gonna go out on a limb here and say it's phototroping. if the plant's not rotated often enough, the sides of the leaves closest to the light will grow faster.
maybe.
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"Apart from the utility of binomials for standardizing reference for effective communication,
Laelia Speciosa is a tad easier to pronounce and spell than its Atzec name
chichiltictepetzacuxochitl."
--Alec Pridgeon