Extinct
Endangered systems
When determining the level of endangerment of a species, the IUCN Red List and NatureServe offer systematic methods for assessing the level of threat it faces. This page offers a simple comparison.
IUCN Red List Categories
EX
EW
Extinct in the wild
CR
Criticaly Endangered (possibly extinct)
EN
Endangered
VU
Vulnerable
NT
Near Threatened
LC
Least concern
DD
Data deficient
NatureServe Ranks
GX
Presumed Extinct
GXC
Presumed Extinct in the wild
GH
Possibly Extinct
GHC
Possibly Extinct in the wild
G1
Criticaly Imperiled
G2
Imperiled
G3
Vulnerable
G4
Apparently Secure
G5
Secure
GU
Unrankable
- See also:
- Naming Plants
- Taxonomy History
- House Plants History