A detailed introduction of lilacs

Lilacs are deciduous shrubs or small trees. Branchlets subcylindric or quadrangular, lenticellate. Winter buds are covered with bud scales, and terminal buds are often lacking. Leaves opposite, simple, sparsely compound, entire, sparsely divided; Petiole. Flowers bisexual, cymes arranged in panicles, terminal or lateral, pumped out at the same time or after leaves; Having pedicels or pedicels; Calyx small, bell-shaped, 4-toothed or irregularly toothed, or subtruncate, persistent.

The corolla of clove is funnel-shaped, saucer-shaped or nearly round, with 4 lobes, spreading or nearly upright, and the buds are arranged in tweezers; 2 stamens, inserted from the throat of corolla tube in the middle of corolla tube, contained or extended; The ovary is 2-loculed with 2 pendulous ovules in each locule. Style filiform, shorter than stamens, stigma 2-lobed. Fruit is a capsule, slightly flat, 2-loculed, loculed; The seeds are flat and winged; Cotyledons ovate, flat; Radicle upward.

Geographical distribution and growth environment of lilac

Lilacs are mainly distributed in subtropical subalpine, hillside forest edge from warm temperate zone to temperate zone, undergrowth and sunny shrub in cold temperate zone. Hillsides, jungles, canyons and streams, valleys and beaches, 300-2400 meters above sea level.

Cultivated varieties are widely cultivated in gardens. I like sunshine, warmth, humidity and sunshine. Slightly tolerant to shade, weak growth in shade or semi-shade, and few flowers. It has certain cold tolerance and strong drought tolerance. Not strict with soil, barren, fertile and well-drained soil is preferred, and planting in low-lying areas is prohibited. Water accumulation will lead to disease until the whole plant dies. Transplant bare roots after defoliation and before germination, and plant them in the sunny place with fertile soil and good drainage.

Qinling Mountain is an important distribution area of Syringa from northwest to central China. North China and Northeast China respectively own about 30% of the resources of this genus. Lilac is endemic to North China, and the other six species are distributed in southwest, northwest and northeast China. Wild species in the mountainous areas of Northeast China are also distributed in the provinces of Northwest China and North China. In addition, lilacs from North China, which are widely distributed in China, are also distributed in Central China and East China.

Baidu Encyclopedia-Syringa