Mammillaria vetula subsp. gracilis (Thimble Cactus)
Mammillaria vetulasubsp.gracilis(Pfeiff . ) D. R. Hunt Thimble Cactus , Thimble Mammillaria Cactus gracilis , Escobariopsis gracilis , Krainzia gracilis , Mammillaria gracilis Family : CactaceaeSubfamily : CactoideaeTribe : CacteaeSubtribe : CactinaeGenus : Mammillaria Mammillaria vetulasubsp.gracilisis native toMexico(Hidalgo , Queretaro ) . Mammillaria vetulasubsp.gracilis , also known asMammillaria gracilis , is a smallcactuswith cylindric , bright green stems densely cover with snowy spines . It set off freely and organize declamatory clumps over time ....