Article from Bean's Trees and Shrubs Hardy in the British Isles
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'Prunus ilicifolia' from the website Trees and Shrubs Online (treesandshrubsonline.
An evergreen shrub of compact habit; branchlets glabrous. Leaves ovate, 1 to 2 in. long, 3⁄4 to 11⁄4 in wide; rounded or slightly heart-shaped at the base, sharply toothed, the hollows between the teeth wide and rounded, dark glossy green, glabrous on both surfaces. Flowers in racemes 11⁄2 to 3 in. long, produced in summer; each flower 1⁄3 in. across, white, on a stalk 1⁄6 in. long. Fruits roundish, but slightly pointed at the end, 1⁄2 in. in diameter, changing to red, then black-purple.
Native of California, and too tender to be of much value in any but the mildest parts of the British Isles as a shrub for the open ground. But on a sunny wall it should survive all but the hardest winters once it is established and flower well, at least in warm summers. Closely related to this species is:
Synonyms
Padus caroliniana Mill
Synonyms
Prunus integrifolia Sarg., not Walp.
Prunus lyonii (Eastw.) Sarg.
This grows taller than P. ilicifolia and has almost entire leaves, racemes up to 5 in. long and dark fruits. Native of several islands off the coast of California, including Sta Catalina.