This Green Goddess Arum Lily (Zantedeschia aethiopica) was my subject to paint for an online zoom workshop with Isabelita van Zyl. 
https://paintingplants.com/course/arum-lily/

Zantedeschia aethiopica ’Green Goddess’
Family: Araceae (Arum family)
Common name: Arum Lily
Native to: Southern Africa
Bulb, Groundcover, Perennial
An attractive, large-leafed perennial.

Green Goddess Arum Lily reference photo credit © Issy Van Zyl