A very small stem or a stalk-like structure, essentially another term for caulicle used in botanical description.
From Latin 'cauliculus', a diminutive of 'caulis' (stem), with variant spelling used interchangeably with 'caulicle'. The '-ule' suffix indicates even greater smallness.
In botanical Latin, scientists had three ways to say 'small stem'—cauli, caulicle, and caulicule—showing how they loved precision enough to create multiple words for subtly different sizes.
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