Common Lilac (Standard Lilac, French Lilac)
Kingdom: Plantae, Division: Magnoliophyta, Class: Magnoliopsida, Order: Lamiales, Family: Oleaceae, Genus: Syringa, Species: Syringa vulgaris · Oleaceae (Olive family) · Simple and deciduous
Species
Syringa vulgaris
Leaf Type
Simple and deciduous
Family
Oleaceae (Olive family)
Shape
Broadly ovate to sub-cordate (heart-shaped) with a pointed tip (acuminate)
Size
Approximately 2 to 5 inches (5-12 cm) long and nearly as wide. The specimen shown is likely within the 3-4 inch range.
Margin
Entire (smooth), lacking teeth or serration
Arrangement
Opposite on the stem
Rarity
Very Common (Ubiquitous in temperate landscape gardening and naturalized hedgerows).
Color & Pattern
A rich, vibrant mid-to-dark green (adaxial) and slightly lighter underneath (abaxial). In the image, the backlit view highlights a complex bright green reticulate network; no variegation or significant autumn color change occurs (leaves usually fall green or brown).
Venation Pattern
Pinnate with a prominent midrib; secondary veins curve toward the margin and form a distinct net-like (reticulate) pattern that becomes highly visible when backlit.
Texture & Surface
Smooth (glabrous) and slightly leathery or papery; matte finish, not glossy. Both surfaces are generally hairless.
Description
The leaf is heart-shaped at the base tapering to a point. The plant itself is a large deciduous shrub or multi-stemmed small tree growing up to 20 feet tall. It is renowned for its highly fragrant, conical panicles of four-lobed flowers in shades of lilac, purple, or white that bloom in late spring.
Key Features
Opposite leaf arrangement; smooth, entire margins; distinct heart-shape at the base; and the presence of terminal buds typically in pairs.
Habitat
Open woodlands, rocky hillsides, and widely naturalized in temperate gardens. Prefers well-drained, neutral to slightly alkaline soil and full sun for best flowering.
Geographic Range
Native to the Balkan Peninsula in Southeastern Europe; widely naturalized and cultivated across North America, Europe, and Asia.
Condition Notes
The leaf appears healthy with good chlorophyll saturation. The visible mesh-like yellowing in the veins is likely due to the lighting used for the photograph rather than chlorosis. There is no sign of Powdery Mildew, which is the most common affliction for this species. Condition: Excellent.
Interesting Facts
Lilacs are members of the Olive family. In the language of flowers, purple lilacs symbolize first love, while white lilacs represent innocence. Many cultivars, known as 'French Lilacs,' were developed in the late 19th century by the Lemoine nursery in France.
Medicinal & Uses
Mainly used as an ornamental landscape plant. Historically, lilac extracts were used in folk medicine to treat fevers and indigestion. It is also a major source of fragrance for perfumes and soaps.
Ecological Role
Provides nectar for various butterflies, moths (such as the Hummingbird Clearwing), and bees. It serves as cover for small birds but isn't a primary food source for native North American wildlife.
Similar Species
Syringa reticulata (Japanese Tree Lilac) which has more lanceolate leaves and cherry-like bark; Ligustrum (Privet) which has much smaller, more elliptical leaves.
Foraging Tips
Best identified in May-June by its unmistakable scent and flower clusters. Look for the opposite, smooth-edged heart-shaped leaves in garden borders or abandoned homesteads where they often persist for decades.
Toxicity Warning
Non-toxic to humans, cats, and dogs; however, it is not traditionally considered an edible plant for humans. Safety rating: Safe.