Could be a fungus like Vladimir said, could also be an insect egg or just dirt on a bit of fluff. However, I'm more concerned with how dusty the leaves are. I may just be dust or it could be the beginnings of a spider mite infestation. It's a good idea to wash off the leaves from time to time, like maybe every 4-6 weeks. Take them outside and hose them off, or if that's not possible, put them in the shower and shower them off with cool water. Then let them drain well and put them back where they were. It helps prevent spider mites as they're attracted to dusty plants. And your plants love the rinsing off!

Thanks bpathome! I too would like to be able to see out during the day, which is why the cafe curtain idea bothers me, that and the fact that to make the cafe's useful, they will have to be tall enough - about half-way up the window, I think, and that puts the rod area in between panes. I'm wondering just how crummy that might look indoors AND from outside. The good thing would be seeing out the top of the window without any obstruction...oh dear.....I'm still hoping people will post pictures.

I don't have a pic but I love my pullout pantry. 2 rollouts are attached to the door, so they come out when it is pulled open. The other 2 are accessible on rollouts, but only need to be pulled out to get near the back. It is 30" wide and so I can fit a ton in it. I stand to whichever side I expect to find what I am searching for and it is one motion to open it. It sure beats having my pantry stuff in the basement! I also did cubbies on the back part of my island, which I tuck my toaster, food processor, spices, etc.. in. It extends the counter space and hides the chaos from the other side. We designed it by accident because I had gotten the idea from Ikea to face shallow wall cabs on the back side of the island rather than putting a cover panel. When I was playing with their online planner is turned one of the cabs around and I saw the potential for facing 2 of them towards the cook. The 3rd one hides the back of our tall vintage stove. My only regret is I realized after that I could have skipped those actual 2 cabs and just had the counter that covers their top and sides form the cubbies. It would have given me an extra inch or so and made my spaces taller. I thought an 18" cab would be enough but the interior space is less than 18".... This is how they looked with the planner. You have to picture my counters going up to them, flush. My KA stand mixer is too tall for in there and I did not go for the spice carousels as planned in this pic. You can see how they extend my usable counter by keeping more stuff off of them. The middle top cab and the lower 3 cabs face away from the kitchen. I have put a lot of can goods back there and the one closest to the kitchen table has dh's extensive condiment collection. I am so glad that got moved out of the kitchen storage area :)

Sorry it's not a great picture, but is this what you mean? I guess mine is two but looks like 3. It matches the doors on the pantry side. Why would yours not match? Good luck!