CactiGuide.com

The name was verified here in the forum. If used, please say "collection of Nachtkrabb". Thanks.
N.

Hello nachtkrabb
Could you please post closer in photos in good light? I'm not convinced it's mammillaria polythele. This species and its subspecies are characterized by curved upward pointing centrals. Other centrals are stouter too and radial spines are usually absent
Edit: from llifle:
Mammillaria polythele subs. obconella (Scheidw.) D.R.Hunt: has stems up to 15 cm in diameter and 4 unequal spines arranged like a cross c. 2 cm long, ± equal, somewhat recurved, yellowish at first, later grey

Hallo Elie,
if the name has to be corrected, very well, althogh I love that name: It sounds so well and carry no meaning to me.
Hope these pictures help.
The spines are yellowish, at the crown more whitish, at the lower parts mor greyish or brownish. I always say that the plant needs a psychologist: Yellow spines plus pink flowers -- I would grow mad.
N.

Aren't all of them poly theled?

...?

Sorry, I am no native speaker, I don't get it.

Poly = many + Thele = nipple, meaning many tubercles. Latin descriptive names, as with many plant names derived from the Latin or Greek, not English.

A handy dictionary of botanical terms. Plant names often composed by combining two different terms.

https://en.wikipedia.org/wiki/Glossary_ ... ical_terms

Thanks, Dave, now I get it. I knew the meaning of "Mammilaria", so M. polythele is something like a "weißer Schimmel" in German or... what is an analogous picture in English? An "arachnoid spider plant"...?

N.