Japanese tungoil tree; Vernicia cordata
A deciduous tree native to Japan, cultivated for its seeds which yield tung oil. The name is usually written in katakana.
Tung oil is obtained from the seeds of the Japanese tungoil tree.
Katakana spelling is common for this plant name; usually written in kana.
Kanji spelling is attested but rare; the katakana form is preferred in practice.
Compound of 油 (abura, 'oil') and 桐 (kiri, 'paulownia'), referring to the oil-rich seeds and the resemblance of its leaves to those of the paulownia tree.