一切經音義 15.460

15.460

合棔（呼昆反樹名也其樹至暮其葉自然兩兩相合明旦方開晝開夜合故名合昏也）。

合棔 (Héhūn, albizia / silk tree: [the second character has the] fanqie Hu-kun [hūn]. The name of a tree. When evening comes, its leaves naturally fold together two by two, and only open on the following morning. Because it opens by day and closes at night, it is named hehun ['combining at dusk']).