California rare plant rank 4 is the watch list, plants that have limited distribution in california and are being monitored to see if they become more rare or endangered.
Large plant in hawaii southern california plant leaf detail. In the california desert, there is strong interest in renewable energy development and important conservation concerns. Cnps rare plant data are widely accepted as the standard for information on the rarity and endangerment status of the california flora. Statewide the program currently recognizes more than 1600 plant taxa (species, subspecies and varieties) as rare or endangered in california (cnps lists 1b and 2).
