Prunus angustifolia
Prunus geniculata
Cherokee plum, Chickasaw plum, Chickasaw plume, Florida sand plum, sandhill plum
scrub plum
with axillary end buds, glabrous.
with axillary end buds, hairy.
deciduous;
petiole 2–14 mm, usually sparsely hairy on adaxial surface, rarely glabrous or hairy on both surfaces, usually eglandular, sometimes glandular distally, glands 1–2;
blade lanceolate to narrowly elliptic, usually folded along midribs, often ± falcate, 1.5–6 × 0.8–2 cm, base cuneate to obtuse, margins crenulate-serrulate, teeth blunt, glandular, glands reddish orange, conic, apex acute, abaxial surface glabrate with hairs along midribs and major veins, adaxial glabrous.
deciduous;
petiole 3–6 mm, hairy on adaxial surface, sometimes glandular distally, glands 1–2, discoid;
blade elliptic, 0.8–2.5 × 0.4–1.3 cm, base obtuse to rounded, margins crenulate-serrulate in distal 1/2, nearly entire on smaller leaves, teeth blunt, glandular, apex obtuse to rounded, mucronate, surfaces glabrous.
2–4-flowered, umbellate fascicles.
solitary flowers.
3–10 mm, glabrous.
0–3 mm, glabrous.
blooming before, sometimes at, leaf emergence;
hypanthium campanulate, 1.5–3 mm, usually glabrous, rarely hairy, externally;
sepals erect to spreading, ovate, 1–2 mm, margins entire, sparsely ciliate, abaxial surface glabrous, adaxial hairy;
petals white, suborbiculate to obovate, 3–6 mm;
ovaries glabrous.
usually bisexual with some staminate flowers on same plant, blooming before leaf emergence;
hypanthium campanulate, 2–3 mm, glabrous externally;
sepals erect to spreading, ovate, 1–1.5 mm, margins entire, ciliate, abaxial surface glabrous, adaxial hairy;
petals white, elliptic, 2 mm;
ovaries glabrous.
red to yellow, lightly glaucous, globose to ellipsoid, 15–20 mm, glabrous;
mesocarps fleshy;
stones ovoid, ± flattened.
reddish, ovoid, 12–25 mm, glabrous;
mesocarps fleshy;
stones ovoid, ± flattened.
= 16.
Prunus angustifolia
Prunus geniculata
A naturalized population of Prunus angustifolia in Santa Barbara County, California, has been extirpated.
Prunus angustifolia is one of the more distinctive plum species in North America. The leaves are relatively small, usually folded along their midribs, and have relatively large, reddish orange, conic glands along the margins. When it hybridizes with other plums, the hybrids often have distinctive characteristics and have been named as species more often than hybrids not involving P. angustifolia: P. ×orthosepala Koehne (angustifolia × americana), P. ×slavinii E. J. Palmer ex Rehder (angustifolia × gracilis), P. ×utahensis Koehne (angustifolia × pumila var. besseyi); see also discussion under 42. P. rivularis.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Prunus geniculata is known only from the Lake Wales Ridge in central Florida. Much of its original habitat has been lost to residential, recreational, and agricultural development; it received federal listing as an endangered species in 1987.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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