the thekes, simple, oblong, * 
mic. On rocks. 
L albocoerulescens (Wulf.) Schr. 
Var. flavocoerulescens Schr. 
Var. cinercoatra Ach. 
. variegata Fr. (L. pantherina Th. Fr.) 
. macrocarpa D.C. 
. lessellata F 1. (L. cyanea Th. Fr.) 
. lapicida (Ach.) Fr. 
. Leucothallina Ach. 
. empetrea Nyl. 
. tenebrosa F\. 
L. latypea Ach. 
L. DISTANS n. sp. 
Thallus thin, evanescent, but at length becoming minutely 
granulose and frequently continuous over a scurfy surface; apo- 
thecia mostly subsessile, elevated, large, flat, black with a depressed 
disk surrounded by a conspicuous granulose and crenate margin ; 
disk covered by a delicate evanescent thin bloom; hypothecium 
pale ; spores long, ellipsoid, simple, =, mic. On rocks. Labrador 
L. contigua var. metospora Ny}. 
Thallus thin, ashy white, areolate, rimulose; apothecia black, 
plane, with a proper margin, disk somewhat pruinose, spores sim- 
ple, hyaline, 2° mic. On rocks. 
L. Kochiana Hepp. 
Thallus pale ashy brown to fuscescent, rimose, areolate, 
broken, areoles sunken, plane, bordered by a black margin; apothe- 
cia innate, black, immarginate, flexuous or slightly angulose, diffi- 
form; disk plane, polished and smooth; spores 8 in the thekes, 
oblong, simple, =" mic. On rocks. 
L. dispansa Nyl. (L. expansa Ny.) 
Thallus furfuraceous, rimulose, thin, black; apothecia very 
numerous, minute, sessile, scattered, black, plane, the margin very 
smooth; hypothecium thin, fuscous; epithecium hyaline; spores 
about 8 in the thekes, simple, ellipsoid, “~~ mic. On rocks. 
L. auriculata Th. Fr. 
L. sylvicola (Flot.) Nyl. 
» id 
7-8 
HANNAN 
