Prunus ilicifolia

(Nuttall ex Hooker & Arnott) D. Dietrich

Syn. Pl. 3: 43. 1842.

Common names: Hollyleaf cherry islay
Illustrated
Basionym: Cerasus ilicifolia Nuttall ex Hooker & Arnott Bot. Beechey Voy., 340. 1839
Treatment appears in FNA Volume 9. Treatment on page 362. Mentioned on page 355.
Revision as of 00:31, 28 May 2020 by imported>Volume Importer

Shrubs or trees, sometimes suckering, 10–150 dm, not thorny. Twigs with terminal end buds, glabrous. Leaves persistent; petiole 3–25 mm, glabrous, eglandular; blade oblong-ovate to ovate-lanceolate or ovate to suborbiculate, 1.6–12 × 1.2–5(–7) cm, base usually broadly rounded to subcordate, sometimes obtuse, margins spinose-dentate to spinose-serrulate or entire, sometimes undulate, teeth sharp, callus-tipped, sometimes glandular at leaf base, apex acute to acuminate, surfaces glabrous, abaxial eglandular, if glands present, restricted to margins. Inflorescences 15–40-flowered, racemes; central axes 30–80 mm, leafless at bases. Pedicels 1–5 mm, glabrous. Flowers blooming before leaf emergence; hypanthium cupulate, 2–3 mm, glabrous externally; sepals erect to spreading, triangular, 0.7–1.2 mm, margins entire, surfaces usually glabrous, rarely with scattered hairs; petals white to yellowish, elliptic, obovate, or suborbiculate, 1–3 mm; ovaries glabrous. Drupes dark red to purple or blue-black, obovoid or ellipsoid to globose, 12–25 mm, glabrous; mesocarps leathery; stones subglobose to ellipsoid, ± flattened.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaf blades ovate to suborbiculate, margins spinose-dentate to spinose-serrulate; petioles 3–10 mm. Prunus ilicifolia var. ilicifolia
1 Leaf blades oblong-ovate to ovate-lanceolate, margins usually entire, sometimes remotely spinose-serrulate; petioles 8–25 mm. Prunus ilicifolia var. occidentalis