**Tetragonotheca**
**Definition**
Tetragonotheca is a genus of flowering plants in the family Asteraceae, native to North America. These perennial herbs are known for their distinctive flower heads and are commonly found in sandy or rocky habitats.
**Overview**
Tetragonotheca species typically feature yellow ray florets and a unique four-angled fruit, which is the origin of the genus name. The plants grow low to the ground and have a rosette of basal leaves. They are adapted to dry, open environments and contribute to local ecosystems by providing nectar for pollinators.
**Distribution and Habitat**
This genus is primarily distributed in the southeastern United States, thriving in well-drained soils such as sandy plains and rocky outcrops. Their resilience to drought conditions makes them important components of their native habitats.
**Taxonomy and Species**
Tetragonotheca belongs to the tribe Millerieae within the Asteraceae family. Several species have been identified, with Tetragonotheca helianthoides being one of the more commonly studied members.
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**Meta Description**
Tetragonotheca is a genus of perennial flowering plants in the Asteraceae family, native to the southeastern United States. Known for their yellow flowers and four-angled fruits, these plants thrive in dry, sandy habitats.