https://www.desertusa.com/flowers/Blue- ... nweed.html are all the same. They are all a variety of Phacelia. However, I from two sources it's all about the leaf: Scorpionweed split, Helio is not split. I did notice in the description though that there are height differences between the types. And I guess I should have tried: "Emits onionlike (rancid drift [copyright: joe bartels]) odor when foliage is crushed or stem is broken." and also, I don't see any curl. To me, this looks more like what I would think is Phacelia distans. One of the other topics I will study during retirement.