CRYPTOGAMIA. ALGiE. Lichen. 
29 
L. ompiialo'des. Saucers dull purple ; leaves hoary, smooth, blunt, 
many-cleft, sprinkled with rising dots. 
(E. Bot. 604. E24. 80— Vaill. 20. 10— Hoffm. Erium. 12. 2— 
Mich. 49. 2. 
Colour dull purple, shining, smooth, with numerous black fibres under¬ 
neath. Leaves interwoven, about an inch long. Saucers dull purple, and 
smooth within, grey on the outside and hairy, cracked at the edge. Dill. 
(Cork, Corker, or Arcell. Ginn du eerig, or Kenkerig, Welch. Gaelic, 
Croial . Parmelia omphalodes. Achar. Hook. E.) On rocks. 
Jan.—-Dec.* 
L. parieti'nus. Saucers tawny yellow : leaves full yellow, curled. 
E.Boi. 194 —FI. Dan. 1005— Dill. 24. 76— Col. Ecphr. i. 331. 2— Hoffm. 
Eninn. 18. 1. 
Agrees with L. candelarius and juniperinus in colour, but the former con¬ 
sists merely of branny scales, the latter of loose leaves. The parietinus 
is an intermediate species. Linn. Crust indented, wrinkled, margin leafy. 
Leaves cut, and ending in blunt segments. Saucers on the foliage as well 
as on the central crust, small, yellow, with a border of the same or a 
paler colour. Varies in colour from greenish to deep golden yellow. 
Grey underneath. Dill. In age frequently losing its central leaves and 
targets, like the centrifugus. Mr. Woodward. 
(Common Yellow Wall Lichen. Parmelia parietina. Achar. Hook. E.) 
Trunks of trees, walls, tiles, wood, and stones. P. Jan.—Dec. 
Var. 2. Leaves green. 
E. Bot. 194. 
Moisture and shade render it more lax, leafy, and of a greenish or pale 
olive hue; so it commonly appears on trees or bushes ; in which state it 
is the L. juniperinus of British writers. E. Bot. Mr. Dickson also 
assures me that the real L. juniperinus has never been found in this 
island. 
L. margina'lis. Saucers brown green, flattish, on the edge of the 
leaf: leaves blackish green, many-cleft, tooth-scolloped. 
(E. Bot. 1924. E.)— Dill. 19. 2 5—Jacq. Coll. iii. 12. 1. 
Leaves lying on the ground, brown green, black when dry, their ends fre¬ 
quently cut and curled. Saucers numerous, small, concave, bordered, 
brown green when fresh, reddish when dry. Dill. Borders raised. 
(Marginal Gelatinous Lichen. Dr. Smith inclines to think L. 
melcenus of Acharius scarcely a variety of this. Collema melcenum , 
/3 marginale. Achar. Hook. E.) Rocks and stones in the northern parts 
of Britain, and in Carnarvonshire. Near Lucton, Herefordshire. Dill. 
Walls about Settle and Kirkby Lonsdale. Dr. J. E. Smith. Fir planta¬ 
tion near Cefn House, Denbighshire. Mr. Griffith. A. Oct.—June. 
L. oliva'ceus. Saucers brown green; scolloped; leaves lobed, shining, 
brown green. 
* It dyes wool of a brown reddish colour, or a dull but durable crimson or purple, 
paler but more lasting than that of Orchal. It is prepared by the country people in 
Ireland by steeping it in stale lye, adding a little salt to it, and making it up into 
balls with lime. Wool dyed with it, and then dipped in the blue vat becomes of a 
beautiful purple. With rotten oak it makes a good dark brown frize. Wool dyed with 
red wood, or sanders, and afterwards in Corcar, becomes of a dark reddish brown. 
Rutty. It has been used as a styptic. 
