| Codes of California Native Plant Society Inventory (2001) |
| List Code |
|
| 1A |
presumed extinct in California |
| 1B |
rare, threatened, or endangered in California and elsewhere |
| 2 |
rare, threatened, or endangered in California, but more common elsewhere |
| 3 |
plants that lack the necessary information to assign them to other lists |
| 4 |
plants of limited distribution |
|
|
| R-E-D code |
|
| R (Rarity) |
|
| 1 |
rare but in sufficient numbers that the potential for extinction is low |
| 2 |
distribution in a limited number of occurrences |
| 3 |
distribution in highly restricted occurrences or present in small numbers |
| E (Endangerment) |
|
| 1 |
not endangered |
| 2 |
endangered in portion of range |
| 3 |
endangered throughout range |
| D (Distribution) |
|
| 1 |
more or less widespread outside California |
| 2 |
rare outside California |
| 3 |
endemic to California |
|
|
| State/Federal Listings of National Diversity Database (2000) |
| State listing |
|
| CE |
California state-listed, Endangered |
| CT |
California state-listed, Threatened |
| CR |
California state-listed, Rare |
| CC |
Candidate for California state listing |
| Federal listing |
|
| FE |
Federally-listed, Endangered |
| FT |
Federally-listed, Threatened |
| FPE |
Federally-Proposed, Endangered |
| FSC |
Federally-listed, Species of Concern |
