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hyaline, °—tmic. On sandstone. This species is closely re- 
lated to L. Swartsit Ach. 
L. varia (Ehrh.) Nyl. 
Var. symmicta Ach. 
Var. intricata Nyl. 
Var. saepincola Fr. 
Var. polytropa Ehrh. 
F. dlusoria Ach. 
Thallus evanescent, thin, apothecia dispersed, infrequent, large, 
disk plane, frequently convex, pale yellow, margin frequently oblit- 
erated. 
L. ventosa (L.) Ach. 
L. elatina Ach. 
Var. ochrophoea Tuck. 
Var. minor Tuck. (Haematomma Crsmonica Belt). 
L. pallescens (L.) Schr. 
Var. rvosella Tuck. 
L. tartarea (L.) Ach. 
F. leprosa Ny}. 
F. telephoroides Th. M. Fr. 
F. grandinosa Ach. 
F. macrocarpa Th. Fr. 
L. cenisia Ach. 
L. cinerea (L.) Somf. 
Var. laevata Fr. 
L. calcarea (.) Somf. 
_ L. cCINEREO-RUFESCENS (Ach.) Eck. 
Thallus dark ashy white, paler towards the border, verrucose 
to areolate, rimose; hypothallus black; apothecia sunken in the 
thallus, convex, disk dark brown, bordered by an entire thalline « 
margin ; spores hyaline, ellipsoid, simple, “mic. On rocks. 
L. CAESIO-CINEREA (Nyl.) Eck. 
Thallus ashy white to darker, thick, verrucose, areolate, broken; 
apothecia sunken in the areoles, concave, terminating in a white 
thalline border which finally becomes more or less prominent, 
spores hyaline, oblong, simple, <3 mic. On rocks. 
L. gibbosa Nyl. : 
L. fuscata (Schr.) Th. Fr. 
Var. rifescens Th. Fr. 
