Xerophyte

Flowers

Very large, white, night blooming and remaining open for the following day, fragrant, up to 22 cm in diameter.

Blooming Season

July.

Forma Cristata Aurea

The yellow schizochromic crested form (Echinopsis pachanoi f. cristata aureaSN|8470]]SN|26988]]) has bright yellow crested stems due to the absence (or reduced production) of chlorophyll pigments

Spines

Often wanting, when present few (3 to 7), unequal only few millimetres long, dark yellow to light brown. Spines are located at the nodes which are spaced evenly (approximately 1-2 cm apart) along the ribs.

Ribs

Broad at base, obtuse, rounded, with a deep horizontal depression above the areole.

Stem

Fan-shaped, lemon to golden yellow, forming with time brain-like mounds to 30 cm in diameter and height.

Areoles

Whitish, close set.