Laburnum in "L. anagyroides" and long in "L. alpinum". They have yellow pea-flowers in pendulous leafless racemes long in spring, which makes them very popular garden trees. In "L. anagyroides", the racemes are long, with densely packed flowers; in "L. alpinum" the racemes are long, but with the flowers sparsely along the raceme. The fruit develops as a pod and is extremely poisonous. The yellow flowers are responsible for the old poetic name 'golden chain tree' (also spelled golden chaintree or goldenchain tree). All parts of the plant are poisonous, although mortality is very rare. Symptoms of laburnum poisoning may include
Laburnum Avenue an at-grade crossing of Norfolk Southern Railway's Richmond District rail line and intersects SR 33 (Nine Mile Road) west of Highland Springs and east of the historic home Beth Elon. The highway heads north, intersecting Creighton Road, then curves west and intersects US 360 (Mechanicsville Turnpike) within East Highland Park. Laburnum Avenue crosses over CSX's Piedmont Subdivision and passes along the southern edge of Richmond International Raceway between Carolina Avenue and Richmond Henrico Turnpike. Laburnum Avenue continues west into the city of Richmond. The four-lane boulevard intersects US 1 and US 301 (Chamberlayne Avenue) within the Ginter Park Historic District.