Ord. VIII. Tribe II. LICHENS CCENOTHALAMI. 
963 
15543 Crust somewhat scaly greenish ash-colored becoming powdery. Lobes repand cut wavy with irregular 
margins, Disk of apothecia flat brownish black 
15544 Crust scaly yellow, Lobes very much crowded cut and laciniated imbricated their margins minutely 
granular, Apothecia nearly of the same color as the crust margin elevated entire 
/3 Crust formed of lobes with many crowded teeth and segments greyish yellow, Apothecia crowded waved : 
disk plane dilated of the same color as the crust at length fulvous and the margin crenulated 
15545 Crust scaly greenish-brown, Lobes minute somew. rounded with margin granular and crenulat. Apothecia 
submembran. : the disk concave at length dilated plane reddish brown the marg. elevated inflex. crenate 
15546 Crust imbricated greyish lobed and granulated ash-colored brown, Apothecia imbedded in the crust 
crowded irregular : disk rather convex red-brown the margin elevated crenulated persistent 
15547 Crust imbricated greyish, Lobes minute appressed blunt. Disk of the apothecia plane black margin 
elevated and crenate 
f All the divisions of the thallus equal at end. 
15548 Thallus cartilaginous rigid obicular livid and glaucous smooth bearing dark green scattered tufted excre- 
scences : tawny beneath and downy, the lobes waved and laciniated angular, Apothecia reddis"h brown 
rugose at the margin 
15549 Thallus orbicular pale yellowish green rugose at length granulated black and hispid beneath the lobes waved 
laciniated round, nearly entire, Apoth. scatter, brown their margin incurv. entire at length pulverulent 
15550 Thallus roundish subcoriaceous white smooth finely dotted with black : hispid beneath. Lobes longish 
sinuate-crenate cut, Apothecia rufous brown 
15551 Thallus orbicular greyish white smooth blackish brown and hairy beneath. Lobes rounded cut plane 
their margin waved entire, Apothecia brown their margin thin entire 
15552 Thallus orbicular glaucous green naked with black fibres on the under side. Lobes rounded cut flat some- 
what plaited at the edge, Apothecia rufous 
15553 Thallus orbicular membranaceous bright green above, beneath pale brown almost white and downy, Lobes 
waved and cut, the segments rounded subcrenate, Apothecia red, the margin iuHex. rugose and crenate 
15554 Thallus orbicular membranaceous finely rugose glaucous green, beneath blackish brown fibrous. Lobes 
cut rounded lax plaited entire 
15555 Thallus orbicular olive brown rugged with elevated points paler beneath and fibrous. Lobes radiating 
appressed plane dilated rounded and crenate, Apothecia dark-brown : the margin crenulated 
\555Q Thallus orbicular bright yellow : beneath paler and fibrillose; tlie lobes radiating appressed plane dilated 
round, crenate and crisped at the extremity, Apoth. of the same colour as the crust their margin entire 
15557 Thallus orbicular somewhat membranous contiguous plaited umber-olive colored cut crenate in the cir- 
cumference with flat somewhat truncate lobules 
15558 Thallus orbicular cinereous powdery : beneath white with black fibres. Central segments plaited eroded 
crisp powdery at edge, Apothecia concave blackish brown 
15559 Thallus orbicular white hoary granular powdery : beneath of the same color with obsolete blackish fibres. 
Segments of the circumference flat cut crenate, Apothecia appressed flat brownish black 
15560 Thallus orbicular membranous glaucous ash-colored : blackish brown beneath. Lobes sinuate-cut j the 
end ones rounded crenated, Apothecia brownish with an entire edge 
15561 Thallus orbicul. cinereous, Soredia grey margined, beneath brownish spongy and fibrous, Lobes concrete 
plaited : those of the circumference rounded cut crenate, Apothecia red with a tumid edge 
15562 Thallus orbicular yellowish white pulverulent greyish black and downy beneath, Lobes imbricated plane 
rounded slightly crenated, Apothecia reddish (" of the same color as crust") their margin pulverulent 
15563 Thallus orbicul. blueish-grey, beneath having a very thick spongy down, Lobes of circumference rounded 
and crenate, Apothec. scattered at length convex rusty-brown, their margin of same color and entire 
15564 ThalL orbic. brownish-grey, ben. having a blueish-grey spongy down. Lobes of circumf. obtusely notched 
elevated pale, Apothecia plane crowded central reddish-brown with tumid incurv. crenul. whit margins 
15565 Thallus orbicular dark purplish-brown shining dotted with black, beneath black and fibrillose : the seg- 
ments sinuato-multifid linear plane truncated crenate in the circumference, Apothecia dark-brown, the 
margin slightly crenulate 
15566 Thallus orbicul. greyish rough and pitted beneath black and fibrillose : the segments imbricated sinuated 
plane subretuse, Apothecia bright chesnut-brown, their margin subcrenulated 
15567 Thallus orbicular pitchy-brown smooth beneath black and scarcely fibrillose : the segm. sinuated multifid 
divergent plane or slightly grooved, margins elevat. lacerat. Apothec. dark-brown, margin granulated 
15568 Thallus stellated shining pitchy-black, beneath black and almost naked : the segments nearly linear mul- 
tifid and somewhat palmate convex, the margins and extremity recurved, Apothec. of the same color 
at length black with the margin crenated 
15569 Thallus orbic. tawny-brown paler beneath with blackish fibres : the segment multipartite nearly lin. convex, 
those of the circumfer. dilated nearly plane and crenate, Apothecia dark-brown, their margin crenated 
15570 Thallus stellat. pale-grey, beneath black uneq. naked : the segments often uniting convex and almost round. 
lin. multifid roughish dotted with black, Apothecia reddish-brown, their margin somewhat crenulated 
15571 Thallus stellat. pale-greenish bear, powdery warts, beneath black with spongy fibres : segments of circum- 
ference multifid very narrow convex and almost rounded, Apothecia reddish-brown, marg. nearly ent 
and Miscellaneous Particulars. 
2341 Parmelia. Named from ■xa.e^f^'/i, a sort of small shield, and uXiu, to enclose. On the thallus of these 
plants scattered powdery warts are commonly found. These Hedwig has determined to be anthers, apparently 
for no other reason than that they are powdery, and that he could fix the title to nothing better. 
