Prunus serotina var. alabamensis

(C. Mohr) Little

Phytologia 4: 309. 1953.

Common names: Alabama black cherry
Endemic
Basionym: Prunus alabamensis C. Mohr Bull. Torrey Bot. Club 26: 118. 1899
Synonyms: Padus alabamensis (C. Mohr) Small P. australis (Beadle) Beadle P. cuthbertii (Small) Small Prunus serotina subsp. hirsuta (Elliott) McVaugh
Treatment appears in FNA Volume 9. Treatment on page 364. Mentioned on page 363.
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Twigs hairy, often densely so, hairs rusty brown. Leaves: petiole 2–12 mm, hairy to glabrate, glandular at petiole-blade junction, glands 2; blade elliptic to obovate, 3–12.5 × 2–6.5 cm, ± leathery, apex usually obtuse, rounded, or emarginate, sometimes abruptly acute or short-acuminate, abaxial surface sparsely hairy, especially along midribs and proximally. Inflorescences: rachises 50–160 mm.


Phenology: Flowering Apr–May; fruiting Jun–Aug.
Habitat: Rocky slopes and ridges, sandhills, mixed oak-pine-hickory forests
Elevation: 20–700 m

Discussion

Variety alabamensis has obovate leaf blades, much broader than var. serotina. The apices are usually obtuse, rounded, or rounded-emarginate, sometimes short-acute or short-acuminate. Branchlets and, sometimes, raceme axes are rusty-hairy; abaxial surfaces of leaf blades have scattered, rusty hairs. The trees are said to leaf out two weeks later than var. serotina and to hold their leaves much longer in the fall (C. L. Brown and L. K. Kirkman 1990).

Selected References

None.

Lower Taxa

None.
short-acuminate;acute;emarginate;rounded;emarginate;rounded;obtuse +
Joseph R. Rohrer +
(C. Mohr) Little +
dark gray +, gray-brown +, reddish-brown +  and reddish +
compound +  and simple +
opposite +  and alternate +
cuneate +  and rounded +
Prunus alabamensis +
3 cm30 mm <br />0.03 m <br /> (12.5 cm125 mm <br />0.125 m <br />) +
elliptic +  and obovate +
0.5 cm5 mm <br />0.005 m <br /> (18 cm180 mm <br />0.18 m <br />) +
2 cm20 mm <br />0.02 m <br /> (?) +  and 6.5 cm65 mm <br />0.065 m <br /> (?) +
free +  and distinct +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
3.5 cm35 mm <br />0.035 m <br /> (16 cm160 mm <br />0.16 m <br />) +
Alabama black cherry +
solitary +, fascicles +, 2-flowered +  and umbellate +
Ala. +, Fla. +, Ga. +  and S.C. +
not +  and aggregated +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
dark purple +  and nearly black +
globose +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
20–700 m +
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 +
Rocky slopes and ridges, sandhills, mixed oak-pine-hickory forests +
rusty brown +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
18-55(-90)-flowered +
crassinucellate +
deciduous +
entire +, crenulate-serrulate +  and serrate +
glandular-toothed +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and apical +
hairy +  and glabrous +
0.1 cm1 mm <br />0.001 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
obovate;suborbiculate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2.3 cm23 mm <br />0.023 m <br /> (3 cm30 mm <br />0.03 m <br />) +
hairy +  and glabrate +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Flowering Apr–May +  and fruiting Jun–Aug. +
adnate +, free +, connate +  and distinct +
50mm +  and 160mm +
not arillate +
free +  and distinct +
erect-spreading +  and reflexed +
obovate +, lanceolate +, ovate-elliptic +, oblong +, ovate +, semicircular +  and triangular +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
free +  and distinct +
branched +  and simple +
1 +  and 20 +
linear;lanceolate +
not flattened +  and subglobose +
deciduous +
distinct +
basal +, lateral +, subterminal +  and terminal +
not elongate +
Padus alabamensis +, P. australis +, P. cuthbertii +  and Prunus serotina subsp. hirsuta +
Prunus serotina var. alabamensis +
Prunus serotina +
variety +
callus-tipped +  and glandular +
appressed +  and incurved +
blunt +  and sharp +
inconspicuous +
tree +, not suckering +  and shrub +
hairy +  and glabrous +