Prunus fasciculata

(Torrey) A. Gray

Proc. Amer. Acad. Arts 10: 70. 1874.

Common names: Desert almond
Basionym: Emplectocladus fasciculatus Torrey Proc. Amer. Assoc. Advancem. Sci. 4: 192. 1851
Treatment appears in FNA Volume 9. Treatment on page 370. Mentioned on page 356, 359.

Shrubs, suckering, much branched, 10–20 (–30) dm, thorny. Twigs with axillary end buds, glabrous or canescent. Leaves deciduous; sessile; blade oblanceolate to linear, 0.5–2 × 0.1–0.2 (–0.4) cm, base long-attenuate, margins nearly entire or obscurely and remotely serrulate in distal 1/3, teeth blunt to sharp, sometimes glandular, apex rounded to acute, surfaces puberulent or glabrous or low-papillate (var. punctata). Inflorescences solitary flowers or 2-flowered fascicles. Pedicels 0–4 mm, glabrous. Flowers unisexual, plants dioecious, blooming at leaf emergence; hypanthium campanulate, 1.5–3 mm, glabrous externally; sepals erect-spreading, triangular, 0.7–1 mm, margins entire, surfaces glabrous; petals white to yellowish, elliptic, obovate, or suborbiculate, 1.4–2.5 (–4) mm; ovaries hairy. Drupes gray to redbrown, ovoid, ± compressed, 7–15 mm, densely puberulent; hypanthium tardily deciduous; mesocarps leathery to dry; stones ovoid, ± flattened.

Distribution

V9 605-distribution-map.jpg

Ariz., Calif., Nev., Utah, nw Mexico

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaf blades sparsely to densely puberulent, not papillate. Prunus fasciculata var. fasciculata
1 Leaf blades glabrous, sometimes papillate. Prunus fasciculata var. punctata
... more about "Prunus fasciculata"
Joseph R. Rohrer +
(Torrey) A. Gray +
dark gray +, gray-brown +, reddish-brown +  and reddish +
compound +  and simple +
opposite +  and alternate +
long-attenuate +
Emplectocladus fasciculatus +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
oblanceolate +  and linear +
0.5 cm5 mm <br />0.005 m <br /> (18 cm180 mm <br />0.18 m <br />) +
? (?) +  and ? (?) +
0.1cm +  and 0.2cm +
free +  and distinct +
Desert almond +
solitary +, fascicles +, 2-flowered +  and umbellate +
Ariz. +, Calif. +, Nev. +, Utah +  and nw Mexico +
not +  and aggregated +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
gray +  and redbrown +
compressed +  and ovoid +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
flattened +
hairy +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (4 cm40 mm <br />0.04 m <br />) +
at leaf emergence +  and blooming +
not +  and aggregated +
not +  and aggregated +
not +  and aggregated +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1-64(-90)[-100]-flowered +
crassinucellate +
deciduous +
entire +, serrulate +  and obscurely +
undulate +, toothed +, entire +, flat +  and lobed +
leathery +  and dry +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and apical +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0 (?) +  and 4 (?) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
free +  and distinct +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
adnate +, free +, connate +  and distinct +
Proc. Amer. Acad. Arts +
not arillate +
free +  and distinct +
erect-spreading +
triangular +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
free +  and distinct +
branched +  and simple +
1 +  and 20 +
flattened +  and ovoid +
deciduous +
distinct +
basal +, lateral +, subterminal +  and terminal +
not elongate +
glabrous +  and puberulent +
low-papillate +
Amygdalus +, Armeniaca +, Cerasus +, Lauro-cerasus +, Padus +  and Persica +
Prunus fasciculata +
species +
blunt +  and sharp +
inconspicuous +
canescent +  and glabrous +
thorny +  and branched +
plant +, shrub +  and suckering +
hairy +  and glabrous +