The exposed seed is on the lower right; the others are unopened seed pods. Moringa oleifera is also known as the "Miracle Tree" because it is very heat- and drought-tolerant, yet is a good source of nutritious edible seeds. They are not entirely tolerant of frost, but are said to grow back from the (very deep) tap root if the freeze kills them.
We are hopeful that the roots can stabilize arroyo banks.
These seeds came from Eden Organic Nursery Services, http://www.eonseed.com/
Sharon Astyk mentioned the moringa tree in "Gardening in a Changing Climate." She thinks that more people should grow them.