ACOTYLEDONS. LICHENS. Pcltldca. 59 



HAB. Trunks of old trees in shady woods, plentiful. On old wulnut 

 trees, at Barncluith, near Glasgow, Hopk. 



3. S. scrobiculata, thallus suborbicular glaucous greyish green 

 very broad somewhat pitted and having mealy warts, beneath 

 downy tawny with white naked spots, the segments rounded 

 and lobed irregular, apothecia scattered nearly plane reddish 

 brown their margin somewhat erenate. Ach. Syn. Lich. 

 p. 134. Lichen scrobiculatus, Lightf. p. 850. E. B. t. 497. 



HAB. Trunks of trees and on rocks, among moss, 1'entland Hills, 

 Mmtgh. 



4. S. Limbata, thallus orbicular glaucous brown roundly lobed 

 smooth grey and powdery at the margin, downy beneath with 

 white hollow spots, apothecia brown. Ach. Syn. Lic/i. p. 236. 

 Lichen limbatus, E. B. t. 1 104. 



HAB. Rocks in Scotland, Mr. Menzics, At the Hermitage, near Edin- 

 burgh, Sir J. E' Smith. On rocks and trees in shady places, by 

 the sides pf Loch Lomond, and near the Falls of the Clyde, Mr. 

 Turner and Hook. 



5. S. Jfttliginosa, thallus orbicular dark lurid grey rough with 

 brown granules, beneath greyish brown with white concave 

 spots, the segments roundly lobed nearly entire, apothecia 

 scattered dark brown their margin entire. Ach. Syn. Lich. 

 p. 236. Lichen fuliginosus, E. B. I. 1103. 



HAB. On moist rocks near the Falls of the Clyde, and near Inverary 



and Ballycheulish, Mr. Turner and Hook. 

 Has a very dingy appearance and unpleasant smell. 



6. S. sylvalicu, thallus wide rusty brown naked and pitted, brown 

 and downy beneath with small pale excavations, segments 

 lobed and obtusely cut unequal, apothecia marginal dark brown. 

 Ach. Si/n. Lich. p. 236. Lichen syluutims 9 Lizhtf. p. 848. 

 E. B. t. 2298. 



HAB. Shady woods about the roots of trees, frequent, Lightf. P'alls 

 of the Clyde, Ilopk. Woods, Inverary and Bailncheulish, Mr. 

 Turner and Hook. 



Smell very fetid. Apothecia rare ; never found in Britain, but by 

 Dr. Burgess, as mentioned in E. B. 



21. PELTIDEA. 



Universal receptacle foliaceous, coriaceous, spreading, subadnate, 

 lobed, with woolly veins beneath. Partial reccpt. formed 

 upon the upper side of a produced portion of the under surface 

 of the thallus, orbicular, subobliquely adnate, having a thin 

 elevated margin of the substance of the thallus. 



1. P. venoso, thallus greenish ash-colour, white beneath having 

 dark brown prominent branched veins, lobes rounded cut 

 somewhat entire, apothecia marginal plane rounded swelling 

 brown scarcely crenulate at the margin. Ach. Syn. Lich. 

 p. 237. Lichen vcnosus, Lig/itf. p. 844. E. B.t. 887. 



