This is one of the few Weingartia (Sulcorebutia) species which is commonly found with white flowers, though plants with pink-edged white, pale pink or deep pink flowers also occur.

The plant has dark green, spherical bodies with white spines, up to about golf-ball size, solitary or clustering a bit.

The description is here.

Plants of this species in the collection include:

Weingartia roberto-vasquezii

Weingartia roberto-vasquezii LH1424

Weingartia roberto-vasquezii LH1741

Weingartia roberto-vasquezii MS396

Weingartia roberto-vasquezii PHA892

Weingartia roberto-vasquezii VZ669

Weingartia roberto-vasquezii VZ671

Weingartia roberto-vasquezii VZ694

Weingartia roberto-vasquezii WK986