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.

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 ovatelanceolate 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
... more about "Prunus ilicifolia"
acute;acuminate +
Joseph R. Rohrer +
(Nuttall ex Hooker & Arnott) D. Dietrich +
dark gray +, gray-brown +, reddish-brown +  and reddish +
compound +  and simple +
opposite +  and alternate +
obtuse +, usually broadly rounded +  and subcordate +
Cerasus ilicifolia +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (12 cm120 mm <br />0.12 m <br />) +
oblong-ovate +  and ovatelanceolate or ovate +
0.5 cm5 mm <br />0.005 m <br /> (18 cm180 mm <br />0.18 m <br />) +
membranous +  and leathery +
1.2 cm12 mm <br />0.012 m <br /> (?) +  and 5 cm50 mm <br />0.05 m <br /> (?) +
free +  and distinct +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Hollyleaf cherry +  and islay +
solitary +, fascicles +, 2-flowered +  and umbellate +
Calif. +  and nw Mexico +
not +  and aggregated +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
dark red +  and purple or blue-black +
ellipsoid +  and globose +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
flattened +
hairy +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (4 cm40 mm <br />0.04 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
not +  and aggregated +
persistent +  and deciduous +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
crassinucellate +
persistent +
entire +, spinose-dentate +  and spinose-serrulate +
undulate +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and apical +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0 (?) +  and 4 (?) +
white +  and yellowish +
free +  and distinct +
suborbiculate;obovate;suborbiculate;obovate;elliptic +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
adnate +, free +, connate +  and distinct +
not arillate +
free +  and distinct +
erect +  and spreading +
triangular +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Illustrated +
free +  and distinct +
branched +  and simple +
1 +  and 20 +
linear;lanceolate +
flattened +, subglobose +  and ellipsoid +
deciduous +
distinct +
basal +, lateral +, subterminal +  and terminal +
not elongate +
Amygdalus +, Armeniaca +, Cerasus +, Lauro-cerasus +, Padus +  and Persica +
Prunus ilicifolia +
species +
callus-tipped +
inconspicuous +
tree +, suckering +  and shrub +
hairy +  and glabrous +