Sycamine
The sycamine tree appears once in scripture, named by Jesus in a saying about the proportion between faith and what faith can ask.
The Saying on Faith
When the disciples ask the Lord to increase their faith, his answer turns the question on its head with an image drawn from a single tree: "And the Lord said, If you⁺ had faith as a grain of mustard seed, you⁺ would say to this sycamine tree, Be rooted up, and be planted in the sea; and it would obey you⁺" (Lu 17:6). The saying pairs the smallest visible seed with one of the larger trees the disciples would have known, and it presses the point that what is required is not a great quantity of faith but the presence of any at all.