man-of-the-earth

• 一种旋花科（牵牛花）植物，具有巨大的淀粉质块根，原产于美国西部及热带美洲，常被认为与甘薯同源。

A noun referring to a morning glory with long roots native to the western United States, or a tropical American prostrate or climbing herbaceous perennial with an enormous starchy root, sometimes considered the source of the sweet potato.

1. C1formalamericanscientific

   A morning glory plant (Ipomoea leptophylla) with long, thick roots, native to the western United States.

   牵牛花植物

   • The man-of-the-earth is known for its deep, tuberous root system.
   • Hikers in the Great Plains sometimes encounter the man-of-the-earth in bloom.
   • The man-of-the-earth's root can grow several feet into the ground.

2. Tropical vineC1formalamericanscientific

   A tropical American prostrate or climbing herbaceous perennial (Ipomoea batatas) with an enormous starchy root; sometimes considered the source of the sweet potato.

   热带藤本植物

   • The man-of-the-earth is cultivated in many tropical regions for its edible root.
   • Some botanists believe the man-of-the-earth is the wild ancestor of the sweet potato.
   • The man-of-the-earth vine can spread rapidly across the ground.

   同义词sweet potato