Ord. VIII. Tribe 111. LICHENS HOMOTHALAM I. 
975 
ttt+tt Thallus foliaceous : lobes rounded, membranous, thin, naked, cinereous, glaucous, somewhat transparent. 
Apothecia slightly stalked. Leptogium. 
15688 Thallus foliaceous membranaceous thin subdiaphanous lead-color obsoletely rugose and dotted : lobes 
rounded somewhat cut, Apothecia scattered subpedicellate plane reddish-brown : their margin pale 
15689 Thallus nearly erect foliac. membr. subdiaphan. subrugose with obscure reticulations glauc. : lobes small 
subimbr. cut and laciniat. and somew. fringed, Apoth. scattered rather concave red : their margins pale 
ttttttt Thallus very finely laciniated and hranchletted. 
15690 Thallus substellate : the segments very narrow linear appressed very much branched obtuse, Apothecia 
central nearly plane of the same color as the crust : their margin thin entire 
15691 Thallus subimbricated : segm. minute linear multifid unequal granular acute much clustered, Apothecia 
scattered fleshy rufous margined 
15692 Thallus subceespitose : segm. linear flat irregularly subdivided rugose obtuse j margins repand obsoleteiy 
crenated, Apothecia scattered of the same color 
15693 Thallus pulvinate brown. Branches rounded nearly erect flexuose uneven subfastigiate rather obtuse, 
Apothecia nearly terminal plane brown margined 
15694 Thallus dull-green : segm. aggregate branched granular cylindrical obtuse, Apothecia scattered concave 
brown : externally spongy and pale with an erect thin margin 
AT HAL AMI. 
15695 Crust thick pulvin. bright sulphur-color composed of a dust-like substance collect, into somew. hairy glob. 
15696 Crust spreading equal thin somewhat cracked bright-yellow composed of subglobose granules 
15697 Crust not discernible. Fructification of an ochrc-y-yellow collected into thin scattered patches 
15698 Crustac. granulated continuous somewhat gelatin. : greyish dull-green when dry ; bright-green when wet 
I'SE UJD 0-LICHENES. 
+ Disk of apothecia very narrow, crack-like, someivhat covered in by the conniving tumid margins. Hysterina. 
15699 Crust somew. cracked unequal very white, Apothecia clustered minute oval-oblong turgid : disk closed 
15700 Crust tartareous determined reddish-white, Clefts immersed convex without any elevated border re- 
peatedly branched curved parallel and equidistant 
J5701 Crust tartareous smoothish cohering uneven whitish, Apothecia innate oblong: disk resembling a cleft, 
at length rugose waved plaited dissimilar rather confluent with the disk irregular somewhat dehiscent 
j8 Crust tartareous or leprose uneven |)ulverulent, Apothecia roundish dissimilar waved plaited tortuose 
and variously expanded in the disk 
15702 Crust tartareous powdery very white, Apothecia longish straight swelling opaque collected in a stellate 
manner : disk like a crack 
15703 Crust very thin brownish-black, Apothecia minute much crow^ded roundish elliptical, at length rugose 
irregular : disk very narrow 
15704 Crust somewhat membranous very finely cracked rugose roughish cinereous-brown, Apothecia minute 
innate clustered convex elliptical oblong straight with a crack-like disk 
/3 Crust membranous smoothish pale-olive or green and rufous-brown, Apothecia variable roundish 
oblong straight and curved 
15705 Crust between cartilaginous and membranaceous somewhat scaly smoothish greyish-white, Apothecia 
sessile long or roundish waved somewhat shining with the disk very narrow 
15706 Crust very thin of a regular figure polished cinereous, Apotliecia innate minute convex rugulose opaque 
various : smaller dot-like ; longer very slender flexuose somewhat branched 
(8 Crust very thin shin, pale-olive, Apothecia subellipt, simp, somew. parallel becoming stellate and angular 
15707 Crust membranous polished somewhat bordered whitish, Apothecia sessile various : the smaller globose 
or oblong ; larger very long narrow roundish flexuose 
/3 Crust regular membranous whitish, Apothecia sessile close together somewhat shining longish flexuose 
simple and branched : disk somewhat channelled 
ft Disk of apothecia concave, channelled, or flat, appearing between the separated margins. Alyxoria. 
15708 Crust cartilagin. lep. white, Apothecia scatter, sess. round, and oval deform. : disk flat becoming convex 
/3 Crust cartilaginous membranous dirty-white ash-color, Apothecia variable sessile oblong and tapering at 
each end opaque : disk flat 
ft f Thallus cartilaginous, membranous, contiguous, polished. Liccphlea. 
15709 Crust very thin smooth much cracked very black, Apothecia very minute subglobose immersed : the 
extremity prominent umbilicated ; nucleus blackish 
and Miscellaneous Particulars. 
2361 Verrucaria. Thus called, from verruca, a wart, on account of the verrucose nature of the shields. 
Schrader says, this genus differs from the similar Eudocarpon in having the shields always closed, while the 
latter explodes its contents by a small but distinct orifice. 
