i 7 74 CRYPTOGAMIA. ALGAE. 1938. Lichen. 



corrugatus, Coriaceo membranous, ftellate, rugged-plaited, glan- 

 cous-greenifh, black-brown fibrous beneath: fegments rounded- 

 lobed, plaited-flexuous, rugged : fhields concave, very large, 

 flexuous, red-brown, with a thin inflected crenulate margin. 

 Dill i. 24./. 79. 



*tiliaceus. Somewhat membranous, ftellate, whitifh-glaucous, a 

 little frofted, blackifh- brown with black fibres beneath: feg- 

 ments imbricate, rounded-lobed, finuate-crenate, plaited, flexuous; 

 fhields brown, with an inflected nearly entire margin. 

 Eng. Bot* t, 700. 



scortcus. Coriaceo-membranou*, ftellate, greyinVwhite, mining, 

 fmooth, finely dotted with black, black briftly beneath: fegments 

 fomewhat imbricate, rounded- lobed, finuate-crenate, flexu,qus. 



* caperalus. Coriaceo membranous, ftellate, plaited-rugged, pale 



grceniih yellow, black-briftly beneath: fegments finuate-labed, 

 rounded, (lightly crcnate : fhields rather central, concave, 

 chefnuf, with an inflected crenulate mealy margin. E. Bot. 654. 



e. Fraud leaf)', fomewhat coriaceous^ with vague lax expanded lobes- 

 villous underneath. Lobaria. 



*pirlaius. Somewhat coriaceous, expanded, glaucous-green, fmooth, 

 black-brown and a little villous beneath ; lobes rounded, a Uttlq 

 curled: (hields cup-fhaped dull red, with an entire margin. 

 E B&t. /. 341. 



2. olvnrius. Somewhat coriaceous, expanded, flightly lobed, fmootn, 

 grcenifh -white, black beneath, naked both fides, with the whole margii 

 flexuoiv curled incurved thick and mealy. Dill. t. 20. f. 39. B. 



*perforatus. Somewhat membranous, expanded, glaucous, black. 

 villous beneath, cut-lobed and fringed at the margin : fhieh 

 funnel-form, at length, perforated, rufous, with an entire margii 

 Eng Bot. t. 341 j? 



obvolutus. Coriaceo-membranous, expanded, grey-brown, grey* 

 downy both fides; lobes rounded, emarginate: fhields cup-fhaped, 

 fomewhat marginal, rufous, with an inflected nearly entire mar* 

 gin. Smith. 



* herbaceus. Somewhat membranous, expanded, fmooth, bright. 



green, pale with brown down beneath; lobes cut-crenate: ihieh 

 flattifh, red-fulvous, with an nfleded nearly entire margin. 

 Eng. Bot. t. 294 



*glomuliferus. Somewhat coriaceous, expanded, fmooth, glaucous* 

 grey, white with brownifh down beneath ; lobes finuate, 

 rounded, crenate; fhields red-fulvous, with a crenulate margin^ 

 intermixed with branched tufted excrefcences Eng. Bot. t. 293. 



*Jcrobiculatus. Somewhat coriaceous, expanded* fmooth, pitted, 

 glaucous-green, dark ferruginous and vilous beneath with nakec" 

 white fpots; lobes rounded, cut and irregubr: fhields tavf ny ? 

 with an entire margin. Eng. Bot. t. 497. 



