Flora element classification of the species is based on the FLÓRA database (Horváth et al. 1995). 
The flora element categorization in the FLÓRA database was developed to be both simple and to provide a scientific basis for thorough analyses. 

The flora element classification is as follows:

ADVENTIVE GROUP
ADV****** Adventive elements

COSMOPOLITAN GROUP
COS****** Cosmopolitan elements

EUROPEANGROUP
CIR****** Circumpolar elements
EUA***** Eurasian elements
EUR**** European elements
CEU*** Central-European elements

CONTINENTAL GROUP
CON**** Continental elements
PON*** Pontic elements
PoM*** Pontic-Submediterranean elements
PoP*** Pontic-Pannonic elements
TUR*** Turanian elements

MEDITERRANEAN GROUP
MED**** Mediterranean elements
SME**** Submediterranean elements
SMO*** Eastern-submediterranean elements
PaB*** Pannon-Balkan elements
BAL*** Balkan elements
ILL** Illyrian, Western-Balkan elements

ATLANTIC GROUP
AsM**** (Sub)atlantic-submediterranean elements
SAT**** Subatlantic elements

NORDIC and MONTANE GROUP
BOR**** Boreal, Nordic elements
ALP**** Alpine elements
CEA*** Central-European-Alpine elements
ALB*** Alpine-Balkan elements
CAR** Carpathian endemisms
DAC** Eastern-Carpathean, Dacic elements

ENDEMIC GROUP
PAN** Pannonian endemisms
END* Local (super) endemisms

The number of asterisks (*) indicates the geographical size of the categories.
 

Data source and citation:

Horváth, F., Dobolyi, K., Morschhauser, T., Lőkös, L., Karas, L., & Szerdahelyi, T. (1995). Flóra adatbázis 1.2. Taxon-lista és attribútum állomány. Vácrátót: MTA ÖBKI. [Flora database 1.2, List of taxa and attributes.]

Adatbázisközlő cikk (majd)