Odd phal blooms- missing lips, strange petals

[kalanchoe]

Hello All,

I have two phals that have both put out an odd flower- each had two sepals, two petals, and a lone column with no lip. Is this common? Is it the result of particular growing conditions? In both cases, the buds of said blooms were on the plants when purchased, and then bloomed in my home.





Additionally, the green phal put out another bloom that was fairly normal, except one of the petals seemed to mirror the lip pattern:



While I have a background in science, I'm an orchid beginner and I don't know anything about botany. I'm curious about these oddities, so I appreciate any insight you might have!