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 13:17, 30 July 2020 by imported>Volume Importer
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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 +