Compass Plant
The Compass Plant (Silphium laciniatum) is a species of flowering plant in the Asteraceae family, native to central and eastern North America. Known for its distinctive large, deeply lobed leaves and tall, yellow flower stalks, the Compass Plant is a prominent feature of the prairie ecosystem.
Description[edit | edit source]
The Compass Plant can reach heights of up to 12 feet, making it one of the taller species in its habitat. Its leaves are large, up to 18 inches long, with a rough texture and a unique orientation: they tend to align themselves in a north-south direction, which is believed to minimize sun exposure during the hottest part of the day. This characteristic is the origin of the plant's common name, as it seemingly acts as a compass. The yellow flowers are produced in the summer and are arranged in tall, spike-like clusters.
Habitat and Ecology[edit | edit source]
Silphium laciniatum thrives in full sun and prefers well-drained soil. It is typically found in tallgrass prairies and open fields, where it plays a crucial role in supporting local wildlife. The plant is a vital source of nectar for pollinators, including bees and butterflies, while its seeds are consumed by birds.
Conservation[edit | edit source]
While not currently listed as endangered, the Compass Plant's habitat, the native prairie, is itself under threat due to agricultural expansion and urban development. Conservation efforts are crucial to preserve this species and its ecosystem.
Cultural Significance[edit | edit source]
The Compass Plant has been used by various Native American tribes for medicinal purposes, including treatments for respiratory issues and wounds. Its root system, which can extend several feet underground, has also been utilized to access deep water sources during droughts.
See Also[edit | edit source]
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Contributors: Prab R. Tumpati, MD