👉 The term "Helotrephinae" refers to a group of plants that are known for their unique characteristics and adaptations, including their ability to produce sweet sap in response to external stimuli. These plants are characterized by their hard outer bark, which is covered with a layer of specialized cells called "saccol," which helps them conserve moisture and protect the plant from predators. Additionally, they have a high tolerance for drought conditions and can grow in environments that are usually too dry for other species.