I was given a flower that I was told it is a calla lily. It has stalks that are hardy, about 2 1/2 ft. tall with red blossoms, the inside resembles a tiger lily. The blossoms are not shaped like a calla though. There are balls that get on the stems, green and hairy, and dry to a brownish color with a black ball inside, which could be a seed. Is it a lily or some other plant?