Mammillaria duoformis

	*Mammillaria* *duoformis*	CACTUS ART NURSERY Cultivation and Mail Sale of Cacti and Succulents.

Mammillaria duoformis ML347
10km West of Huajuapan de León, 2km South-West of Santa María Xochixtlapilco, OAX-15,
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.
Seed: Brown.

Family: Cactaceae (Cactus Family)

Scientific name: Mammillaria duoformis R. T. Craig & E. Y. Dawson
In: Allan Hancock Foundation Occ. Papers 1-2:59 with plate (1948)

Origin: Puebla, Oaxacana and Morelos, Mexico. Altitude 1.000 - 2.400 m.

Conservation status: Listed in CITES appendix 2.

Synonyms:

Mammillaria claviformis
Mammillaria duoformis var rectiformis
Mammillaria duaformis var xuchiapensis
Mammillaria erythrocalix
Mammillaria heeriana Bkbg. n.n.
Mammillaria rossiana Heinr.
Mammillaria hamata Lehmann ex Pfeiff. = nom. dub
Neomammillaria hamata
Cactus hamatus,(Mart.) Britton & Rose

Slowly forms multiheaded specimen, with individual stems that are somewhat elongated-globular and bears a profusion of deep carmine flowers in mid-summer.

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.

A Special Thanks to all Those Who help us to make this web site
This plant description is based on research and personal experiences, and is too short to provide a comprehensive coverage of the subject. Do you see an error in what is shown? Or do you know more about the species than what we are showing? Your help is greatly appreciated. Why not send us an email with further information or photos, so that we can correct or extend the information provided?

The photos in this site are subject to copyright. Images may not be copied, downloaded, or used in any way without the expressed, written permission of CACTUS ART nursery and the original photographer.