CALLA
Calla, genus Calla
(noun) water arum
Source: WordNet® 3.1
Etymology
Noun
calla (plural callas)
A marsh plant native to cooler areas throughout the northern hemisphere, Calla palustris, having pale green flowers in a white spathe.
The calla lily, Zantedeschia aethiopica.
Source: Wiktionary
Cal"la, n. Etym: [Linnæus derived Calla fr. Gr. calla, calsa, name of
an unknown plant, and Gr. (Bot.)
Definition: A genus of plants, of the order Araceæ.
Note: The common Calla of cultivation is Richardia Africana,
belonging to another genus of the same order. Its large spathe is
pure white, surrounding a fleshy spike, which is covered with minute
apetalous flowers.
Source: Webster’s Unabridged Dictionary 1913 Edition