Marcescent Dudleya is endemic to the Santa Monica Mountains in Southern California.
Dudleya cymosa ssp. marcescens is a state and federally listed and protected endangered plant: California State DFW status = listed Rare Species; Federal EPA status = listed Threatened Species.
It is illegal to collect Marcescent Dudleya, removing whole plants or taking cuttings is prohibited due to its listed rarity and threatened species status.