What is the purpose of the spur on the impatiens flower?

The spur on the impatiens flower serves as a nectar reservoir, attracting pollinators such as bees and butterflies. This structure allows the flower to effectively dispense nectar while encouraging pollinators to linger, thereby increasing the chances of successful pollination. The unique shape and positioning of the spur also help guide pollinators to the reproductive parts of the flower, enhancing reproductive success.