XXIV. Thongs. Crypt, Algae, 
86i. Hoary Liver-wort. — L. canescens. 
Crust whitish, tubercles very black, croudcd. 
Dillenius. XVIIL 17. A, 
Trees, Walls, December, P. Common. 
^62. Bluish Liver-wort . — L. caeruleo-nigricans. 
Crust bluish, tubercles black, — Hoffman. 
Enum. Lich, XXXII, 3. 
Hills, January, P. Rare. 
Barton — Kemp st on. 
Obs : 
Younger tubercles greenishf almost sittings older ones on siems^ 
at length turning back. 
863. IVall Liver-wort. — L. fusco-ater. 
Crust brown, tubercles black. Jacquin. Col- 
lect. II. 14. 3. 
‘Walls, January, P. Common. 
864. Oak Liver-zvort. — L. querncus. 
Crust yellowish brown, tubercles black, near- 
ly sunk in the crust. — Dickson, 1‘asc. 
Crypt. I. 2. 3, 
Posts and Gates, January, P. Common. 
865. Sulphureous Liver-zvort. — L. sulphureus. 
Crust brimstone-colored, cracked, uneven, 
tubercles brown-black, irregular, very sn)ail. 
Hoffman. Enum. Lich. VL 3, 
L 1 2 
Brick 
