Don't you just love the color combination Mother Nature chose for the blooms of this cactus with that electric green 'lightbulb'? For the naturally curious, each bloom is dainty, just a couple of inches, top to bottom.
DP169-2013 Posted June 18; processed ditto
Winteroceus aureispina cactus blossom
Conservatory at Matthaei Botanical Gardens, Ann Arbor, Michigan
June 13, 2013