Aeonium haworthii
Hist. Nat. Îles Canaries 3(2,1): 193. 1841,.
Shrubs closely dome-shaped, 7 dm, with many adventitious woody prop roots. Stems branched, 3–10 mm thick, woody; bark rough-reticulate and fissured. Leaves: rosettes lax, concave, 15–25-leaved, to 1 dm diam.; blade gray-green, often red-edged, obovate, 3–6 cm, 2–5 mm thick, firm, marginal cilia curved forward, broad-based, surfaces glabrous. Cymes lax, flat-topped, 0.5–1.5 dm, glabrous. Flowers bell-shaped, 1 cm diam.; calyx glabrous; petals 7–9, erect, cream. 2n = 72.
Phenology: Flowering late spring.
Habitat: North-facing cliffs in canyons and above sea
Elevation: 0-300 m
Distribution
Calif., Atlantic Islands (Canary Islands, Tenerife).
Discussion
Aeonium haworthii, grown in Californian gardens, is well established locally on north-facing cliffs, both in Aliso Canyon, Orange County, and above the sea at La Jolla, San Diego County.