I've been meaning to post the long spines for a while now, was just never happy with the photos as they didn't portray them very well and was unsure as to what I was trying to ID or compare it with and the limitations and mountain of work needed for just a snapshot in taxonomy.
I thought someone else would definitely talk about it, the only thing I vaguely remember is you or trout possibly saying we know the PC had something with a long yellow spine in it's lineage. I need to dig that reference up.
Yes absolutely the long spine shows up at the swollen plant bases, generally around 5-10" from soil level, I call them secondary or tertiary spines. The areoles can also be quite proud/extruded, full and fluffy similar to newer growth hardened peruvianus.
In certain sections, array of spines can exhibit swollen spine base like Super Pedro and what EG was talking about with cuzcoensis in the 'all about girth' thread http://www.shaman-australis.com/forum/index.php?showtopic=41478
All three of the plants in the picture exhibit the long spine to an extent.
I've got other big PC types in slightly different microclimates that I haven't checked yet, their access is getting a little difficult.
Yep am sure they are the same plant. I've a heap of other good stem and flower photos but I can't differentiate what stem is what out of the three plants as i'm trying to stick with 1 plant for the moment to save confusion. Will grab some more shots.