EDIT

We should also consider removing the parentheses from the accession number since this seems to be useless in most sitations.

I removed the parentheses but these now causes inconsistent display:

What do you think Henning?

Reviewing the screen shot:
First representation: Lectotype (reference) gathering(Code accession number)
Second representation: Registration Name Type: gathering. Lectotype, Code accession number

I cannot see a problematic inconsitency because both are different representations with overlapping information. Both make sense, both are justified.

I would leave this as is (because it's fine).

OK, parentheses are removed again.

Quote

"OK, parentheses are removed again."

The brackets are reinstated not removed but should be removed, see Screen shot:

removing the parentheses would affect all portals. Before doing this we should keep the effect on other portals in mind and discuss this step with other users.

For example the Cichorieae synonym portal page for Youngia atripappa looks now like:

this would be changed to

The visual separation of the accession numbers from the preceding text is no less good without the parentheses.

In the Youngia example the version with brackets is clearer.

ok, so i am closing this issue now

To me there seems to be a misunderstanding. My understanding of #8365#note-8 is that is fine to have brackets for typification but NOT to have them for registration formatting. Only removing them for registration would not brake with any other portals.
So to me this seems to be the wanted behavior. But I don't know if this is possible or if both formattings work with the same formatter.

Just in case there is still any open question here.