Using the Rare Plant Inventory Advanced Search
Using the RPI's advanced search allows you to unlock even more capabilities! List/Rank, Location, Biology, and more.
Vegetation Program
Growing our understanding of California’s plant communities
We don’t save individual plant species in isolation. Plants belong to communities, playing foundational roles in our ecosystems. Our understanding of those relationships are critical to both conservation and science. The CNPS Vegetation Program has established a vegetation classification system that has become the standard for interpreting statewide vegetation patterns and for initiating local and regional ecological assessments. Today, the program continues to expand this knowledge to inform conservation and land-use planning amidst today’s critical decisions. Read on to learn more.
Manual of California Vegetation (MCV)
The MCV is California’s definitive system for describing vegetation statewide. It uses a principal unit called an “Alliance” (or series), which is a floristically defined vegetation type identified by its dominant and/or characteristic species. Learn more about the MCV or access the current online edition here.
Areas of Service
Rare Plant Communities
CNPS is developing tools and training to identify and protect rare vegetation types as key units of biodiversity.
Veg Mapping & Monitoring
From grasslands to conifer forests, we’re working to quantifiably capture California’s plant communities and their changes over time.
Reports
Classification and mapping reports for rare plant communities and places, created in partnership with state, federal, and local partners.
Field Updates
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How to Search the Rare Plant Inventory
Over one-third of California’s flora is considered rare. Learn expert tips to search the RPI to prepare a list of rare plant species for a project. -
The Many Uses of the CNPS Rare Plant Inventory
It sounds mysterious and magical, like an ancient tome you would check out of the library. Where does it come from?