Basic description is: 13 ribs, broader at the base, fairly acute at the top, with areoles in notches and very slight horizontal indents. Spines 8-9, curved, possibly one central. Newer spines are brownish, turning yellow with age, although maintaining dark tips. The color is much more noticeable when the plant is wet, otherwise the spines are a pinkish grey. The cephalium is very wooly, with the wool being very white (although I guess that could be because it is a fairly young cephalium) and the red bristles do not poke out of the wool by very much. The flowers are very deep pink, and stand out from the cephalium for a noticeable amount. I have not yet seen any fruit, so I can't speak to that.
I tried to narrow the choices down to a small handful: M. glaucescens; M. smithii; M. violaceus; or M. zehntneri. None seemed a perfect match, although M. glaucescens seemed close.
Any help/guidance you can offer would be greatly appreciated.
