Stems with large, deep lobes. Flowers fragrant lasting at least 2 days, the perianth segments yellow suffused red on the outside. Fruit green.

S Mexico

 

E. chrysocardium Alexander from Mexico has deeply cut stems to 1 m or more long. Flowers purplish towards the tip, white inside.

Source: Thompson, A, ; Forbes, S.; Spencer, R. (1997). Cactaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.