Tetradis

Tetradis is a genus of flowering plants in the family Asteraceae. The genus contains a single species, Tetradis brasiliensis, commonly known as "camará" or "flor-de-cabeludo." This plant is native to Brazil, where it is found in various habitats, including sandy coastal areas and rocky outcrops.

Tetradis brasiliensis is a perennial herb or subshrub that typically grows to a height of about 30 to 60 centimeters. It has erect, slender stems and lanceolate leaves. The most distinctive feature of the plant is its flower heads, which are bright yellow and borne in terminal clusters. Each flower head is composed of numerous small ray florets and disc florets. The blooming period usually occurs during the spring and summer months.

The plant is known for its resilience and ability to thrive in challenging conditions. In its native environment, it plays a role in stabilizing sandy soils. While not widely cultivated, Tetradis brasiliensis has some traditional uses, particularly in folk medicine, where its leaves have been used for their purported anti-inflammatory properties. However, scientific validation of these uses is limited. The genus name "Tetradis" is derived from Greek words referring to the four-part structure of its ovary.