Umbilicaria.} LICHENES. 



219 



granulated on both sides glaucous-grey above, blackish-brown 

 beneath, tubercles scattered somewhat bordered much convo- 

 luted Ach. Metk p. 110. E. Bot. t. 2*86.-Zichen murinus, 



Ach. Prodr. p. 143,— L. griseus, Ach. in Act. Holm. — Umbili- 

 caria depressa, (3. A. Schcer. Lich. Helv. Spicil p S*> 



" Communicated by Mr. D. Turner to Sir J. E. Smith, but the spe- 

 cimens are exotic \\ e know not its precise place of growth in Britain, 

 though we have it from Sweden, Switzerland and France.— A very distinct 

 species, 1-2 inches broad, black, without fibres beneath, finely granulated 

 with pale cartilaginous warts like shagreen; browner towards" the edee 

 Upper-nde grey, very minutely cracked, without veins or plaits: white 

 and mealy in the middle. Tubercles rare, minute, seldom perfectly 

 p aited. It would be very desirable to ascertain positively whether this 

 plant has a right to a place in the British Flora. Our specimens from 

 * ranee are quite different from any British species. 



7. G. pellita, Ach. (fleecy Gyrophora); thallus simple or 

 many-leaved coriaceous sinuato-lobate dark greyish coppery- 

 green (brown when dry) very smooth, beneath at the maririn 

 coal-black with dense pulvinate fibres, apothecia sessile at 

 length somewhat globose most copiouslv and intricately plait- 

 ed— Ach. Syn. p. 67.— Lichen peMtus, Ach. Prodr.— E. Bot 

 t 931.— L veUeus Huds.—L. polyrkizus, Ligtof.—UmbUicaria 

 depressa, /3. F. Schccr. Lich. Helv. Spicil. p. 83.— Dill. Muse. 

 t. 30. j. 130. 



Northern mountains, upon rocks.— The apothecia of this are verv dif- 

 ferent from those of any other British species, and resemble the finest 

 and most beautiful filigree-work. 



25. Umbilicaria. Fee, Hoffm. (part of,) Umbilicaria. 



Thallus foliaceous, coriaceo-membranaceous, pustuled, fixed 

 by the centre, peltate. Apothecia orbicular, somewhal concave 

 adnate, covered by a black membrane, the disk at length tuber- 

 £ed, with ^border of its own substance.— Name,— Umbiln 

 from the umbtlicated frond or thallus. 



I. U. pustuldta, Schrad. {blistered Umbilicaria); thallus 

 spreading simple covered with wart-like blisters greenish-grey 

 Jpalegrey and pruinose when dry) blacker at the margin which 

 is variously lobed and bearing copious tufts of black hairs which 

 sometimes extend to the disk, beneath grey-brown deeply pit- 

 ted [naked, apothecia few plan,- bordered at length often tuber- 

 elejL— Schrad. Spirit. P . 102. Hoffm, PL Lich. t. 28. /' 1 2 

 U 29 f. 4^Lecideapustulata, Ach. Meth.p. 85—Ztdfoi pus- 



■ rf/T^!'- ' L ^^GynphcrapustutoatAch. Syn. 



l>. <»(). Hook. II. s,nt. r. II. /. .} L '. ' 



*«*•» rarioua parta of England, Wales, Scotland and South of 



,l,Iall,l : ( - 1/ ;- ^«fw>«)j but not eery general.— it often growa to a I 

 s ! /l '- ' f°"ected ...> finest ipecimena on dn Granite rocka in a 



tut in SUT T" 1 ,)ani, : ,lv : ' v -»"- Mr. Meosiea '- pithered the 

 fruitin ^otlandCperhaMmefiratofanj lt u ex . 



fremelj rare) and Mr. Bomrand myself in the Isle of 8kve 



