Mammillarias.net

Mammillaria crucigera var grandinosa

First description by Linzen, Rogozinski et F.Wolf, Mitteillungsblatt des AfM 21(4): 207 ? 209 1997.

Body: Solitary at first, later clumping, globose to short-cylindrical, somewhat sunken apically, 15 ? 50 mm in diameter and to 100 mm high.

Roots:

Sap: With latex.

Tubercule arrangement:

Tubercule: Conical.

Axil: With white wool.

Radial spine: 18 ? 31, needle-like, comb-shaped, horizontal radiating, 1,5 ? 2,5 mm long, glassy white to white with brownish base.

Central spine: Mostly absent, sometimes 2, rudimentary, needle-like, 2 ? 6 mm long, brown to dark brown.

Flower: Short funnelform, carmine to pink, 9 ? 10 mm in diameter and 10 ? 12 mm long.

Fruit: Stick-shaped, red, 8 ? 12 mm long and 2 ? 3 mm wide.

Seed: Club-shaped, pale brown, 0,9 mm long and 0,6 mm wide.

Flowering period in Cultivation (Europe):

Minimum temperature: 5 ? 10? C.

Habitat Substrate: A mixture of brick-dust, sand, loam and gravel.

Geographic Distribution:

Comments: Very slow growing species. Not easy flowering. this taxon has not yet been accepted as being a valid sub-species, for the moment, its standing is left in doubt.

Bibliography: Afm-LBS Lieferung 09/99 LINZEN

Synonymes: