Hymenoclea

Hymenoclea is a genus of flowering plants in the family Asteraceae, commonly known as ragweeds. The genus is native to the southwestern United States and northwestern Mexico. Plants in this genus are typically annual or perennial herbs, often found in arid or semi-arid environments. They are characterized by their small, inconspicuous flowers, which are usually wind-pollinated. The leaves are generally pinnately compound.

There are typically two recognized species within the genus Hymenoclea: Hymenoclea salsola and Hymenoclea pachyphylla. Hymenoclea salsola, often called cheesebush or burrobrush, is a widespread species found in sandy soils and desert regions. Hymenoclea pachyphylla, less common, also inhabits arid areas.

The plants are known for their resilience in harsh conditions. While not widely cultivated, they play a role in their native ecosystems, providing habitat and sustenance for some local wildlife. In some instances, certain species have been investigated for potential medicinal uses, though these are not widely established or scientifically validated. The genus name Hymenoclea is derived from Greek words referring to the membranous nature of parts of the flower.