佛手又名佛手柑,五指柑,佛指香橼,属芸香科,是枸橼的一个变种。一年开花2-3次。春天开花,结的果实叫伏果。夏季不开花或开花少,结的果实,前端半分半合。秋天开花,结的果实叫秋果。花的颜色因品种不同,有白色、紫色、红色三种。白、紫花品种,伏果为开佛手,果实先端若干分裂如指;秋果为拳佛手,先端呈握拳状。红花品种不管春秋都是结拳佛手。花簇生于叶腋,或排列成圆锥花序。一簇花中,少数花心发绿、花大,这是可孕的花。其余不孕的花,子房黄色,形稍小。果实冬至前成熟,黄 Bergamot, also known as bergamot, five fingers orange, Buddha refers to citron, is Rutaceae, citron is a variant. Flowering 2-3 times a year. Spring flowers, knot fruit called fruit. Summer is not flowering or flowering less, knot of fruit, the front half and a half hours. Autumn flowers, knot is called the autumn fruit. Flower color due to different varieties, there are white, purple, red three. White, purple varieties, the fruit is open Buddha bergamot, fruit apex split as many means; autumn fruit for the punching bergamot, the first was fist-shaped. Saffron varieties regardless of spring and autumn are knot boxer. Flower clusters in leaf axils, or arranged as a panicle. A cluster of flowers, a few green flowers, flowers, this is fertile flowers. The remaining infertile flowers, ovary yellow, slightly smaller shape. Fruit ripe before winter solstice, yellow