Mammillaria duoformis
Allan Hancock Found. Publ. Occas. Pap. no. 2: 59, tab. 18, fig. 4. 1948
Family
Cactaceae
Genus
Species
Mammillaria duoformis
Author
R.T.Craig & E.Y.Dawson
Chinese genus
乳突球属
Chinese name
-
DescriptionEdit description
Central Spines
4, pinkish tan below, blackish brown above, 8 - 12 mm long (or more), lowermost one red to blackish hooked and longer.
Seeds
Brown.
Description
Slowly clumping columnar cactus.
Flowers
Bell shaped in apical rings, bright pink to light carmine, to 15 mm long and 12 mm in diameter.
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 Spines
18 - 20, slender, needle-like, straight, chalky white to pale yellow above, orange brown below, 5 - 7 mm long.
Fruits
Pale brownish pink.