cup-plant
plant
Also known as: Silphium perfoliatum
Quick Summary
cup plant
Cup plant (Silphium perfoliatum).
The cup plant (Silphium perfoliatum) is a tall, yellow-flowered perennial herb native to North America. Its distinctive feature is its upper leaves, which are joined at the base, forming a cup around the square stem that can hold water. This plant belongs to the Silphium genus, commonly known as rosinweed. While other plants share the "cup" in their name, such as cupflower and cupseed, the cup plant is specifically recognized for its unique stem-encircling leaf structure.1234
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