CRYPTOGAMIA. ALG M. Lichen. 
3 
pigment, which, on being rubbed, turned into a bright yellow, and 
diffused a smell of violets, whence they have obtained the name of Violet 
Stones ; though indeed the stone itself has no smell at all, but only the 
moss with which it is dyed.” Starke. E. 
L. fla'vus. Yellow, powdery; growing upon wood. 
(E. Bot. 1350. E .)—Hoffm. 1. 4 —Dill. 1. 4 —FI. Ban. 899.2. 
Forming a very thin and wide-spreading coat on the substances on which 
it grows ; yellow or brimstone coloured ; on rocks thicker, and of a lemon 
colour. The microscope shows it to consist of roundish or oval globules, 
single or in clusters, somewhat hairy, falling into a very fine deep yellow 
powder. Its colour sometimes changes to tawny or greenish. Hoffman. 
It has been observed to continue on the same spot, and apparently in the 
same state for several years. 
(Yellow Lichen. Lepraria Jlava . E. Bot. Achar. Hook. E.) Byssus 
candelaris. Old pales, bark of trees, and old walls. A. Sept.—June. 
L. botryoi'des. Green, powdery. 
Hoffm. Enum. 1 . 2—( E. Bot. 2148. E.)— Dill. 1. 5 — FI. Dan. 899. 3. 
Consists of dark green globules crowded together, the size of tobacco seed, 
appearing somewhat gelatinous in the microscope. Dill. Covering the 
earth, or stones with an intense green colour, often with a cast of yellow, 
cracking when dry into irregular polygons. Globules, when magnified, 
semi-pellucid, sprinkled with a yellowish powder. When old, the whole 
crust changes to a rude gelatinous mass. Hoffman. 
(Common Green Lichen. Lepraria hotryoides. E. Bot. E.) Byssus 
botryoides. With. Ed. 2. Bark of trees, on walls, and on moist and 
shady ground. P. Jan.—Dec. 
B. (1.) Crust with Black Lines. 
L. rugo'sus. Fructifications unbranched black lines and dots, set 
thick together ; crust whitish. 
(E. Bot. 2282. E.)— Dill. 18. 2— Hoffm. Enum.2. 5. 
Crust very thin, white, with numerous black spots and lines. Dill. 
(Broad-wrinkled Lichen. Opegrapha epiphega. Common on the bark 
of trees; making broad black patches on the smooth and even bark of 
young beeches and oaks. E. Bot. E.) P. Jan.—Dec. 
L. scrip'tus. Fructifications black branching lines resembling written 
characters; crust whitish. 
(E. Bot. 1813. E.)— Mich. 56, Lichenoides. 3— Hoffm. Enum. 3. 2. a. c. d — 
Dill. 18. 1. and 55. 9. being the ground on which a Bryum is depicted. 
Crust whitish, very thin, marked with various black lines like Arabic cha¬ 
racters, by which it is readily distinguished. Dill. On elms and oaks. 
P. Jan.—Dec. 
Var. 2. Fructifications large, black, in high relief, of no regular figure, 
bearing a rude resemblance to Hebrew or Chinese characters. 
Hoffm. Enum. 3* 2 .f. (not e. as misprinted .) 
(Black-letter Lichen. Opegrapha scripta. Achar. Method. E. Bot. 
L. scriptus. Achar. Prod. Linn. Huds. &c.— Graphis scripta. Achar. 
Hook. E.) 
Mr. Griffith conceives that the above are nothing more than a Sphseria in a 
young state, before its proper fructifications are formed. 
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