I have a nomenclatural question:

When Nannfeldt (1932) created the genus Dibeloniella, he combined there Cenangium raineri de Not. (1841) as type species. Beloniella vossii (Rehm) Rehm is its synonym, so he listed it too, picking the older of the two epithets. No matter, whether the latter is based on Mollisia v. or Pyrenopeziza v., both were published in 1884. But IF lists also a combination Dibeloniella vossii (Rehm) Nannf., being made on the same page as D. raineri. Nannfeldt didn't explicitly made it, but as the type species of Dibeloniella he wrote "Beloniella vossii Rehm (= Cenangium raineri de Not.)". Is it possible, that he unintentionally combined M./P. vossii into Dibeloniella, too?

The only other (online) source I've found the combination D. vossii (Rehm) Nannf. is a manuscript version of Notes for genera: Ascomycota (Wijayawardene et al, 2017), in the published version Dibeloniella is only mentioned as a synonym of Mollisia, without its type species. Other treatments of the genus list D. raineri as the type (Hütter 1958; Müller et Défago 1967; Nauta et Spooner 2000).

I'm not actually working with the genus, just trying to understand the Code better.
Viktorie 

Hans-Otto Baral, 19-12-2022 11:11

Re : Dibeloniella - a nomencl. question

Hi Viktorie

C. raineri is indeed much older than Mollisia vossii Rehm 1884, explaining Nannfeldt's choice for the combination. I assume the two names have different types, but I do not understand why Nannfeldt chose M. vossii (as Beloniella) as type.

In Nannfeldt 1932 p. 107 I also see no combination Dibeloniella vossii as suggested by IF, this must be an error. A combination must represent an association of genus and species epithet, it is not sufficient to say that an epithet belongs in a given genus.

More interesting than these nomenclatural things would be to understand what D. raineri is.

Zotto

Martin Bemmann, 19-12-2022 11:37

Re : Dibeloniella - a nomencl. question

Hi,

here is the protologue of Cenangium raineri:

 https://www.biodiversitylibrary.org/item/32584#page/143/mode/1up

and the plate:

https://www.biodiversitylibrary.org/item/32584#page/153/mode/1up

regards

Martin

Hans-Otto Baral, 19-12-2022 12:05

Re : Dibeloniella - a nomencl. question

Interessant, danke Martin.

Schaut mir irgendwie nach Spilopodia aus und wäre dann eine ältere Gattung!