Noun calla has 2 senses
- calla lily, calla, arum lily, Zantedeschia aethiopica - South African plant widely cultivated for its showy pure white spathe and yellow spadix
--1 is a kind of flower
--1 is a member of Zantedeschia, genus Zantedeschia
--1 has particulars: pink calla, Zantedeschia rehmanii; golden calla
- Calla, genus Calla - water arum
--2 is a kind of monocot genus, liliopsid genus
--2 is a member of Araceae, family Araceae, arum family
--2 has members: wild calla, water arum, Calla palustris
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