This is about spring flowers.
A, 0 Introduction: spring flowers (scientific name: Jasminum nudiflorum Lindl.): alias spring, yellow Susanna, golden belt, deciduous shrubs bushy. Plant height 30-100 cm. Branchlets slenderly erect or arching and pendulous, lanceolate. 3-foliolate compound leaves decussate, leaves ovate to oblong. Flowers are borne singly on last year's branches, opening before the leaves, fragrant, golden yellow, tinged with a reddish halo, flowering from February to April. Because it is the earliest among the hundred flowers, flowers that usher in the spring of the hundred flowers and so named.
Spring flowers and plum blossoms, daffodils and camellias are collectively known as the "four friends in the snow", is one of the common flowers in China. Spring flowers not only flower color dignified and beautiful, extraordinary temperament, with the fear of cold Wei, do not choose the terroir, adaptable characteristics, has always been loved by the people. Spring flowers cultivation history of more than 1,000 years, the Tang Dynasty Bai Juyi poem "on behalf of the spring flowers called Liu Langzhong" as well as the Song Dynasty Han Qi "in the book of the East Hall of the spring" and the Ming Dynasty Zhou Wenhua wrote "Ru Nan Nursery History," are recorded, the spring flowers are now for the city of Henan Province, the city of Hebi flower.
Two: Morphological Characteristics
The spring flower is a deciduous shrub plant, erect or creeping, 0.3-5 meters high, with pendulous branches. The branches are slightly twisted, smooth and glabrous, and the branchlets are 4-angled, more or less narrowly winged on the angles.
Leaves opposite, ternately compound, often simple at the base of branchlets; leaf rachis narrowly winged, petiole 3-10 mm long, glabrous; leaf blade and leaflets slightly hairy on both surfaces when young, only the margins of the leaves are lashed with eyelashes with age; leaflets ovate, long ovate, or elliptic, narrowly elliptic, sparsely obovate, apex acute or obtuse, mucronate, base cuneate, margins revolute, midrib above slightly concave, raised below, lateral veins inconspicuous; terminal leaflet larger, 1-3 cm long, 0.3-1.1 cm wide, sessile or basally extended into a short stalk, lateral leaflets 0.6-2.3 cm long, 0.2-11 cm wide, sessile; simple leaflets ovate or elliptic, sometimes suborbicular, 0.7-2.2 cm long, 0.4-1.3 cm wide.
Flowers solitary in the leaf axils of last year's branchlets, sparsely borne on the tips of the branchlets; bracts leaflet-like, lanceolate, ovate or elliptic, 3-8 mm long, 1.5-4 mm wide; pedicels 2-3 mm long; calyx green, with 5-6 lobes, narrowly lanceolate, 4-6 mm long, 1.5-2.5 mm wide, apex acute; corolla yellow, 2-2.5 cm in diameter.
Three: growth habit
Light-loving, slightly shade-tolerant, slightly cold-tolerant, afraid of waterlogging, in North China and the Visayas can be open-ground overwintering, requires a warm and humid climate, loose and fertile and well-drained sandy soil, grows vigorously in acidic soils, alkaline soils in poor growth. The root sprouting force is strong. The grounded part of the branch is extremely easy to root.
Four: Geographic Distribution
Produced in China in Gansu, Shaanxi, Sichuan, northwestern Yunnan, southeastern Tibet.