Xerophyte

Central Spines

4, forming a cross, short, stiff, sharp and erect; they are russet to orangish coloured with darker bases, 17-24 mm long

Seeds

Shiny black, tuberculate.

Note

This member of the Cactaceae family was given this name after the person who collected it in Uruguay, Hugo Schlosser. This plant was for many years known only by its collection number

Flowers

Shiny lemon-yellow, up to 4,5 long and 5 cm in diameter. Pericarpels with green and red scales, brown wool, and dark bristles. Stigma dark red.

Blooming Season

It will usually flower within 3 to 5 years in spring.

Ribs

22 with chinlike protrusions between areoles.

Stem

Green, solitary, club shaped to short cylindrical, up to about 20 cm high and 12 cm in diameter , with red spines and scanty white wool apically.

Radial Spines

About 34, whiter with yellow bases, thinner, straight, needle-like, spreading against the body of the cactus, to 11 mm long.

Fruits

Many seeded, with thick walls, drying and dehiscing at maturity.

Areoles

White, later grey.