<name of person> willowherb 3 realizations
NEW Realization 1
type Motivation
language Estonian
lexeme 1 Jaan
lexeme 2 jaanilill
meaning 1 Ivan
direction
meaning 2 willowherb
reference Brodskij 2018: 16-17
comment
NEW Realization 2
type Derivation
language Russian
lexeme 1 Иван + чай
lexeme 2 иван-чай
meaning 1 Ivan
direction
meaning 2 willowherb
reference <personally collected data>
comment
NEW Realization 3
type Derivation
language Ukrainian
lexeme 1 iван + чай
lexeme 2 iван
meaning 1 Ivan + tea
direction
meaning 2 willowherb
reference <personally collected data>
comment

Also іванко́, іва́нова трава́, іван-трава

Словник українських наукових і народних назв судинних рослин / Ю. Кобів. — Київ : Наукова думка, 2004 https://r2u.org.ua/s?w=Epilobium+angustifolium&scope=all&dicts=14