Black Locust Tree

Names
Robinia pseudoacacia, Black Locust, False acacia, Locust tree
Description
Tree or shrub with alternate leaflets with two spines at the base of each leaf. Flowers are fragrant, white / cream and droop. Pods are brown with seeds inside.

Concern Level
Only during drought conditions, unpalatable.
Toxic Parts
All parts of tree except flowers, bark is most toxic.

Image from wlcutler
Symptoms
Colic, diarrhea, staggering, loss of appetite, weak pulse, paralysis.
Danger
Death is rare, but recovery time is slow.

Image from velostricken