1772 CRYPTOGAMIA. ALGAE. 1938. Lichen. 



* ovifhaloies. Cartilagino-membranous, rigid, fomewhat ftellate, 

 rufty black-brown, fhining, dotted with black, black fibrous 

 underneath: fegments imbricate, many-cleft, linear, flat, rather 

 truncate at their tips: Shields dark bay, with an inflected flightly 

 crenate margin Eng. BoL /, 604. 

 2. panniformis . Cartilagino-membranous, effufe, imbricate, grey, with 

 black down underneath: fegments fhorr, fcale-like, cut.jagged,rather erecl. 

 *Jamtilis. Membranous, glaucous-grey, fomewhat ftellate, roughifh, 

 reticulatcly pitted, black fibrous beneath: fegments finuate-lobed, 

 imbricate, flat, fomewhat truncate: fhields bay, with a thin 

 .inflc&ed pale crenulate margin. Eng Bot. 60^. 

 *confperfus. Membranous, ftellate, glaucous-green, glabrous, dotted 

 with black, black-brown and fibrous beneath: fegments fome- 

 what imbricate, flat, finuate iobed, cut rounded-crenate: ihieldi, 

 central, bay, with an inflected nearly entire margin. 

 DHL tab. 24 /- 75. 

 2. itenophyllus- Membranous, effufe, pale greenifh-brovvn with blacl: fibres 

 underneath: fegments pinnatifid, long, linear, flcxuous, in bricately com* 

 plicate: fhields fcattered, chefnut, with an inflected margin. 

 centrifugus. Membranous, from a central point, greenifh-white A 

 tinged, beneath white with grey-brown fibres: fegments convex, 

 many-ciei v 'inear and obtufe in the circumference: fhields rather 

 I. . ?inal, fcattered, rufous-brown, with an inflected nearly 

 entire border, 

 ambiguus. Membranous, ftellate, pale greenifh, black-brown and 

 fibrous b^n':?.th: fegments apprelfed, flat, linear, narrow, deeply 

 many • clef t . fhields fcattered towards the centre, minute, red- 

 brown, with a railed nearly entire pale margin. 

 Hoffm. t. 40. f* 2—4. 

 *lanug:nojus. Membranous, r tteilate, greyifh-white, mealy, blueifh- 

 black and downy beneath : fegments fomewhat imbricate, flat, 

 iinuate-lobe.d, rounded with a mealy margin : fhields fmall, 

 raifed, pale rufous, wiih an inflected mealy white border. 

 Dicks, t. 6./. 1. 

 * aleurites. Membranous, ftellate, rugged- mealy, greyifh-white* 

 brown and nearly naked at the circumference beneath: fegments 

 rounded at ton, cutcrenate :„fhieids raifed, reddifh-brown, with 

 an inflected crenulate mealy white margin. Eng. Bot. t 8s8. 

 *stelbris< Membranous, ftellate, becoming plaited- wrinkled, naked, 

 grey, whitifh with grey fibres beneath: fegments fublinear, 

 cpnvex, many-cleft : fhields flat, biueifh-b!ack, at length 

 concave and deep black, with an inflected grey margin. 

 Hoffm. t. 13./. 2. 

 aipolius. Membranous, ftellate, glaucous-grey, nearly naked, black- 

 fibrous beneath : fegments flattifh, undulate, broader in the 

 circumference, cut-lobed, crenate: fhields flat, blueifh, with % 

 tumid inflected white entire margin. Hoffm, t. iz.f. 2. c. 



