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Mammillaria vetula and mammillaria elongata: 2 terribly common plants with lots of variations and seeds are widely available. But where can one find seeds for these 2 species with field collection data? I imagine these must be pretty uncommon...
Thanks in advance!
Ps: i'm refferring to mammillaria vetula ssp vetula

Aymeric De Barmon has Mammillaria elongata under numbers, which you can look up on Ralph Martin's numbers page.

http://adblps-graines-cactus.com/Graine ... -01-01.pdf

http://www.fieldnos.bcss.org.uk/fieldno.html

You may find the others at one of the dealers lists on Cactus Mall:

http://www.cactus-mall.com/seeds.html

Thanks Dave! I had skimmed the adbpls list earlier and i guess i didn't notice it. I'll check further