Pictures of Plants Toxic to Horses

Here we are in the midst of the warm/hot summer season.  In North Carolina, the growing environment is wonderful for some plants - warm night and day, and moist.  Many of these plants, if properly chosen and nurtured by needed fertilizer  will become healthy and hardy pasture.  To my dismay, a good horse pasture does not happen by itself and does not happen overnight.  It is like the soup simmering on the stove, it must be watched, tweaked, stirred, and finally you just wait till it's done.
In a pasture for horses, no matter what you've planted, there are some weeds that will manifest themselves as if by spontaneous generation.  The good news is that horses are very meticulous eaters.  Given the opportunity to choose, they will usually eat the grass that is good for them (example of bad news is that they will preferentially exfoliate the red maple branch that fell in the last storm.  Red Maple leaves in sufficient quantities will kill them).
Following is a link to a color listing of plants toxic to horses.  Be aware that different parts of the plants are toxic.  Sometimes the fruit of the plant is fine but the leaves are toxic.  Sometimes the other way around.  Sometimes the bark is toxic or the fallen leaves under the trees.  This subject will keep you humble inasmuch as the variations tax anyone's memory.  Go with God.