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7. Olea Linnaeus, Sp. Pl. 1: 7. 1753.
木犀榄属 mu xi lan shu
Tetrapilus Loureiro.
Trees or shrubs, evergreen, sometimes polygamodioecious. Leaves opposite, simple, petiolate; leaf blade entire or serrate. Inflorescences axillary or terminal panicles, sometimes racemes or umbels. Flowers small, bisexual or unisexual. Calyx small, campanulate, 4-lobed to subtruncate; lobes deltate or ovate, usually ciliate. Corolla with a short tube, 4-lobed; lobes shorter or longer than tube, usually valvate in bud, cucullate. Stamens 2(-4), inserted at base of corolla tube, included; filaments short or absent; anthers ovate, elliptic, or subrounded. Ovules 2 in each locule, pendulous. Style short or absent; stigma capitate or slightly 2-cleft. Fruit a drupe; endocarp thick and hard, sometimes papery. Seeds often 1; endosperm fleshy or bony; radicle short, upward.
More than 40 species: Africa, Asia, Europe, Australia and Pacific Islands. 13 species in China.
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| 1 |
Corolla deeply divided, lobes longer than corolla tube; leaf blade margin entire. |
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(2) |
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Corolla lobes shorter than corolla tube; leaf blade margin entire or serrate. |
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(5) |
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| 2 (1) |
Leaf blade with domatia in axils of primary veins and midrib abaxially |
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1 Olea paniculata |
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Leaf blade without domatia. |
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(3) |
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| 3 (2) |
Leaf blade densely lepidote abaxially |
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2 Olea europaea |
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Leaf blade not lepidote abaxially. |
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(4) |
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| 4 (3) |
Leaf blade margin strongly revolute, apex obtuse |
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3 Olea parvilimba |
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Leaf blade margin slightly revolute, apex acuminate to caudate-acuminate |
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4 Olea caudatilimba |
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| 5 (1) |
Branchlets, peduncles, and pedicels 4-angled |
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5 Olea tetragonoclada |
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Branchlets, peduncles, and pedicels terete or compressed. |
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(6) |
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| 6 (5) |
Leaf blade narrowly lanceolate, 7-8 × as long as broad |
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6 Olea neriifolia |
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Leaf blade not narrowly lanceolate, less than 4 × as long as broad. |
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(7) |
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| 7 (6) |
Pedicel 6-10 mm |
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7 Olea laxiflora |
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Pedicel less than 5 mm. |
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(8) |
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| 8 (7) |
Apex of leaf blade obtuse, rounded or acute, to slightly acuminate, base attenuate, rarely broader |
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10 Olea tsoongii |
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Apex of leaf blade acuminate to caudate-acuminate, sometimes only slightly so, base cuneate or obtuse. |
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(9) |
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| 9 (8) |
Leaves pilose to villous abaxially, especially on midrib and primary veins; inflorescences densely villous |
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9 Olea rosea |
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Leaves glabrous abaxially; inflorescence glabrous or hairy, sometimes finely so. |
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(10) |
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| 10 (9) |
Leaves elliptic to elliptic-lanceolate, sometimes broadly so or ovate, (3-)5-6(-9) × (1.2-)2.5-3(-4), apex usually short caudate-acuminate; petiole puberulent |
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12 Olea brachiata |
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Leaves ovate-oblong to lanceolate or slightly oblanceolate, (6-)8-15(-23) × (2-)3-5(-8) cm, apex long acute-acuminate or acuminate, not shortly so; petiole glabrous. |
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(11) |
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| 11 (10) |
Petiole 2-7 mm; inflorescences glabrous; fruit globose or subglobose, 1-1.5 cm in diam. |
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11 Olea guangxiensis |
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Petiole 5-10 mm; inflorescences pubescent; fruit ellipsoid to ovoid, 1.2-1.8 cm. |
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(12) |
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| 12 (11) |
Leaves oblong-elliptic, elliptic-lanceolate, ovate-oblong, to slightly oblanceolate, apex acuminate or slightly so; fruit ellipsoid, 1.4-1.8 cm |
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8 Olea hainanensis |
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Leaves lanceolate, apex long acute-acuminate; fruit narrowly ovoid, 1.2-1.5 cm |
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13 Olea salicifolia |
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List of lower taxa
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Treatments in Other Floras @ www.efloras.org
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