What is "koelreuteria"

Koelreuteria is a genus of three species of flowering plants in the family Sapindaceae, native to southern and eastern Asia.

They are medium-sized deciduous trees growing to tall, with spirally arranged pinnate or bipinnate leaves. The flowers are small and yellow, produced in large branched panicles long. The fruit is a three-lobed inflated papery capsule 3–6 cm long, containing several hard nut-like seeds 5–10 mm diameter.

The genus was named after Joseph Gottlieb Kölreuter, from Karlsruhe, Germany, by Erich Laxmann.