Buttercup  A turban squash so named because of its turban like cap at the blossom end.  The shape of the Buttercup is somewhat drum-like, with sides tapering the apex and a protuberant turban 2 to 3 inches in diameter.  The squash is harvested at 4 to 5 inches in length and 6 to 8 inches in diameter, with a skin that is dark ivy green to dull blackish green spotted grayish markings  and faintly striped with dull gray.  The turban on the squash is light gray or blue gray.  The flesh is orange, dry and sweet, and of fine texture with a small seed cavity and surrounded by a smooth hard shell.