Cladonia firma
popcorn lichen
Family: Cladoniaceae
Conservation status: CNPS 2B.1
Cladonia firma (popcorn lichen) is a California plant in the Cladoniaceae family.
I apologize, but there is insufficient botanical data provided to generate a meaningful description following the detailed rules. The plant data section is mostly blank, with no specific details about habitat, distribution, flowering time, or Jepson description. Without source data, I cannot create an accurate plant description. To generate a description, I would need: - Specific bioregional distribution information - Elevation range details - Habitat specifics - Flowering time - Jepson botanical description - Any distinctive physical characteristics Would you like to provide the missing information so I can craft a description?
Identification and appearance
Key characters: Differentiators are not available at this time.
Conservation status
CNPS 2B.1
How to tell it apart
Differentiators are not available at this time.
Frequently asked questions
What plant family does Cladonia firma belong to?
Cladonia firma is in the Cladoniaceae family, genus Cladonia.
Is Cladonia firma rare or endangered?
Cladonia firma carries California Rare Plant Rank 2B.1, state rank S1.
More California species
This species has no close relatives in our California data — here are other species to explore.
Sources: CDFW CNDDB
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.