Michel Buchner Common Lilac - Syringa vulgaris 'Michel Buchner'
Family Oleaceae - Olive, Ash, Lilac
This variety is famous for its abundant purple flowers and outstanding fragrant flowers
Tree Encyclopedia | Trees Index | Family Oleaceae

Flowers of Michel Buchner are double, lilac-pink with white throats, borne on 12 inch long panicles. This species is the common lilac, also referred to as French lilac, that most of us are familiar with; extremely fragrant flowers appearing in late spring to early summer. Syringa is a genus of about 20–25 species of flowering plants in the olive family (Oleaceae), native to Europe and Asia and naturalized worldwide [5].

Deciduous shrubs or small trees, ranging in size from 2–10 m tall, lilacs are some of our most beloved flowering shrubs for the home landscape. The leaves are opposite, simple, and heart-shaped to broad lanceolate in most species, pinnate in a few species. 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 [4].

Lilacs 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.

The genus is most closely related to Ligustrum (privet), classified with it in Oleaceae tribus Oleeae subtribus Ligustrinae. Lilacs are used as food plants by the larvae of some Lepidoptera species including Copper Underwing, Scalloped Oak and Svensson's Copper Underwing and Saras. [4]

References
  1. Michel Buchner Common Lilac, Morton Arboretum acc. 633-73*1, photos © Bruce Marlin
  2. Morton Arboretum, Crabapples for the Home Landscape
  3. Wikipedia, the Free Encyclopedia, Oleaceae
  4. Wikipedia, Syringa
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Family Oleaceae - Olive, Ash, Lilac
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