Ord. VIII. Tribe I. LICHENS IDIOTHAL AMI. 953 
15395 Crust membranaceous white with a greyish or whitish-grey powdery substance scattered over it in small 
clusters, Apothecia minute appressed plane black 
15396 Crust leprous granul. powdery green.-yell. Apothecia sess. margin, finally convex dark : of same col. inside 
15397 Crust granular somewhat gelatinous greenisli-brown, Apothecia appressed margined finally hemispherical 
clustered dark : of the same color inside 
15398 Crust globose warted powdery cinereous yellowish, Apothecia convex scabrous 
** Apothecia black, naked : when moistened becoming-red or brown. 
15399 Crust thin whitish, Apothecia plano-convex immersed in the stone margined dark : disk pruinose ; 
when moistened crimson, white inside 
15400 Crust cracked into areola; brownish ash-color edged with dark lines, Apothecia sessile flat becoming 
convex edged irregular black 
*** Apothecia black with a grey bloom. 
15401 Crust tartareous contiguous even at length somewhat tessellated and whitish, Apothecia sessile and 
elevated plane black with a grey bloom and a black smooth border 
/3 Crust of a regular figure contiguous whitish csesious, Apothecia immersed : disk depressed hoUowish 
15402 Crust spreading very thin smooth glaucous : fructification subsessile plane black with a grey bloom ; the 
border raised and swelling 
15403 Crust tartareous contiguous very white, Apothecia sessile thick black powdery margined becoming convex 
with an ash-colored layer under the disk 
15404 Crust tartareous defined tessellated white areola swelling, Apothecia sessile hemispherical with a grey 
bloom black within with a thin persistent margin 
15405 Crust somewhat tartareous granular areolated uneven very white, Apothecia minute somew. immersed 
caesious becoming subglobose not margined dark cinereous inside 
15406 Crust thick greyish-white cracked rugose at length mealy very white within, Apothecia numerous scat- 
tered minute : at first prominent and pale-brown ; then concave and black 
**** Apothecia black-brown, brownish, or deadened by some other color. 
15407 Crust somewhat effuse granular cinereous greenish, Apothecia appressed flat dark-brown : inside dirty- 
white with a thin flexuose edge paler than the disk 
15408 Crust lep. granul. pale yellow.-brown, Apoth. somew. immers. becom. conv. not margin, brown and black 
15409 Crust thin granulat. somew. farin. green or green. -brown : fructific. conv. rug. irregul. conflu. black.-brown 
15410 Crust spread, leproso-farin. soft uneven glauc. green, Apothecia scatter, sess. brown with marg. ent. paler 
15411 Crust tartareous cracked and broken uneven smoothish pale sulphur-color, Apothecia adnate plane 
scarcely margined brown and scarcely paler in the margin, at length irregular and convex 
15412 Crust cracked areolated uneven somewhat powdery sulphureous, Apothecia minute sessile convex not 
margined whole-colored becoming hemispherical 
15413 Crust granulated greyish-white. Granules becoming pulverulent, Apothecia nearly plane red flesh- 
colored livid or brown with the elevated margin paler, at length flexuose 
15414 Crust firmer granulat. and subpapill. Apothecia at length hemispheric, rug. brown. -black and black conflu. 
15415 Crust thin tartareous contiguous greyish-white, Apothecia immersed plane margined, at length convex : 
the margin persistent glabrous reddish-brown ; of the same color within 
15416 Crust thin whit, cover, with somew. globul. pale gran, at length grey. Apoth. sess. becom. conv. yel.-brown 
15417 Crust thin membranous hoary finally granular powdery, Apothecia sessile concave thick tumid brown 
flesh-colored with an edge of the same color 
jS Crust very thin naked whitish, Apothecia flatfish scarcely margined waxy purple brown and black 
15418 Crust spreading very thin membranaceous white or greyish somew. shining subgranulose, Apothecia 
plane yellow-brown, at length red-brown with the margin paler elevated, at length flexuose 
15419 Crust thin somewhat cracked uneven greyish-white : fructification plane, at length angular and irregular 
yellowish or reddish-brown ; the border narrow persistent 
15420 Crust spreading somewhat scaly uneven roughish darkish-brown, Apothecia minute plane reddish yellow 
with the margin paler, at length somewhat convex and brownish 
***** Apothecia dark-red, or whitish flesh-color. 
15421 Crust tessellated rugose darkish-grey, Apothecia plane rusty orange : the margin sometimes crenulate, 
at length convex with the margin obsolete blackish-red 
15422 Crust leprose uneven somewhat granulated greenish-white, Apothecia nearly sessile plane flesh-colored, 
at length waved roughish in the disk : margin scarcely any 
15423 Crust thin grey .-white, Apothecia somew. glob, at length urceol. white : disk flesh-color. ; marg. tum. ent. 
15424 Crust thin smoothish minutely granulated greyish- white, Apothecia slightly convex entire whitish rose- 
color paler at the margin 
****** Apothecia pale, yellowish, waxen or orange-colored. 
1,'5425 Crust thin white powdery, Apothecia plano-convex smooth edged pale-yellow 
15426 Crust cartilaginous cracked rugoso-plicate granulated white or greenish, Apothecia nearly sessile plane 
at length slightly convex waved unequal clustered pale yellowish 
15427 Crust subtartareous tessellated pale, Apothecia nearly plane with the margin lobed waved clustered, at 
length subglobose destitute of margin yello%vish flesh-color 
