152 COLLEMA. 



crowded^ and complicate; apothecia smallish, and crowded. 



Schcer. Enum. p. 255. 



Calcareous, and other rocks. Greenland (/. VaJil) Th. Fries 

 I. c. 1861. 6, Islands of Behring's Straits, Wright. 



14. C. cristatellum, Tuckerm. ; thallus scattered, microphyl- 

 line, coriaceous; olivaceous-black; the very minute lobes as- 

 cendant, with crenate-cut, rugose-granulate edges, reduced now 

 at the centre to erect, club-shaped lobules ; apothecia small to 

 middling- sized, flattish ; the disk dark-chestnut, the thin mar- 

 gin granulate. Spores ovoid-ellipsoid, from 4-locular becoming 

 sub-muriform, decolorate, ^^ mic. Lick. Calif, p. 29. 



On the earth. Gravelly soil, New Mexico (Fendler), Tucker- 

 man I. c. 1866. And a very similar plant is found in California, 



Bolander. The New Mexican lichen is possibly only a very 



reduced state of the C. cristatum, Schser. (Licli. Helv. n. 417), 

 which is reckoned by Nylander (Syn.} a condition of the last 

 species. 



15. C. multipartitum (Sm.) Tayl.; thallus of middling size, 

 coriaceous, laciniate ; brownish- olivaceous and blackening ; the 

 radiant, narrow, repeatedly forked divisions convex, with as- 

 cendant, rather entire, undulate-plicate edges ; apothecia small 

 to middling, flattish ; the disk dark-red and blackening, the 

 margin very entire. Spores linear-oblong, mostly curved, from 

 4-locular becoming 6-8-locular with entire spore-cells, decol- 

 orate, " mic. Hook. Brit. Fl. 2, p. 210. Nyl. Syn. I, p. 116. 



Calcareous rocks near Stewart's Lake, British Columbia, 

 Macoun. The specimens are fragmentary, but perhaps to be 

 referred to a reduced, smooth form of this species. In the com- 

 plicate edges of the thallus the lichen is better indeed compara- 

 ble with SynecJiobl. Laureri Koerb. (Anz. Langob. n. 5) than with 

 Smith's Irish lichen (Herb. Tayl.), but agrees with the latter in 

 its scarcely concatenate collogonidia, and its spores. 



16. C.furvum ( Ach. ) Nyl. ; thallus middling- sized, sub-mem- 

 branaceous, lobate, complicate; olivaceous-green and blacken- 

 ing; soon besprinkled with concolorous granules ; lobes rounded- 

 difform, erectish, with wavy, entire, or sub-crenate edges, 

 becoming now oblong and sinuate -laciniat e ; apothecia scat- 

 tered, smallish, flattish ; the disk dark-brown, the margin very 

 entire. Spores ellipsoid, 4-locular becoming sub-muriform, de- 



