Ei. Tuckerman on North American Lichens. 429 
Louisiana, Dr. Hale! Nearest to L. vernalis and L. sanguineoatra, but 
apparently quite distinct. 
» VERNICOMA, Sp. nova, thallo crustaceo effuso subtartareo e granulis 
minutis demum in crustam subrimosam conglomeratis viridi-stramineis ; 
apotheciis friunaoal sige margine tenui erecto evanescente diseum 
subplanum cingente, nigris 
a ab. , Granitic eke Essex, ae ia found by the late Mr, 
~ Oakes! Chester Co. , Pa, Dr. Mich 
i L, LePrpasrra, sp. nova, thallo ae effuso, areolis primitus discre- 
tis subsquamulosis crenatis glaucescentibus; apotheciis cupularibus e 
Strato corticali oriundis sessilibus disco opaco nudo plano margine persis- 
tente tenui aterrimo cincto, demum Stay ve Fi 
Hab. Granitic rocks, Brattleborough, Mr. F 
OPEGRAPHA MYRIOCARPA, = nova, thallo crostacen effuso e granulis 
minutis ditiararcts coacervatis fusco-cinerascentibus ; apotheciis minutis- 
simis rotundato-sublirelliformibus superficialibus atris, ‘disco plano-concavo 
Margine turgido elevato inflexo cincto. 
ab. On yellow birch and — sins in the White Mountains, and 
in Western Massachus etts. Our lest species, and remarkable for its 
well-developed crust. The a aothesn often pseudo-lecideine, but the 
ppp oe medusuliformibus fuscis cuinane G. favu 
Ach. et G. cicatricosa, Ach. 
Hab. Trunks, Santee canal, 8. C., Mr. Ravenel! North Carolina, Dr. 
Curtis / Alabama, Mr. Peters! "Mississi ippi, Dr. Veitch / pa 
Dr, Hale! Also Portugal, Dr. Capers ! Guyana, Monta Bra 
Zil, Meissner / Hong Kong, China, Mr. Wright / ta (hie, 
Bras,, p. 166— -7) appears to have confused the Acharian characters of the 
two species, Our lichen is G. favulosa, Ach., but G. cicatricosa, Ach. is 
certainly not to be distinguished from it, and if I understand our r Ameri- 
can lichen aright it has a development ~~ indicated by Achar 
RYPETHELIUM CAROLINIANUM, sp. nova, thallo crustaceo “ae leevi- 
gato e viridi fuscescente, verrucis fis ide ‘subhemiephsorici confluentibus 
difformibus subanastomosantibusque saturate fuscis nigrescentibus, stro- 
Mate flavo, peritheciis ovoideis tenuibus atris, ostiolis papillatis nigris 
Hab, Trunks, Sanfee canal, S. an api Ravenel! Hillsborough, N. i; 
Dr. Curtis! Louisiana, Dr. Pen Gia ange ae 
y if , 0 ¢ 
YRENASTRUM RAVENELI, Mee nova, tha isa crn 
ab, Trunks, Santee canal, 8. sen aay ™ 
imperfect Tra St to complete the description of this ihe species, 
Which 
‘ daunases, oo. soy thallo crustaceo effuso subcartilagineo cerato 
- levigato pallido-viridi-fuscescente; peritheciis emergenti-prominentibus 
