What kind of comb is this and how did she get it?

This little girl is mixed breed chick. I got the eggs from a u-pick farm with a chicken free-for-all. I got the eggs because my broody BA was driving me nuts. Look at this comb...is this considered a pea or buttercup? She's only 3 months old so this comb is not done yet. I don't know who the parents are but I think I saw black and red sex links, RIR (or something solid red), BO, brahmas buff and dark, turken, australorp, barred rock and EE(saw the eggs) hens and roos. She's reddish with a white face and black tail feathers a la buff brahma style. Just thought it was interesting and thought I'd share it with the experts.

 

It's single ridge that branches out and into a complete 'cup'. It's not two parallel rows. From what I understand, the buttercup is a form of 'duplex' comb and is related to the v comb. There were no buttercups or la fleche out on the farm. Wonder what's going on with her. She's very cute though with her white face!

 

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Thank you. I have a sneaking suspicion that the dad might have been a little banty roo. I forgot about him. He was hanging around in the coop with the ladies. She's just slightly larger than some silkies the same age. She hatched from a large brown egg though.

I'll post a follow up pic when she's getting close to laying. Should be interesting to see what that comb ends up looking like. I have no idea what I am talking about but I guess it is possible for her to have both single comb and pea comb genes right? Her strange combo exhibits in what looks like a buttercup, which I think is an entirely different gene.