ry rtu

115
Graphis Scripta 2: L15-117 , 1989.
NOTES ON THE LICHEN FLORA OF DENMARK. III.
HEI,LBOM, S I,TCHENS FROM BORNHOIJM AND OTHER MATERIAL IN GB.
Vagn Alstrup, Institut for Okologisk botanik, 0. Farinagsgade 2D,
DK-l-353 Kdbenhavn K.
53 species reported by Hellbom from Bornholm are confirmed , 24
species are redetermined and excluded from the flora. 38 species
are still dubious for the island while 13 lichens and 1 1ichenicolous
fungus are new to Bornholm. Psorotichia scJraereri
should be deleted from and Lecidea nigrocruenta added to the
Danish Lichen flora outside Bornholm.
Prior to NLF's excursion to Bornholrn I prepared a prelininary list
for this island (Alstrup 1987 ) . At that time I had studied duplicates
of some of Hellbom's collections of in C but not his main
collections, which are kept in G6teborg (GB) . In the prelininary
list I therefore included rather many species reported by Hellborn
(1890) on his authority. I have now studied the collections in GB,
and my findings are reported here.
Confirned speeies
Collections of the following species reported by Hellbom were studied
and bis identifications confirmed ( the loealities of the seen
material are given when more collections were cited by tlellbon) :
Acatospora heppii, Aerocordia conoidea, Atthonia didyna, A. punctiformis,
e. Japponina, Arthopyrenia grisea, AspieiTia radiosa,
A. recedens, Bacidia arceutina, B. bagLiettoana (Hammeren), B.
phacodes, BueTTia schaereri, B. s teJLulata, B. venusta, CatiLl.aria
erysiboides, C. globulosa, CTauzadea monticola, DimereTLa pineti ,
Gyalecta truncigena, KiTiasia ( Catinaria ) athalLina , I'ecanora ctenuJ.ata
, Lecidoma demissum, Leptogiun paJmatum, Leptoraphis epidernidis,
Micarea Jignaria, M. nitschkeana, MyeobiTinbia hypnorum
(Biatora atrofusca) , M. sabuletorun, MycopytenuTa coryTi, Nephroma
arcticun, Opegrrapha personii , O. saxj coJ,a, Pertus aria chiodectonoides
, P. coccodes , P. hynenea, Pol-ychidiun rnus cicoTa, Psoroma hypnorum,
Rhizocarpon geminatum, R. Tavatum, Schaereria cinereorufa,
.5. f uscocinerea (Hammeren 1884 ) , Sphinctrina turbinata, staurothele
cTopima, StereocauTon incrustatum, TheJidiun decipiens, T. ninutuium,
Thrombiun epigaeum, TomasseJJja geiatinosa, Verrucaria
dufourei, v. hiascens (Hammershus) , v. hochstetteri , V. maeuLiformis
( Irirnensgade ) and V. margacea .
Species re-identified
The collections of the following species were re-studied and the
species should be excluded from the lichen flora of Bornholm or
remain dubious in cases where all cited coLlecti.ons were not seen.
l{y identif ications are given in brackets.
Arthonia TapidicoJ.a ( Svaneke: Theiidiun sp. ;
not seen) .
Arthopyrenia cerasi (A. Tapponina ) .
specimen from Olsker