Our garden has many mystery plants that have blown in over the years. I posted a picture of this one on twitter and my friends identified it as Allium triquetrum, a.k.a. three-cornered garlic. Apparently it is a big pest weed in Australia, though it looks nice in the garden.
The pollen grains are smaller and more rice-shaped than the daffodil pollen. I think my little forensic scientist could tell the difference if she found some during a case. Here they are, also at 10x magnification in transmitted and reflected light.
