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138
Graphis Scripta l:138 -143, 1989.
The comeet nares of the liehenized tlnphalina species in Seandinavia
Per M, Jorgensen
Botanical Institute, University of Bergen,
AIldgaten 41, N-5007 BERGEN, Norway
Svengunnar Ryman
The Herbarium, Uppsala University
P.0. Box 5tt1 , 5-751 21 UPPSALA, Sweden
Abstraet: The nomenclature of the four lichenized 0mphalina species is
reviewed.ThecorrectnameSare30'g\r-iqa(gritz.ffiky&Stang1'0.
hudsoniana(Jenn.)Bige1ow,0.um6ffi(L.:Fr')Qu61.and0.veIutii?
TQ..riTr6l. Types "re oesi. , A. umbffir.
fLavus, Omphalia velutina, Cantharellus dovrefjeldiensis and Verrucaria
laetevirens.
Introduction
The nomenclalure of the liehenized species of the genus Omphalina has
remained unusually unstabJe. This refleets taxonomic difficulties, combined
with a eomplex nomenclatural situation, often with eonfliet,ing
interpretations of the texts. Far too often the only original material left
are illustrations. As t.hese, according to the present Code (Rrt. 7.4), can be
automatically used as lectotypes, they can take preference over any neotype.
This is very unsatisfactory, particularly as illustrations eannot be studied
microscopically or chemically, and thus invite diseussion and divided
opinions if they are not extremely detailed. Accordingly this destabilizing
element in the nomenclature should be removed by a change in the Code on this
practiee. Howeverr wE have in spite of our dislike of this practice followed
the present Code when typifying some of the names treated below. To avoid
future difficulties as to whether a lecto- or neotype for an epit,het has been
selected, we suggest such typifications should formally be recorded
somewhere, e.g. in the Index of Fungi. }|e do not give a full synonomy, and
only treat the most important or critical names; for a fuller treatment see
Redhead & Kuyper (tgg7).
The nEilEs
In the most reeent ehecklist of liehen names in Seandinavia, Santesson (1984)
records four species 0. hudsoniana, 0. luteovitellina, 0. psgudoandrosacea
and o. umbellifera. Imo i
and 0. ericetorulm for 0. umbellifera. In thEir
Ettempts foi a-new taxon-my and revised-nomenClature, ReOneaA & Kuyper (1988)
finally settled for the following names ( in the same sequence as Santesson
1984)t Phytoconis viridis, P. luteovitellina-, P. velutina and P. erieetorum.
We are not convinced that Phytoconis can bre separated from Omphalina in the
way proposed by them (.:org6-GiliF), and regard their typification of the
generic name as incorrect (Jargensen & Ryman 1989). Furthermorer BS a
consequence of Art. 59 , we ( op. cit. ) propose to conserve the teleomorphic
name Omphalina over the older generic names given to the sterile, liehenized
thallus.
In the following we review the specific epithets according to this view. The
epithets are listed alphabetieally. A nomenclatural survey is g-i-ven in
conclusion.