Mexican pings that go dormant underground

[YtK]

Hi. I am intrested to know what are all the mexican pings that go dormant underground and in what form??
From what i know :
p.heterophylla wich has almost like a real bulb
P.macrophylla wich has more like winter leafs underground
P.colimensis also has more like leafs underground
P.acuminata

All the best

Yoav