Species Profiles Semester Cumulative Quiz View

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royal paulownia (Paulownia tomentosa)
Family: Scrophulariaceae

 

A table detailing the characteristics of the royal paulownia

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Form:

Medium-sized tree reaching 50 ft. tall and 2 ft. dbh. It has a rounded crown with heavy branches.

Form for royal paulownia

Leaves:
 Arrangement: opposite; pinnate-netted

 Shape: cordate to oval with an acuminate tip

 Margin: entire with ciliate margin

 Texture: thick, velvety pubescence

 Variation: pinnate

Leaves for a royal paulownia

Bark:

Smooth and dotted with lenticels when young, becoming gray and furrowed with alternating smooth patches with age.

Bark for a royal paulownia

Twigs and Buds:

Pubescent, light brown and stout with lenticels, closed bundle scars and elliptical leaf scars, bud scales absent on terminal buds.

Twig and buds for a royal paulownia

Flowers and Fruit:

Fruit is a yellowish capsule & remains over winter

Fruit of a royal paulownia

Distinguishing Characteristics:

Heart-shaped, large leaves (note penny on seedling leaf in image at right), very sticky seeds, pinkish purple flowers.

Distinguishing characteristics of a royal paulownia

Range:

Native to China and planted in US as an ornamental tree

Silvics:

Intolerant; moist slopes and stream banks

Ecological and Cultural Importance:

Invasive species along roadsides, waterways, and pastures. However, the wood can is quite valuable.