Ye Qi fancy liriodendron (Figure)

Liriodendron is a deciduous tree with gray bark. Leaves alternate, leaf-shaped, horse-shaped, long-stemmed, stipules and petiole free, apex truncate or dimpled at tip, with one or two lateral fissures near base. The flowers are odorless, single-branched, open at the same time as leaves, bisexual, 9 tepals, 3 rounds, nearly equal, inside and outside of the drug. The gynophore is sessile, with many carpels, spirally arranged, separated, and the lowest infertility. Each carpel has two ovules, which sag from the top of the ovary. Aggregate fruit spindle shape, when the carpels mature, wood, seed coat and endocarp healed, the top extends into a wing-shaped, mature fall off from the receptacle, the receptacle on the lodging branches. Seeds 1 to 2 with thin, dry seed coat, embryos in endosperm.

In the Mesozoic Cretaceous period, fossils were found in Japan, Greenland, Italy, and France. By the Third Age of the Cenozoic era, there were more than 10 species widely distributed in the tropical regions of the Northern Hemisphere and most of the species were extinct during the Quaternary Ice Age. There are only two solitary brothers who are far away across the Pacific Ocean. China Liriodendron is distributed in China and northern Vietnam. Liriodendron tulip is distributed in southeastern North America. In 1963, Mr. Ye Peizhong of Nanjing Forestry University used the mother of Liriodendron chinense as a female parent to crossbreed with Liriodendron tulipifera to breed a hybrid offspring, which showed that the growth potential exceeded the parents, and the leaves were late and strong.

How to distinguish between these three kinds of Liriodendron? From the leaves, the Chinese Liriodendron each usually has 1 crack on both sides, and is deeper in the middle. There are papillary white spots on the back of the old leaves; on both sides of the Liriodendron tulip has two to three cracks, not to The middle part is concave, and the old leaves have no white powder on the back; the variation of the hybrid leaf shape is larger. From stems and branches, the bark of Chinese Liriodendron tulipifera is grayish white, with no prominent grooves, and its branchlets are gray or gray-brown. The bark of Liriodendron tulip has a purple-brown color with deep grooves and branchlets brown or purple-brown. From flowers and fruits, Chinese Liriodendron cups are cup-shaped, ranging in size from 4 cm to 5 cm. The outer part of the tepals are light green, with a distinct yellow longitudinal pattern, and the inner surface is yellow. The aggregate fruit length is 7 cm to 9 cm. The tip of the winged nutlet is blunt; the tulip flower bowl is shaped like a orange-red broad band on the inside of the inner part of the tepal, and the length of the aggregated fruit is 6 cm to 8 cm, and the tip of the winged nutlet is pointed. Hybrids are bell-shaped. The edges and bases of the petals are yellow-green and light orange-yellow in the middle with more black spots. The fruit is larger than the parents.

In addition, the Magnoliaceae plants also include Ledong pseudo-monotropical magnolias of the genus Magnolia, monosomic magnolia of the genus Magnolia, and long mullerin of the genus Magnolia. This article is limited in length and will not be introduced one by one.

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