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3. Forsythia Vahl, Enum. Pl. 1: 39. 1804.
连翘属 lian qiao shu
Rangium Jussieu.
Shrubs deciduous. Branches hollow or with lamellate pith; branchlets ± 4-angled. Leaves opposite, simple, rarely 3-parted to 3-foliolate, petiolate; leaf blade serrate or entire. Flowers appearing before leaves, bisexual, heterostylous, 1 to several fascicled in leaf axils, pedicellate. Calyx deeply 4-lobed, persistent. Corolla yellow, 4-parted; tube campanulate; lobes longer than tube, imbricate in bud. Stamens 2, inserted at base of corolla tube, scarcely exserted. Ovules many in each locule, pendulous. Style slender; stigma 2-cleft. Fruit a loculicidal capsule. Seeds numerous in each locule, slightly winged; endosperm absent; radicle erect.
About 11 species: mainly in eastern Asia, one in SE Europe; six species in China.
Most species are grown as ornamental shrubs for early spring. The fruit of some species are used medicinally.
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| 1 |
Branches hollow; calyx lobes (5-)6-7 mm; fruit stalk 7-20 mm. |
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(2) |
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Branchlets with lamellate pith; calyx lobes not exceeding 5 mm; fruit stalk less than 7 mm. |
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(3) |
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| 2 (1) |
Leaves serrate, simple or 3-parted to 3-foliolate |
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1 Forsythia suspensa |
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Leaves entire, all simple |
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2 Forsythia mira |
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| 3 (1) |
Leaf margin serrate or dentate. |
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(4) |
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Leaf margin entire or sparsely and minutely serrate. |
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(5) |
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| 4 (3) |
Leaf blade long elliptic to lanceolate, or long obovate-elliptic, glabrous |
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3 Forsythia viridissima |
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Leaf blade broadly ovate, elliptic, or suborbicular, abaxially hairy |
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4 Forsythia mandschurica |
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| 5 (3) |
Leaf blade hairy or glabrous, entire or minutely serrate |
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5 Forsythia giraldiana |
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Leaf blade glabrous, entire |
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6 Forsythia likiangensis |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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