passive voice: the voice used to indicate that the grammatical subject of the verb is the recipient (not the source) of the action denoted by the verb
voice: (linguistics) the grammatical relation (active or passive) of the grammatical subject of a verb to the action that the verb denotes
moehringia: low-growing herbs widely distributed in temperate and Arctic northern hemisphere: sandworts; distinguished from members of the genus Arenaria mainly by having four-petaled rather than five-petaled flowers