Plants forming clusters from offsets, sometimes dividing dichotomously. Stems globose to cylindrical, green to dark green, to 13 cm (5.1 in) or more high and 9 cm (3.5 in) in diameter. Tubercles pyramidal, axils with 10-25 white bristles
4-8 mm (to 0.3 in) long. Central spines 1-5, fewer with age, needle-like, light brown, becoming darker with age, 5-10 mm (0.2-0.4 in) at first, later to 25 mm (1 in) long. Radial spines 17-24, white, yellowish brown basally, later dark brown, 4-8 mm (to 0.3 in) long. Flowers red, to 15 mm (0.6 in) long and in diameter. Fruits club shaped, scarlet, 15-20 mm (0.6-0.8 in) long. Seeds brown. Distribution: Puebla, Mexico.
Mammillaria vetula Martius 1832 Chilita vetula (Martius) Orcutt 1926
Mammillaria gracilis Pfeiffer 1838, M. vetula subsp .gracilis (Pfeiffer)
D. R.Hunt 1997 Mammillaria magneticola J. Meyrán 1961 Mammillaria kuentziana P. Fearn & B. Fearn 1963, not validly published
Plants freely clustering to form flat-topped mounds. Stems globose to cylindrical, glossy blue-green, to 10 cm (3.9 in) in diameter. Tubercles firm to slightly flabby, bluntly conical, four-sided basally, without latex, axils slightly woolly or naked. Central spines 1-2, sometimes absent, reddish brown, straight, stout, needle-like, to 10 mm (0.4 in) long. Radial spines 11-25 at first, later as many as 50, or only 11-16, white, thin, straight, needle-like, 3-10 mm (to 0.4 in) long. Flowers lemon yellow, to 17 mm (0.7 in) long. Fruits whitish to greenish. Seeds black. Distribution: Hidalgo, Guanajuato, and Queretaro, Mexico.
Two subspecies of Mammillaria vetula are recognized. Subspecies vetula typically has 1-2 central spines, at least 25 radials, and flowers to 15 mm (0.6 in) or more long; it occurs at high elevations in Hidalgo, Guanajuato, and Queretaro. Subspecies gracilis often lacks central spines, has only 11-16 radials, and flowers to only 12 mm (0.5 in) long; it occurs in both Hidalgo and Queretaro.
Was this article helpful?
You Might Just End Up Spending More Time In Planning Your Greenhouse Than Your Home Don’t Blame Us If Your Wife Gets Mad. Don't Be A Conventional Greenhouse Dreamer! Come Out Of The Mould, Build Your Own And Let Your Greenhouse Give A Better Yield Than Any Other In Town! Discover How You Can Start Your Own Greenhouse With Healthier Plants… Anytime Of The Year!