Mammillaria glassii R.A.Foster

Freely clustering, body globular, to 3 cm wide without milky sap. Tubercles obscure. Axils with 20-30 fine bristles. Central spine solitary with sub-central spines 6-8, 4-5 mm long, amber. Radial spines 50-60, 10-15 mm long, whitish, hair-like. Flowers pale pink, 14 mm long, 3-5 mm wide. Fruit purplish.


var. ascensionis (Repp.) Glass & R.A. Foster.  Flowers 18-22 mm wide.

var. nominis-dulcis A.B. Lau.  Body to 5 cm wide. Flowers 18 mm wide.

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.