1, water lily
Water lily (scientific name: water lily? Perennial aquatic herbs; Hypertrophy of rhizome. Petiole cylindrical, slender. The leaves are oval, floating on the water, with the whole margin, heart-shaped base, dark green surface and deep purple back. Leaf type 2: floating leaves are round or oval, with curved base, heart-shaped or arrow-shaped, often without water; Submerged leaves are thin and brittle. Flowers are solitary, floating or sticking out of the water; Four calyx, green; Petals are usually eight. The fruit is obovate, about 3 cm long.
Flowers are large and beautiful, floating on or above the water surface, open during the day and closed at night; Sepals nearly free; Petals are white, blue, yellow or pink, with multiple rounds, and sometimes the inner round gradually becomes stamens; Connectors with or without appendages; Carpels are ring-shaped, attached to the fleshy cup-shaped receptacle, semi-submerged in it, the lower part of which is partially healed, the upper part extends into a style, the stigma is recessed into the stigma plate, and the ovule is inverted and stands upright on the inner wall of the ovary.
Berries are spongy, irregularly cracked and mature underwater; The seeds are hard, covered with colloid, with fleshy cup-shaped aril, small embryo, a small amount of endosperm and abundant exoendosperm.
2. Sesame
Sesame, also known as sesame and flax (scientific name: sesame), is an annual erect herb with a height of 60- 150 cm. It is distributed in tropical regions and some temperate regions all over the world. Sesame is one of the main oil crops in China and has high application value. The oil content of its seeds is as high as 55%. Since ancient times, there have been many colorful foods and delicacies made of sesame and sesame oil in China, which are famous all over the world.
Sesame is known as the crown of eight grains. Sesame is an oily crop. The pressed oil is called sesame oil, linseed oil and sesame oil, which is characterized by mellow smell and can be eaten raw or hot.
3. Willow
Willow is the general name of a plant: willow? Salix chinensis Salix? Kimura willow, weeping willow. Salix is mostly shrub, sparse tree, without terminal bud, sympodial branches, few stamens and insect-borne flowers, which indicates that Populus and Salix have evolved.
There are about 520 species of this genus in the world, mainly distributed in temperate regions of the northern hemisphere, followed by cold regions, tropical regions and southern hemisphere, and there are no wild species in Oceania. There are 257 species in China, 122 variety and 33 variety. All provinces and regions have production.
4. pine nuts
Pine nuts, also known as pine nuts, pine nuts and sea pine nuts, are the seeds of Pinus koraiensis in Pinaceae and one of the common nuts. Rich in fat, protein, carbohydrates, etc. It is an important Chinese medicine, which can keep healthy, moisturize the skin, prolong life and has high therapeutic value.
There are Brazil pine nuts, Northeast pine nuts and pine nuts in China, among which pine nuts are mainly from Yunguichuan mountain area.