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Syringa
From Wikipedia, the free encyclopedia
| Syringa | ||||||||||||
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 Syringa vulgaris (Common Lilac) flowers
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About 20 species; see text. |
Syringa (Lilac) is a genus of about 20–25 species of flowering plants in the olive family (Oleaceae), native to Europe and Asia.[1][2][3][4]
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), and in most species simple and heart-shaped to broad lanceolate, 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 and pale pink 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.[2][3][4][5]
The genus is most closely related to Ligustrum (privet), classified with it in Oleaceae tribus Oleeae subtribus Ligustrinae.[6]
Lilacs are used as food plants by the larvae of some Lepidoptera species including Copper Underwing, Scalloped Oak and Svensson's Copper Underwing.
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Lilacs are popular shrubs in parks and gardens throughout the temperate zone. In addition to the species listed above, several hybrids and numerous cultivars have been developed. The term French lilac is often used to refer to modern double-flowered cultivars, thanks to the work of prolific breeder Victor Lemoine.
Lilacs flower on old wood, and produce more flowers if unpruned. If pruned, the plant responds by producing fast-growing young vegetative growth with no flowers, in an attempt to restore the removed branches; a pruned lilac often produces few or no flowers for one to five or more years, before the new growth matures sufficiently to start flowering. Unpruned lilacs flower reliably every year. Despite this, a common fallacy holds that lilacs should be pruned regularly. If pruning is required, it should be done right after flowering is finished, before next year's flower buds are formed. Lilacs generally grow better in slightly alkaline soil.
Lilac bushes can be prone to powdery mildew disease, which is caused by poor air circulation.
The wood of lilac is close-grained, diffuse-porous, extremely hard and one of the densest in Europe. The sapwood is typically cream-coloured and the heartwood has various shades of brown and purple. Lilac wood has traditionally been used for engraving, musical instruments, knife handles etc. When drying the wood has a tendency to be encurved as a twisted material, and to split into narrow sticks. The wood of Common Lilac is even harder than for example that of Syringa josikaea.
The genus name Syringa is derived from syrinx meaning a hollow tube or pipe, and refers to the broad pith in the shoots in some species, easily hollowed out to make reed pipes and flutes in early history.[5][7]
A pale purple colour is generally known as lilac after the flower.
Purple lilacs symbolise first love and white lilacs youthful innocence (see Language of flowers).
Syringa vulgaris is the state flower of New Hampshire, because it "is symbolic of that hardy character of the men and women of the Granite State" (New Hampshire Revised Statute Annotated (RSA) 3:5).
Numerous locations around North America hold yearly Lilac Festivals, the longest-running of which is the one in Rochester, New York.
Lombard, Illinois is known as The Lilac Village. Its "Lilacia Park", landscaped by Jens Jensen, features 1,200 lilacs and more the 25,000 tulips on 8.5 horticultural acres. Every May since 1929, Lombard has hosted Lilac Time featuring a number of events for lilac enthusiasts.
- ^ a b Flora Europaea: Syringa
- ^ a b c Flora of China: Syringa
- ^ a b c Flora of Pakistan: Syringa
- ^ a b c Germplasm Resources Information Network: Syringa
- ^ a b 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
- ^ Vedel, H., & Lange, J. (1960). Trees and Bushes in Wood and Hedgerow. Metheun & Co. Ltd., London.
 Mature seed capsules of Syringa vulgaris |
 Syringa vulgaris leaves |
 Syringa emodi flowers |