There are two here that I don't have labels for.
Perhaps both are androsace? The one holds its
stark white flowers up high. I'll post a close up
of the main plant next. The other has a bit dirtier
white bloom held much closer to the plant. I got
both of these at a chapter plant sale.
Tammy, I'm jealous you have so much in bloom! Sorry we (Leftwood, altagardener and I) have not been around much...we have been busy on the NARGS forum..I think we have forgotten about DG!
In regards to your unknowns...the little white one is an annual androsace...related to salicifolia and chauxii..I have the same one as you but got it as A. lactea. It self-seeds in the rockery. The Dodecatheon is indeed an alba media. Your Erythronium is called Pagoda...it is a toulumnese hybrid.
Most of what I have blooming currently are spring bulbs...I won't bore you with crocus, muscari, chionodoxa and the like.
In true alpines I have Aethionema oppositifolia open.
I like to see the early and late bloomers.
I obtained seeds from NARGS swap and have them started as winter sowing,but nothing has sprouted yet. We are having a warmer week coming up so perhaps that will
bring them along. Did you make your own troughs?
I made two troughs and bought the rest. My chapter of NARGS
has a few members who make them for our plant sale. Plus a
talented trough maker in NY state has donated some for our
Phila Flower Show display and I bought some of those.
Here's some photo's of my troughs - from a week or so ago.
(This is a cement "trough" I bought from a local pot place).
I'm sure you'll like Alyssum stribrnyi a lot - it covers itself in flowers in summer. Hmm, that's one of those names I've always wondered how to pronounce... It certainly is economical with respect to vowels, isn't it? ;-)
Saxifraga sancta var. macedonica - this one in a back yard trough is finally blooming. One in a trough in our south-facing front yard was in bloom some time ago, but is so rabbit-munched that I hesitate to show it! (Darn rabbits have suddenly gotten rather exotic in their tastes, the last couple of years!)
Oh, and I almost forgot to mention it... very nice troughs, Tammy!
Erythronium dens-canis - I have two little clumps of it that took forever to start to bloom. It was a minor tragedy this year when 2 buds got knocked off the other plant (starting from only 6 total)... acckk!