Jonah
Jonah 4:6BSB·traditional attribution

So the LORD God appointed a vine, and it grew up to provide shade over Jonah’s head to ease his discomfort, and Jonah was greatly pleased with the plant.

John Calvin Reformed @genevareformer

Before I proceed to treat on the contents of these verses, I will say a few things on the word קיקיון, kikiun; for there were formerly some disputes respecting this word. Some render it, a gourd; (eucurbitam) others think it to have been a cucumber. Free conjectures are commonly made respecting obscure and unknown things.

John Gill Reformed Baptist @doctorgill

And the Lord God prepared a gourd,.... So the Septuagint render the word; but some say that a worm will not touch that; Jerom renders it an ivy; but neither the gourd nor that rise upwards without some props to support them.

Jamieson-Fausset-Brown Reformed @jfbcommentary

gourd--Hebrew, kikaion; the Egyptian kiki, the "ricinus" or castor-oil plant, commonly called "palm-christ" (palma-christi). It grows from eight to ten feet high. Only one leaf grows on a branch, but that leaf being often more than a foot large, the collective leaves give good shelter from the heat. It grows rapidly, and fades as suddenly when injured.