Today is the first time I've noticed these little red rice bulbs forming the crown of an ephemeral Dutchman's breeches (Dicentra cucullaria), now going dormant. I found a great description of rice bulbs (and a trove of other arcane garden info) at the Scottish Rock Garden Club's website. It seems rice bulbs are somewhat common among Fritillaria, but unique in this genus. ...Such rare and wonderful info would have been nearly impossible to find pre-internet — what a great era to live in and be an inquisitive gardener!
Red "rice bulbs" of D. cucullaria