Laburnum Laburnum Laburnum, sometimes called golden chain or golden rain, is a genus of two species of small trees in the subfamily Faboideae of the pea family Fabaceae. The species are "Laburnum anagyroides"—common laburnum and "Laburnum alpinum"—alpine laburnum. They are native to the mountains of southern Europe from France to the Balkans. Some botanists include a third species, "Laburnum caramanicum", but this native of southeast Europe and Anatolia is usually treated in a distinct genus "Podocytisus", more closely allied to the "Genisteae" (brooms). The "Laburnum" trees are deciduous. The leaves are trifoliate, somewhat like a clover; the leaflets are typically long
Tree swallow as "Hirundo bicolor" by Louis Pierre Vieillot in his "Histoire naturelle des oiseaux de l'Amérique Septentrionale", published in 1807. The genus it is currently placed in, "Tachycineta", was established by Jean Cabanis in 1850. This swallow is sometimes placed in the genus "Iridoprocne", along with the mangrove swallow, white-rumped swallow, white-winged swallow, and Chilean swallow. The placement was first made by Elliott Coues, on the basis of its plumage. The tree swallow is also called the white-bellied swallow, for its white underparts. The generally accepted genus name is from Ancient Greek "takhykinetos", "moving quickly", and the specific "bicolor" is Latin