杏花在蓝色背景下绽放并旋转的延时视频。

flower blooming and rotating against blue background in a time lapse. Prunus dulcis. The almond (Prunus amygdalus, syn. Prunus dulcis) is a species of tree native to Iran and surrounding countries and ancient remains of almonds were discovered in the Levant area. The almond is also the name of the edible and widely cultivated seed of this tree. Within the genus Prunus, it is classified with the peach in the subgenus Amygdalus, distinguished from the other subgenera by corrugations on the shell (endocarp) surrounding the seed. The fruit of the almond is a drupe, consisting of an outer hull and a hard shell with the seed, which is not a true nut, inside. Shelling almonds refers to removing the shell to reveal the seed. Almonds are sold shelled or unshelled. Blanched almonds are shelled almonds that have been treated with hot water to soften the seedcoat, which is then removed to reveal the white embryo.