Arum palaestinum (Black Calla, Black Calla Lily, Solomon's Lily, Wild Arum, Wild Calla) | North Carolina Extension Gardener Plant Toolbox
Arum hygrophilum Boiss. | Plants of the World Online | Kew Science
Arum italicum (Cuckoo's Pint, Italian Arum, Italian Lily, Italian Lords and Ladies, Orange Candle Flower) | North Carolina Extension Gardener Plant Toolbox