Prunus fasciculata
Prunus angustifolia
desert almond, desert peach, wild almond
Cherokee plum, Chickasaw plum, Chickasaw plume, Florida sand plum, sandhill plum
with axillary end buds, glabrous or canescent.
with axillary end buds, glabrous.
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).
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.
solitary flowers or 2-flowered fascicles.
2–4-flowered, umbellate fascicles.
0–4 mm, glabrous.
3–10 mm, glabrous.
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.
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.
gray to red-brown, ovoid, ± compressed, 7–15 mm, densely puberulent;
hypanthium tardily deciduous;
mesocarps leathery to dry;
stones ovoid, ± flattened.
red to yellow, lightly glaucous, globose to ellipsoid, 15–20 mm, glabrous;
mesocarps fleshy;
stones ovoid, ± flattened.
= 16.
Prunus fasciculata
Prunus angustifolia
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
1. Leaf blades sparsely to densely puberulent, not papillate. | var. fasciculata |
1. Leaf blades glabrous, sometimes papillate. | var. punctata |
CA
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