P / pŏtērĭon
noun

pŏtērĭon

gen. ii · gender neuter · decl. 2nd
= ποτήριον
a plant; also called; tragacanth
a plant, also called phrynion, perh. tragacanth, Plin. 25, 10, 76, § 123; 27, 12, 97, § 122.