Posted by: bunyip
Roy Rogers sang in Tumbling Tumblweed of 'see them tumbling down...' which meant that back in the old days of black and white television there were more than one.
Is it an endangered species, or is it like the phoenix and arises from its own ashes/roadkill/whatever. Maybe it is an entity like the electron - always has the same values when observed.
A new category: quantum vegetation.