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ing. The apothecia are innate or depressed in the upper side of the thallus, 

 they have no apparent margin and the disk is a dark reddish brown. 



The two species described in this article are the common ones and differ 

 very much in the color of the thallus and in the position of the apothecia. 



SoLORiNA CROCEA (L.) Ach. Thallus small to medium, very brittle when 

 dry, has round appressed lobes with crenate margins. It is a dull green, 

 becoming cinnamon colored when pressed. The under surface is some- 

 what villous, with thick, dark brown reticulated veins, the margin is crisp, 

 the color is a rich saffron, the rolling of the lobes giving the upper side the 

 same hue. Apothecia are large, appressed, adnate to the thallus, disk dark 

 reddish brown with no well defined margin. 



5. crocea is an alpine species, is found on the earth, or on mossy rocks, 

 and is not rare in the Rocky Mountains. Very handsome specimens have 

 been collected in Scotland on Ben Lomond and other mountain peaks. 



Fig. 2. S. sac cat a. 

 SoLORiNA SACCATA (L.) Ach. This unusual looking lichen is a bright 

 green becoming when dry a gray green : the thallus is thinner than that of 

 5, crocea, the lobes are somewhat imbricate, the margin wavy. The under 

 side is white with fibrils the same color. The apothecia are at first 

 appressed, then depressed, giving the appearance of brown holes or pits in 

 the thallus. 



This species is found in temperate regions growing on earth or in the 

 crevices of damp and shaded calcareous rocks. 



In Chilson Lake, Essex Co., New York, there is an island an acre in 

 extent, on the south side of which the rocks are granitic, on the north side 

 calcareous, and here S. saccata is found in abundance but at no other place 

 on the lake. 



