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FOC | Family List | FOC Vol. 15 | Oleaceae

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.

1 Corolla deeply divided, lobes longer than corolla tube; leaf blade margin entire.   (2)
+ Corolla lobes shorter than corolla tube; leaf blade margin entire or serrate.   (5)
2 (1) Leaf blade with domatia in axils of primary veins and midrib abaxially   1 Olea paniculata
+ Leaf blade without domatia.   (3)
3 (2) Leaf blade densely lepidote abaxially   2 Olea europaea
+ Leaf blade not lepidote abaxially.   (4)
4 (3) Leaf blade margin strongly revolute, apex obtuse   3 Olea parvilimba
+ Leaf blade margin slightly revolute, apex acuminate to caudate-acuminate   4 Olea caudatilimba
5 (1) Branchlets, peduncles, and pedicels 4-angled   5 Olea tetragonoclada
+ Branchlets, peduncles, and pedicels terete or compressed.   (6)
6 (5) Leaf blade narrowly lanceolate, 7-8 × as long as broad   6 Olea neriifolia
+ Leaf blade not narrowly lanceolate, less than 4 × as long as broad.   (7)
7 (6) Pedicel 6-10 mm   7 Olea laxiflora
+ Pedicel less than 5 mm.   (8)
8 (7) Apex of leaf blade obtuse, rounded or acute, to slightly acuminate, base attenuate, rarely broader   10 Olea tsoongii
+ Apex of leaf blade acuminate to caudate-acuminate, sometimes only slightly so, base cuneate or obtuse.   (9)
9 (8) Leaves pilose to villous abaxially, especially on midrib and primary veins; inflorescences densely villous   9 Olea rosea
+ Leaves glabrous abaxially; inflorescence glabrous or hairy, sometimes finely so.   (10)
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   12 Olea brachiata
+ 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.   (11)
11 (10) Petiole 2-7 mm; inflorescences glabrous; fruit globose or subglobose, 1-1.5 cm in diam.   11 Olea guangxiensis
+ Petiole 5-10 mm; inflorescences pubescent; fruit ellipsoid to ovoid, 1.2-1.8 cm.   (12)
12 (11) Leaves oblong-elliptic, elliptic-lanceolate, ovate-oblong, to slightly oblanceolate, apex acuminate or slightly so; fruit ellipsoid, 1.4-1.8 cm   8 Olea hainanensis
+ Leaves lanceolate, apex long acute-acuminate; fruit narrowly ovoid, 1.2-1.5 cm   13 Olea salicifolia

  • List of lower taxa


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