A rare and critically imperiled species from the Santa Monica Mountains in California, it is characterized by glaucous, gray-purple leaves, bright yellow flowers, and ascending bracts.

A leaf succulent, it is found growing on west to northwest-facing open, rocky volcanic slopes.

[5] It is primarily threatened by development, but also trampling, trails, invasive plants, and illegal dumping.

The erect peduncle is 6–17 cm (2.4–6.7 in) tall by 2–3 mm (0.079–0.118 in) wide, and tinged with red.

Lining the peduncle are lanceolate bracts, which are 1–2.5 cm (0.39–0.98 in) long by 7–10 mm (0.28–0.39 in) and with acute to acuminate tips.

agourensis is endemic to California in the United States, occurring in the Santa Monica Mountains of the Transverse Ranges.

[5] This species is primarily found on open, rocky volcanic slopes, typically facing west to northwest.