coneflower

1. Coneflower of central to southwestern United States.
   美国中部到西南部的拉提比达菊。
2. Plant similar to the Mexican hat coneflower; from British Columbia to New Mexico. some gas pools in the Pliocene and Pleistocene of the Gulf Coast seem to be of this relatively immature thermal derivation.
   生长在哥伦比亚至新墨西哥地区。墨西哥湾岸盆地某些渐新统和更新统气藏可能就属于这类相对低成熟的热成因气。

noun

1. any of various perennials of the eastern United States having thick rough leaves and long-stalked showy flowers with drooping rays and a conelike center

2. a wildflower of the genus Ratibida

3. any of various plants of the genus Rudbeckia cultivated for their large usually yellow daisies with prominent central cones