Mammillaria polythele 'Nuda' is a horticultural cultivar of Mammillaria polythele that is spineless or relatively spineless. It is sometimes encountered as Mammillaria polythele 'Stachellos' or Mammillaria polythele f nuda, less commonly as Mammillaria polythele 'Inermis'. It is a stout cylindrical cactus growing to about 40cm, sometimes more and sometimes sprawling over as it achieves a venerable old age. This cultivar - as the name suggest is - characterised by its long naked tubercles which lack the spines of the type species.
Throughout the summer Mammillaria polythele 'Nuda' produces many deep magenta flowers around the circumference of its woolly apex, putting on a grand show over many months. It will benefit from being placed outdoors during the summer months and then brought inside again in late September or early October when all watering should stop until March. It is hardy to about -5C but cannot be considered an outdoor cactus in the cold wet UK winters.
Additional Information
| Order | Caryophyllales |
|---|---|
| Family | Cactaceae |
| Sub-Family | Cactoideae |
| Synonyms | Cactus affinis, Cactus crocidatus, Cactus dolichocentrus, Cactus hexasanthus, Cactus niger, Cactus nudus, Cactus obconella, Cactus oothele, Cactus ovimamma, Cactus polythele, Cactus quadrispinus, Cactus rhodeocentrus, Cactus rosea, Cactus setosus, Cactus tetracanthus, Cactus webbianus, Mammillaria affinis, Mammillaria catafracta, Mammillaria cataphracta, Mammillaria columnaris, Mammillaria crocidata, Mammillaria dolichacantha, Mammillaria dolichocentra, Mammillaria dolichocentra var. galeottii, Mammillaria durispina, Mammillaria echinops, Mammillaria galeottii, Mammillaria hexacantha, Mammillaria hexaedra, Mammillaria hidalgensis, Mammillaria hoffmannseggii, Mammillaria ingens, Mammillaria kelleriana, Mammillaria kewensis, Mammillaria kewensis var. craigiana, Mammillaria longispina, Mammillaria loricata, Mammillaria multimamma, Mammillaria neophaeacantha, Mammillaria nigra, Mammillaria nuda, Mammillaria obconella, Mammillaria obconella var. galeottii, Mammillaria obscura, Mammillaria oothele, Mammillaria ovimamma, Mammillaria ovimamma var. brevispina, Mammillaria ovimamma var. oothele, Mammillaria polythele var. affinis, Mammillaria polythele var. columnaris, Mammillaria polythele subsp. durispina, Mammillaria polythele var. hexacantha, Mammillaria polythele var. latimamma, Mammillaria polythele subsp. obconella, Mammillaria polythele var. quadrispina, Mammillaria polythele f. quadrispina, Mammillaria polythele var. setosa, Mammillaria polytricha var. hexacantha, Mammillaria quadrispina, Mammillaria rhodeocentra, Mammillaria rhodeocentra var. gracillima, Mammillaria rhodocentra var. gracilispina, Mammillaria rigidispina, Mammillaria rosea, Mammillaria setosa, Mammillaria spectabilis, Mammillaria subdurispina, Mammillaria tetracantha, Mammillaria tetracentra, Mammillaria webbiana, Mammillaria webbiana var. longispina, Mammillaria xochipilli, Neomammillaria crocidata, Neomammillaria dolichocentra, Neomammillaria durispina, Neomammillaria echinops, Neomammillaria galeottii, Neomammillaria hidalgensis, Neomammillaria hoffmanniana, Neomammillaria kewensis, Neomammillaria obconella, Neomammillaria polythele, Neomammillaria subdurispina, Neomammillaria tetracantha, |
| Geographical Origin | Horticultural cultivar. Type species is from Mexico: Hidalgo, Querétaro, and Guanajuato |
| Cultivation | Full sun or semi shade. Well-drained gritty substrate. Water sparingly through the growing season. Feed with liquid cactus feed every two weeks between May and July. Keep completely dry in winter, from October to March. An ideal houseplant |
| Eventual Height | 40cm |
| Eventual Spread | 10cm |
| Hardiness | Cold tolerant, it will take a few degrees of sub-zero temperatures if kept dry in a cool glasshouse but outdoors is not fully frost hardy in most cold wet UK locations. Best as a houseplant |
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