MOONWORT
moonwort, common moonwort, Botrychium lunaria
(noun) of America and Eurasia and Australia
Source: WordNet® 3.1
Etymology
Noun
moonwort (plural moonworts)
A small fern, Botrychium lunaria (lesser moonwort); later, any member of the genus. [from 15th c.]
(now US, UK regional) Lunaria annua (greater moonwort); also known as Honesty and Actual Honesty. [from 16th c.]
Source: Wiktionary
Moon"wort`, n. (Bot.)
(a) The herb lunary or honesty. See Honesty.
(b) Any fern of the genus Botrychium, esp. B. Lunaria; -- so named
from the crescent-shaped segments of its frond.
Source: Webster’s Unabridged Dictionary 1913 Edition