I mentioned in another thread that I planted a lettuce mix - the seeds included all lettuce varieties the company grew last year. I counted on their website - this could be up to 27 different varieties. I wrote them down, then looked at pictures of each variety on various Websites. So far, I'd guess that I have about 8 or 9 different types, with my latest planting too small to tell. I took pictures today to see if I could actually pair them with one of the Web images and therefore a name.
This looks like a young Red Sails, Forellenschluss, or maybe Amish speckled. Red Sails, fully grown, is much redder on the edges and very, very frilly, but I couple images of young plants (on other websites) appeared to look much like the other speckled varieties. As it matures, I'll probably be able to pinpoint it.
This lovely bright lime colored looseleaf is probably Salad Bowl.
Others that seem sure are Bronze Arrowhead, Buttercrunch, and Little Gem.
But, the one below, has what looks to be flower buds! The leaves are definitely not a butterhead texture, nor a looseleaf I wouldn't think. They are a bit coarse, heavy, thick, with a heavy strong rib. At this age, most lettuces are very tender....this doesn't appear tender in the least. It could be a romaine, I suppose, but it's not really forming a head in the middle, as a couple other potential romaines are. There are three of these, all with what appear to be flower buds.
I did move some seedlings around and planting some other seeds without noting what I'd done but this doesn't appear to be anything else I've purchased either (note: always be careful when planting seeds Write down every thing you do, every move you make, every seed you plant. It's easy to think, Oh, I'll remember that I moved X from here and planted K, Q and B in its place....not).
Anyone have a clue what this might be? You can actually see what looks to me like buds in the center of the plant.

I've read that lettuce can also bolt from stress. So, I suppose it's possible that this was induced by some poor care on my part...though I'm at a loss to identify what it could have been. Later today I'll break off a leaf and taste it to see if it's too bitter. If it's not, I guess I should eat it pronto so it doesn't get that way.