|Syringa vulgaris (Common Lilac) flowers|
About 20 species; see text.
They are deciduous shrubs or small trees, ranging in size from 2-10 m tall, with stems up to 20-30 cm diameter. The leaves are opposite (occasionally in whorls of three) in arrangement, and their shape is simple and heart-shaped to broad lanceolate in most species, but pinnate in a few species (e.g. S. protolaciniata, S. pinnatifolia). The flowers are produced in spring, each flower being 5-10 mm in diameter with a four-lobed corolla, the corolla tube narrow, 5-20 mm long; they are bisexual, with fertile stamens and stigma in each flower. The usual flower colour is a shade of purple (often a light purple or lilac), but white, pale yellow and pink, and even a dark burgundy color are also found. The flowers grow in large panicles, and in several species have a strong fragrance. Flowering varies between mid spring to early summer, depending on the species. The fruit is a dry, brown capsule, splitting in two at maturity to release the two winged seeds.
- ↑ Flora Europaea: Syringa
- ↑ 2.0 2.1 Flora of China: Syringa
- ↑ 3.0 3.1 Flora of Pakistan: Syringa
- ↑ 4.0 4.1 Germplasm Resources Information Network: Syringa
- ↑ Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN 0-333-47494-5.
- ↑ University of Oxford, Oleaceae information site: New classification of the Oleaceae