I literally stumbled across a lone speciman if this species, almost stepping right on it, and have not seen another. One of the many tiny 1"/2.54 cm wildflowers hiding in the wood, the common name comes from the appearance of its "fruit" which resembles a thimble.
The species was used by Native Americans as an antidiarrheal, an aid for whooping cough, a stimulant, an emetic, a remedy for tuberculosis, and as a protection against witchcraft. Suffering from all these afflictions, I wish I had found more. However, its additional use as a love potion would have been better served long ago...tho I can certainly think of applications that might be utilized currently.
The smoke from roasting its seeds was also used to revive the unconscious. And though some (perhaps many) would accuse me of existing in such a state, it would seem difficult indeed to administer such remedy to one's self.
[Taken after a rain, the large version shows the raindrops on the cottony petals a bit better]