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FOC | Family List | FOC Vol. 15 | Oleaceae

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.

1 Branches hollow; calyx lobes (5-)6-7 mm; fruit stalk 7-20 mm.   (2)
+ Branchlets with lamellate pith; calyx lobes not exceeding 5 mm; fruit stalk less than 7 mm.   (3)
2 (1) Leaves serrate, simple or 3-parted to 3-foliolate   1 Forsythia suspensa
+ Leaves entire, all simple   2 Forsythia mira
3 (1) Leaf margin serrate or dentate.   (4)
+ Leaf margin entire or sparsely and minutely serrate.   (5)
4 (3) Leaf blade long elliptic to lanceolate, or long obovate-elliptic, glabrous   3 Forsythia viridissima
+ Leaf blade broadly ovate, elliptic, or suborbicular, abaxially hairy   4 Forsythia mandschurica
5 (3) Leaf blade hairy or glabrous, entire or minutely serrate   5 Forsythia giraldiana
+ Leaf blade glabrous, entire   6 Forsythia likiangensis

Lower Taxa


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