Peltidea.] LICHEN ES. 215 



1. P. venosa, Ach. (black-veined Peltidea); thallus ascendant 

 small green and smooth above (grey when dry) irregularly 

 lobed, beneath white downy with dark prominent reticulated 

 veins, apothecia marginal plane dark red-brown orbicular. — 

 Ach. Syn. p. 237 .—Lichen renosus, Linn. — E. Bot. t. 887. — 

 Dill. Muse. t. 28. f. 109. 



On the earth among rocks, in alpine districts. 



2. P. seuidta, Ach. (target-fruited Peltidea); thallus ash- 

 coloured white and veiny beneath the lobes oblong rounded 

 sinuated and cut powdery, fertile ones very short, apothecia 

 (small) orbicular ascending dark-brown the border nearly en- 

 tire. — Ach. Syn. p. 237. — Lichen scutatus, Dicks. Cr. Fasc. 3. 

 t. 18. (excl. the sy?wny?n.) E. Bot. t. 1834. 



On old trees, among mosses, Inverary. Ardtur, Copt. Carmickael. 

 Abundant in woods near ltae hills, Sir IV. Jardine and Dr. Greville. 

 Westmoreland, Sir J. E. Smith. 



3. P. horizonfdlis, Ach. {brown horizontal Peltidea); thallus 

 glaucous brownish-green lobed crenate and shining, beneath 

 pale with numerous brown branching reticulated veins, fertile 

 lobes short, apothecia plane horizontal transversely oblong red- 

 brown with a nearly entire border. — Ach. Syn. p. 238. — Lichen 

 horizontalis, Linn. — E. Bot. t. 888. 



Moist shady rocks and about the roots of trees, in mountainous 

 countries. 



4. P. aphthosa, Ach. ( Thrush Peltidea); thallus Light-green 



smooth sprinkled with brown warts and having broad rounded 

 lobes the fertile ones contracted their sides retiYxed, apothecia 

 large ascending red-Drown with a jagged border. — Ach. Syn. 

 p. 238. — Lichen aphthosus % Linn. — E. Hot. t. 1 1 19. — Dill. Muse. 

 t.28.f. 106. 



Moist shady alpine rocks, among moss and generally near water. — 

 This is the finest British juries of the Genus: it derives its name from 

 a circumstance related by Linnaeus, that the Swedish peasants boil it in 

 milk as a cure lor the aphtha', or thrush, in children. 



5. P. canina, Ach. (canine Peltidea); thallus thick glaucous- 

 grey greenish when moist somewhat furrowed with rounded 



lobefl fertile ones with the vide- relieved, beneath white with 

 brownish branching veins and fibres, apothecia vertical re volute 



reddish-brown with a subcrenulated border. — Ach. Syn. p. 289. 



— Lichen caninui, Linn /■/. lut.t. l'llMi. Woodo. Med* /!>>/. 



Suppl. i. -213.— Dill. Muse. t. 27. f. L02. 



Upon the ground, among moss, on roofs of houses, trees, 8cc rerj 

 com 1 1 urn.- -Former!} employed, at the sugg< Btion <>i Dr. Mead, as a cure 



for the bite Of a mad-dog, whence the Specific name. 



6. P. ip&ria, Ach. Meth. (impetfecth/'Veim I Peltidea); thallus 

 ash-coloured and eyen shore whitish smooth with indistinct 

 pale reins beneath, apothecia ascending roundish dark reddish- 



