setchellii, known by common name as the Santa Clara Valley dudleya or Santa Clara Valley liveforever, is a member of the Dudleya genus of succulent perennials, members of the family Crassulaceae.

[2][3][4] A perennial rosette-forming succulent, this species is characterized by pale yellow petals, a simple (not branching multiple times) inflorescence, and a restriction to serpentine soil.

Originally placed a subspecies of Cotyledon laxa / Echeveria laxa,[8][9] an antiquated synonym for Dudleya caespitosa, botanists Nathaniel Lord Britton and Joseph Nelson Rose placed it as a separate species within Dudleya in 1903.

[10] In a 1957 issue of Madroño, botanist Reid Moran revised setchellii as a subspecies of Dudleya cymosa.

[12] Almost half a century later, Moran and other botanists returned to setchellii, and again revised it as a subspecies of Dudleya abramsii.

[12] Recent phylogenetic analysis may in fact place setchellii back into a subspecies of D. cymosa, as it is most closely related to D. c. subsp.

setchellii is found only in the Coyote Valley area of southern Santa Clara County, California, mostly on rocky outcrops within serpentine grasslands on Tulare Hill and the Santa Teresa Hills west of Coyote Creek in south San Jose and south of Metcalf Canyon east of Coyote Creek.