Mammillaria duoformis ML347
10km West of Huajuapan de León, 2km South-West of Santa María
Oaxaca, Mexico 1700m
Description: Slowly clumping columnar cactus.
Stem: Cylindrical bluish green up to 10 cm tall, 3-4 cm in
diameter. Tubercles without latex, but
latex present in the stem. Axil with bristles.
Radial spine: 18 - 20, slender, needle-like, straight, chalky
white to pale yellow above, orange brown below, 5 - 7 mm long.
Central spine: 4, pinkish tan below, blackish brown above, 8 - 12
mm long (or more), lowermost one red to blackish hooked and longer.
Flower: Bell shaped in apical rings, bright pink to light
carmine, to 15 mm long and 12 mm in diameter.
Fruit: Pale brownish pink.
Cultivation: They are easy
to culture and make interesting specimens for any collection.
It grows by producing offsets and will form
large clumps with time and doesn't require any
special treatment, but some forms can be fast
growers, while others are average in speed. It
needs as much light as possible to keep the stems compact,
but care must be taken to avoid sun scorch. Need a well-drained
soil mix. Water well and then allows to dry thoroughly before watering
again during the growing season. It doesn't like much, if any, winter
water, it can survive short exposures to freezing temperatures (-4° C.) if
properly hardened off and kept dry.
Propagation: Mammillaria duoformis
is best propagated from seed. Seed readily germinates at 20°-22°C, or by
offsets if available.