Ptelea

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A detailed article about Ptelea trifoliata, a species of flowering plant in the citrus family.


Ptelea trifoliata[edit | edit source]

Ptelea trifoliata foliage

Ptelea trifoliata, commonly known as the wafer ash or hop tree, is a species of flowering plant in the Rutaceae family. It is native to North America, where it is found in a variety of habitats, including woodlands, thickets, and along streams.

Description[edit | edit source]

Ptelea trifoliata is a deciduous shrub or small tree that typically grows to a height of 6 to 8 meters. The plant is characterized by its trifoliate leaves, which consist of three leaflets. The leaflets are ovate to elliptic in shape, with a smooth margin and a glossy green appearance.

The flowers of Ptelea trifoliata are small and greenish-white, appearing in clusters in late spring to early summer. The fruit is a distinctive, winged samara, which resembles a wafer, hence the common name "wafer ash."

Distribution and Habitat[edit | edit source]

Ptelea trifoliata is widely distributed across the eastern and central United States, extending into parts of Canada and Mexico. It thrives in a range of environments, from dry, rocky soils to moist, rich woodlands. The plant is tolerant of shade and can often be found growing under the canopy of larger trees.

Ecology[edit | edit source]

The hop tree serves as a host plant for the larvae of several butterfly species, including the giant swallowtail (Papilio cresphontes). The flowers attract a variety of pollinators, including bees and butterflies.

Uses[edit | edit source]

Historically, Ptelea trifoliata has been used in traditional medicine by various Native American tribes. The bark and roots were used to treat a variety of ailments, including fevers and digestive issues.

In addition to its medicinal uses, the plant is sometimes cultivated as an ornamental shrub due to its attractive foliage and interesting fruit.

Cultivation[edit | edit source]

Ptelea trifoliata is relatively easy to grow and can be propagated from seed or cuttings. It prefers well-drained soil and can tolerate a range of pH levels. The plant is drought-tolerant once established and requires minimal maintenance.

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Contributors: Prab R. Tumpati, MD