Zantedeschia pentlandii (R.Whyte ex W.Watson) Wittm., Gartenflora 47: 593 (1898) (syn: Calla pentlandii (R.Whyte ex W.Watson) Anon. ; Richardia pentlandii R.Whyte ex W.Watson; Richardia sprengeri Comes ; Zantedeschia sprengeri (Comes) Burtt Davy );
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Northern Prov. (Mpumalanga) as per POWO;
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Zantedeschia pentlandii ‘Best Gold’ from California-GS04092025-1: 3 high res. images.
Zantedeschia pentlandii ‘Best Gold’ cultivar with medium sized dark yellow spathe, yellow spadix and purple spot at base, clicked from Fremont, California in 2023.
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References:
POWO
https://www.inaturalist.org/taxa/596426-Zantedeschia-pentlandii
https://plants.ces.ncsu.edu/plants/zantedeschia-pentlandii/