A handful of dog's teeth. By which I mean Dog's Tooth Violet- the common name of species from the Erythronium genus. The tubers do bear a resemblance to the tooth of a canine and the European species is Erythronium dens-canis. The above are an American cultivar 'Pagoda' said to be a cross between E. tuolumnense and E. californicum 'White Beauty'.
 Autumn is the time to plant spring flowering bulbs which is an exercise in visualising how an area might look in six months time. I already have a number of Pagodas in the garden:

 Trout Lily seems to be the more usual common name in the States. I remember seeing a mountain meadow dotted with hundreds of Erythronium not far from Crater Lake in Oregon. They were daintier than 'Pagoda' but I'm not sure which species (possibly E. grandiflorum?). Dainty but tough; only a few weeks earlier the meadow would have been under deep snow...