= Mammillaria saetigera Boed. & Tiegel
Mammillarien-Vergleichs-Schluessel 49 1933 Boed.
Accepted Scientific Name: Mammillaria hahniana Werderm.
Monatsschr. Deutsch. Kakteen-Ges. 1: 77 77 1929
Neomammillaria saetigera (Mammillaria saetigera) Photo by: Alexander Arzberger
Origin and Habitat: Native habitat is the districts of Queretraro (Arroyo Seco and Sierra de Jalpan (and not in Jalapa) and (?)San Luis Potosi, Mexico.
Synonyms:
See all synonyms of Mammillaria hahniana
Common Names include:
ENGLISH: Dumpling cactus
Description: Mammillaria saetigeraSN|22358]]SN|34354]] is a short haired type of Mammillaria hahnianaSN|22358]]SN|22358]] from Queretraro. It is a medium green globular species characterized by angled tubercles with white wool and bristles. The axillary hairs are up to 2.5 cm in length, the radial spines varies between 15 to 20. The 2 central spines of M. saetigera vary between 8 and 24 mm long, and are whitish tipped brown.
The flowers are purplish-red with outer perianth segments shortly ciliated and the stigma lobes are pinkish-brown There is no geographic isolation between this form and the others, with much longer white hairs. It is at most a variant of Mammillaria hahnianaSN|34354]]SN|22358]] and not a distinct species or subspecies.
Subspecies, varieties, forms and cultivars of plants belonging to the Mammillaria hahniana group
Mammillaria hahniana Werderm.: has 20-30 radials spines, one central spine (rarely more), and purplish red flowers. Distribution: Queretaro, Guanajuato, and Tamaulipas.- Mammillaria hahniana f. albiflora hort.: has white flowers. Garden origin.
- Mammillaria hahniana subs. bravoae (R.T.Craig) D.R.Hunt: has 28-30 radials, usually 2 central and deep pink flowers. Distribution: Rio Blanco region of Guanajuato.
- Mammillaria hahniana var. giselana W.T.Neale: ha thinner hair less than 15 mm long and has up to 40 radial spines. Distribution: Tarajes, Guanajuato, Mexico.
- Mammillaria hahniana subs. mendeliana (Bravo) D.R.Hunt: has 2-4 central spines with very reduced or no radials, and pale pink flowers. Distribution: Guanajuato and Queretaro.
- Mammillaria hahniana var. werdermanniana F.Schmoll ex R.T.Craig: has axillary hairs up to 25 mm long, angular tubercles, and outer petals shortly ciliated, stigmas pink-brown. Distribution: Guanajuato, Mexico.
- Mammillaria hahniana subs. woodsii (R.T.Craig) D.R.Hunt: has 25-30 radial spines, usually has 2 centrals, and pink flowers. Distribution: Near Hacienda de Tarajeas, Guanajuato.
- Mammillaria saetigera Boed. & Tiegel: has shorter axillary hairs (less than 2.5 cm long), radial spines 15-20, central spines 2. Outer perianth segments shortly ciliated. Stigma lobes pinkish-brown . Distribution: Queretraro (Arroyo Seco and Sierra de Jalpan).
Bibliography: Major references and further lectures
1) Léia Scheinvar “Flora cactológica del estado de Querétaro: diversidad y riqueza” Fondo de Cultura Económica, 2004
2) "The Spine", Volumes 20-23, 1971
3) Charles H. Potter “Greenhouse, place of magic” Dutton, 1967
Cultivation and Propagation: It is a rapid growing species that will form large clumps rather rapidly when compared to other Mammillaria species. Needs lots and lots of space to grow. Water regularly in summer, but do not overwater (Rot prone) Use pot with good drainage and a very porous potting media, keep dry in winter. Feed with a high potassium fertilizer in summer. It is quite frost resistant if kept dry, hardy as low as -5
