Between 6-17 species, including:
Paulownia catalpifolia
Paulownia elongata
Paulownia fargesii
Paulownia fortunei
Paulownia kawakamii
Paulownia taiwaniana
Paulownia tomentosa

Paulownia is a genus of between 6-17 species (depending on taxonomic authority) of plants in the monogeneric family Paulowniaceae, related to and sometimes included in the Scrophulariaceae. They are native to much of China, south to northern Laos and Vietnam, and long cultivated elsewhere in eastern Asia, notably in Japan and Korea. They are deciduous trees 10-25 m tall, with large leaves 15-40 cm across, arranged in opposite pairs on the stem. The flowers are produced in early spring on panicles 10-30 cm long, with a tubular purple corolla resembling a foxglove flower. The fruit is a dry capsule, containing thousands of minute seeds.

The genus was named in honour of Princess Anna Pavlovna of Russia (1795-1865), daughter of Tsar Paul I of Russia.

Paulownia fortunei is a fast-growing tree that is grown commercially for the production of hardwood timber.

Paulownia tomentosa is listed as an invasive species in the southeastern United States, having been introduced there as an ornamental tree for its decorative flowers.

Uses

Paulownia timber is a pale whitish coloured wood with a straight grain. Its characteristics of rot resistance and a very high ignition point ensures the timber's popularity in the world market. Paulownia grown on plantations generally has widely spaced growth rings and is therefore much less valuable.

Testing by CSIRO has shown that Paulownia wood is very attractive for wood-boring insects.

External links

• Flora of China - Paulownia