Mint

Boyd’s Bible Dictionary:

All aromatic herb, varieties numerous
(Matt. 23:23; Luke 11:42).

Concise Bible Dictionary:

One of the small herbs on which the Pharisees were careful to pay tithes (Matt. 23:23; Luke 11:42). There are several species of mint; the Mentha Sylvestris is common in Syria.
Mentha Sylvestris