I finally looked up lambsquarters because I kept hearing how wonderfully healthy they are (particularly in Victoria Boutenko's books) and have been anxious to find out if we have them in our yard. I was shocked to learn that (according to this interesting page on weeds) lambsquarters are none other than the "invasive" weed Michael has been pulling out of our garden while remarking on the fact that his grandparents used to call it pigweed. Sounds like it's delicious and very versatile. I'm going to check if we have any outside now but doubt it due to the colder weather. We'll be in great shape next spring when it starts to grow again, along with our red and white currants, gooseberries, blueberries, maybe pears from our young new trees, and whatever other weeds we identify.