Sonic Hedgehog to the Rescue! That's what I originally thought of when I saw the name. Then I figured it was probably an assembly of last names like, "Merril-Lynch-Pierce-Fenner & Smith" or "Crosbey Stills A Nash & Young". Cactus eh? Kind of reminds one of the rattlesnake motiff on "Don't tread on me" banners of the early American Revolution days. I guess for cactus the banner would be "Don't sit on me" <g>