26 o 
XXIV. Thongs. Crypt. Algae. 
Brick Walls, March, P. Rare. 
Elstow. 
866. Horn^heam Liver-^wort. — L. carpineus. 
Crust ash-colored, tubercles whitish, wrink- 
led. — Dillenius. XVIII. ii. C. 
Trees, January, P. Common. 
Ohs : 
Crust very thin, 
867. Heath Liver-wort, — L. ericetorum. 
Crust the color of verdigris, tubercles nearly 
sitting, flat, flesh-colored. — Sowerby. 372. 
excellent. 
Heaths, December, P. Common, 
Ohs : 
At first sight like a slice of sage cheese, 
S68. Mushroom Liver-zvort. — L. byssoides. 
Crust ashy-green, tubercles brown, mostly 
on fruitstalks. — Sowerby. 373. 
Heaths, December^ P. Rare. 
Ampthill, 
Ohs : 
Tubercles on long stems like a small species of Agaric. 
869* Large Heath Liver-zvort . — L. Baeomyces. 
Crust whitish, tubercles on stems, flesh-co- 
lored. — 'Sowerby. 374. excellent. 
Heaths 
