Fall ephemerals?

Spring ephemerals, such as ramps, are well known to me.  Plants that take advantage of the spring sun that reaches the ground before the deciduous trees leaf out and store this energy in their bulbs are a wonderful addition to a forest garden.  This morning I was wondering, are there fall ephemerals?  Plants that wait for trees to drop their leaves and then push out growth?  The first thing that comes to mind is fall flowering crocuses like saffron.  I grow my saffron in a sunny bed, but maybe I need to move them into my forest garden?  Would they do well under all the leaves that drop?  Other ideas?  

Right now my world is covered in a blanket of snow or I'd be wandering the forest looking to see who is up to what!  Is fall ephemerals a thing?  If so, what edibles and medicinals might fall into that group?

You are in a lot different climate than me, but the first thing that comes to mind is alliums.  I plant garlic and onions in the fall for late spring harvest.  It is only a few days before they begin to sprout, and I also inevitably find other garlic and onions sprouting around previously planted beds that had somehow escaped harvest.  This is not true for the chives, both common and garlic, though, that I have in my garden.

And maybe not really what you had in mind but annuals that are better in cool weather also begin sprouting in the fall in my garden.  I always get cilantro, mustard, lettuce and borage volunteers in the fall, sometimes other things depending on what has gone to seed.  Last year there was a very productive spinach volunteer that showed up mid fall and powered through the winter.  Though it may be the temps, there may also be a light aspect to it as well. I know cilantro is day length sensitive, so maybe the seeds have this trait. These volunteers will usually grow a bit into December then just hang around until early February before taking off.