A small leguminous tree (
Cytisus Laburnum), native of the Alps. The plant is reputed to be poisonous, esp. the bark and seeds. It has handsome racemes of yellow blossoms. [
1913 Webster]
" Scotch laburnum (Cytisus alpinus) is similar, but has smooth leaves; purple laburnum is Cytisus purpureus."
[1913 Webster]