Occasionally plants show up in our office for identification and no one in the office knows what it is. So it's sent off to others who might know. This was the case of a perennial amaranth, also called goosefoot for some reason. This is Chenopodium californicum, also known as Blitum californicum.
Like other amaranths, it can be upright to 3 feet in height, or if mowed or grazed be more flattened or decumbent. It has a thick, fleshy stem that along with the leaves can be eaten. I guess pigs like it, because it's also called pigweed.
The leaves look sort of lettuce like, which gives it another name—Indian Lettuce.
The stem has also been used for...