Mammillaria laui D.R.Hunt

Clustering, body globular, to 5 cm wide. Tubercles obscure. Axils bare or slightly woolly. Central spines 12, intergrading with 35-60 radial spines, 7-10 mm long, whitish or yellowish and bristle-like. Flowers pink.

EC Mexico

Hunt distinguishes forma lauii, forma dasyacantha and forma subducta.

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.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Caryophyllanae
order      Caryophyllales
family       Cactaceae
genus        Mammillaria Haw.