Haworthia intermedia Haworthia maculata var. intermedia Haworthia magnifica var. notabilis Haworthia notabilis Haworthia nitidula var. opaca Haworthia intermedia var. notabilis Haworthia mirabilis var. notabilis Haworthia schuldtiana var. erecta
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024