List of commonly used abbreviations or terms

Number-code for Genera

001.1001 (etc.)           Sequential code generated by database indicating linear relationship

                                    First number stands for family, second for genus

                                    Important! The numbers are not stable and can change with any phylogenetic revision of sequence. They should not be used for any links.

Deep Links

(for Wikipedia and other external users)

Stable deep links can be generated using the following format (Lycopodium clavatum as example)




[I]              introduced (established neophyte or adventive)

[c]             commercially cultivated (and sometimes escaped)

                 If in a country or region only those categories apply, the 3-Letter-Code is written in “small” non-capital letters

Coded Distribution

Numbers                   Regions according to Brummitt (2001) [“World Geographical Scheme for Recording Plant Distributions”]

                                  See Country Stats page for explanation of numbers and sequence

3-Letter-Codes          Countries or Regions of Level 1 according to Brummitt (2001)

                                 We follow usually Brummitt (2001) but in some cases are deviating

                                 See Country Stats page for explanation of codes

Supraspecific categories and their rank

[Class                          for database reasons not displayed]

[Superorder                for database reasons not displayed]

Order                          used only in “Linear sequence”

[Suborder                    for database reasons not displayed]


Subfamily                   used only in “Linear sequence”

Tribus                         used only in “Linear sequence”

Subtribus                    used only in “Linear sequence”


Subgenus, Series etc.  not used for sorting, listed (if available) in “remarks”-field


Infraspecific ranks

subsp.                         Subspecies

nothosubsp.                Nothosubspecies (cross between two subspecies of the same species)

                                   For database structure reasons "nothosubsp". cannot be used as rank,
                                   but they are indicated in brackets behind the literature citation as “[nothosubsp.]”

var.                             Variant

f.                                 Forma

Conservation categories

IUCN                         Species listed in International Union for Conservation of Nature’s Red List

            EX                  Extinct

            EW                 Extinct in the Wild (surviving only in culture)

            CR                  Critically Endangered

            EN                  Endangered

            VU                  Vulnerable

            NT                  Near Threatened

            LC                  Least Concern

Author abbreviations

Author abbreviations are standardized according to IPNI.

In a few cases diacritical signs (in Author names from Eastern European and Turkish origin) are not compatible with my database system and TXT data transfer within programs. Those symbols are ž, Ž, ğ, Ř, ř, Ş, Š, š, ǎ, Ć, ć, Č, č, ĕ, ě, Ł, ł and ı.They have been replaced with their similar latin basic symbols. I apologize for any inconvenience caused.

Literature abbreviations

Literature citations, especially older ones coming from early versions of Kew Index and Index Filicum, are NOT standardized. This would overwhelm my capacities. Newer imports from IPNI are standardized.

Year of description is in most cases moved to the end of the citation, but not 100%.

Sequence of Synonyms

Synonyms are usually (but not always) sorted alphabetically and not following the year of description. Again, this has database reasons.

For a later version it would be desirable to group synonyms based on the same type together (using the "" sign instead of "="). Again, this was not conceivable in the 1990s and incorporation today is currently outside of resources.