In article , Xavier
Vanbecelaere writes
I have a question concerning the Latin names

Where does the "L." stands for

example: Ceratonia Siliqua L.
Olea Sylvestris L.


Are there other Letters like these used?

As has already been said L. is an abbreviation for Linnaeus. (L. f. is
an abbrevation for his son.)

There is a strong tendency to abbreviate the names of authors of
scientific names of organisms (e.g. Hook. for Hooker, Lam. for Lamarck,
Cav. for Cavanilles), but they're rarely shortened as far as one letter
- even Linnaeus is sometimes abbreviated as Linn. rather than L.

I've seen T. for Tournefort [1], and H., B. & K. for Humbert, Bonpland
and Kunth. DC. is the abbreviation for De Candolle. Another book is
using F. & R., but I don't know who this refers to.

[1] Tournefort predates Linnaeus, and as year zero for priority of names
is Linnaeus's Species Plantarum of 1753, Tournefort doesn't count for
authorship; however some older literature recognised pre-Linnaean
authors, in some cases as far back as Pliny.
--
Stewart Robert Hinsley