Sideroxylon celastrinum
Sideroxylon
bumelia, coma, saffron plum
bully
not armed or armed with thorns, glabrous or glabrate to tomentose, villous, or strigose, often glabrescent (hairs tawny or reddish brown to brown).
deciduous;
petiole 1–6.5 mm, glabrous;
blade (dark green adaxially), broadly elliptic, obovate, oblanceolate, or spatulate, 6–38 × 3–23 mm, base attenuate to cuneate, margins plane, apex rounded to obtuse, surfaces glabrous, tertiary and smaller veins not prominent (inconspicuously reticulate), midrib flat, marginal vein present.
deciduous or persistent, alternate and/or sometimes fascicled on short shoots;
stipules absent;
petiole present;
blade: base rounded, obtuse, cuneate, or acute to attenuate, apex rounded to obtuse, sometimes retuse, or acute to acuminate, surfaces glabrous or glabrate to villous, sericeous, or strigose abaxially, usually glabrose or glabrate, sometimes glabrescent adaxially.
4–12-flowered.
fascicles.
3–6 mm, glabrous.
calyx 1.8–3 mm diam.;
sepals 5, 1.7–3 × 0.9–1.9 mm, glabrous;
petals 5(–6), white to yellowish, median segment elliptic, 1.9–2.3 mm, lateral segments lanceolate, 1.3–2.3 mm;
stamens 5(–6), 2.2–2.9 mm;
staminodes lanceolate, 1.7–2.1 mm, minutely erose;
anthers lanceolate, 0.7–1 mm;
pistil 5-carpellate;
ovary 5-locular, 0.9–1.3 mm, hirsute to strigose basally;
style 2.2–2.8 mm.
sepals (4–)5(–6)[–8] in 1 whorl, imbricate, glabrous or glabrate to hairy abaxially;
petals (4–)5(–6), white or cream to yellowish or yellow, lobes longer than corolla tube, each divided into 1 median and 2 lateral segments or lateral segments vestigial or absent, median segment equaling or larger than lateral segments;
stamens (4–)5(–6), distinct distal to corolla tube;
staminodes (4–)5(–6), alternating with stamens, inflexed, petaloid, lanceolate, glabrous [hairy];
pistil (4–)5(–8)-carpellate;
ovary (4–)5(–8)-locular, glabrous or hairy.
purple to purplish black, ellipsoid, 8–12 mm, glabrous.
yellow to orange or purple to purplish black or black, subglobose or obovoid to ellipsoid, ovoid, or oblong, (frequently with apiculate stylar remnant), glabrous or glabrate.
6–11 mm.
1–2, buff to light brown, ellipsoid;
hilum ovoid to ellipsoid;
embryo vertical, oblique, or horizontal;
endosperm present or absent.
= 12.
Sideroxylon celastrinum
Sideroxylon
Sideroxylon celastrinum is widespread in the Neotropics. It differs from other North American species of the genus by its glabrous twigs, leaves, pedicels, and sepals, and its narrowly ellipsoid fruits. The fruits are edible (T. D. Pennington 1990).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Bumelia Swartz; Dipholis A. de Candolle; Mastichodendron (Engler) H. J. Lam
Species 69 (11 in the flora).
The generic concept of T. D. Pennington (1990, 1991) followed here includes nine species assigned previously to Bumelia, and one species each placed formerly in Dipholis and Mastichodendron (J. K. Small 1900; R. B. Clark 1942; A. Cronquist 1945b, 1945c). Characters used to segregate those genera included twig thorniness, corolla lobe segmentation, ovary indument, and endosperm presence. These characters vary considerably among species and segregate genera, which resulted in Pennington’s (1990) adoption of a broad concept of Sideroxylon without recognition of infrageneric groups. The division of the corolla lobes into three segments (shared with many species of Manilkara), the single whorl of five sepals, and the basal or basal-ventral seed scar represent a combination of character traits that defines Sideroxylon sensu Pennington (1990). U. Swenson and A. A. Anderberg (2005) provided strong support for a monophyletic tribe Sideroxyleae (12 species sampled) and a broad concept of Sideroxylon that included segregate genera, but they could not delineate Sideroxylon in the narrow sense with any synapomorphic morphological characters.
North American species of Sideroxylon have been described and differentiated predominantly using vegetative characters such as thorn presence, leaf length and width, leaf venation pattern, and twig and leaf indument density and color (J. K. Small 1900; R. B. Clark 1942; A. Cronquist 1945b, 1945c; T. D. Pennington 1990; R. P. Wunderlin and B. F. Hansen 2003). Corolla size and segmentation of the lobes, ovary indument, and fruit shape and length have been used to a lesser extent to differentiate species and infraspecific taxa. Character intergradation and polymorphism are especially marked among S. lanuginosum, S. lycioides, S. reclinatum, S. tenax, and S. thornei, resulting in identification difficulties and hypotheses of interspecific hybridization (Clark; Cronquist 1949).
Some species of Sideroxylon are sources of dried sap for chewing gum, wood for building materials, and edible fruits. Sideroxylon dulcificum A. de Candolle has fruits with flavor ranging from sweet to bitter, making it important in the food industry.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Abaxial leaf surfaces glabrous or glabrate (hairs scattered along midribs) | → 2 |
1. Abaxial leaf surfaces hairy | → 8 |
2. Petioles 14-51 mm; berries yellow to orange; lateral segments of corolla lobes vestigial or absent. | S. foetidissimum |
2. Petioles 1-14 mm; berries purple to purplish black; lateral segments of corolla lobes lanceolate or falcate | → 3 |
3. Leaf apices acute to acuminate | → 4 |
3. Leaf apices rounded to obtuse | → 5 |
4. Sepals glabrous; pedicels glabrous. | S. lycioides |
4. Sepals hairy; pedicels hairy | S. salicifolium |
5. Abaxial leaf surfaces without prominent tertiary and smaller leaf veins; styles 2.2-2.8 mm. | S. celastrinum |
5. Abaxial leaf surfaces with prominent tertiary and smaller leaf veins; styles 0.7-1.5 mm | → 6 |
6. Sepals lanate-villous; petioles villous or sparsely hairy. | S. lanuginosum |
6. Sepals glabrous; petioles glabrous or glabrate | → 7 |
7. Berries 9-16 mm; median segment of corolla lobes 1.8-2 mm. | S. lycioides |
7. Berries 4-9 mm; median segment of corolla lobes 1.1-1.3 mm. | S. reclinatum |
8. Abaxial leaf hairs silvery or white to gray, rarely tawny | → 9 |
8. Abaxial leaf hairs tawny or reddish brown to brown | → 11 |
9. Abaxial leaf surfaces sericeous, hairs silvery. | S. alachuense |
9. Abaxial leaf surfaces villous or sparsely strigose, hairs white to gray, rarely tawny | → 10 |
10. Mature plants 1+ m; abaxial leaf surfaces villous; sepals 1.4-1.9 mm wide. | S. lanuginosum |
10. Mature plants to 1 m; abaxial leaf surfaces sparsely strigose; sepals 0.8-1.2 mm wide. | S. macrocarpum |
11. Abaxial leaf venation obscured by hairs. | S. tenax |
11. Abaxial leaf venation visible through hairs | → 12 |
12. Mature plants to 1 m; leaf hairs reddish brown to brown. | S. rufohirtum |
12. Mature plants 1+ m; leaf hairs tawny, sometimes reddish brown | → 13 |
13. Pedicels glabrous or glabrate; sepals glabrous to villous. | S. thornei |
13. Pedicels strigose, villous, or rarely glabrous; sepals lanate or strigose | → 14 |
14. Sepals 1.4-1.9 mm wide; pedicels lanate or glabrous. | S. lanuginosum |
14. Sepals 1-1.3 mm wide; pedicels strigose. | S. reclinatum |
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