California Native Plant Society

The Rare Plants Inventory - RPI - is a database of information regarding all rare and endangered plants in California. To assist planners, consultants and resource managers, the SFF funded an effort to include all existing threat data for each species in the RPI. The app to use the RPI is free and available to everyone, allowing all users to have access to common information regarding current threats to native plant species and populations. CNPS Inventory of Rare Plants | California Native Plant Society.