Plants solitary, clustering with age. Stems slightly depressed globose, dull leaf green, to 11 cm (4.3 in) high and 10 cm (3.9 in) in diameter, not densely covered by spines. Tubercles firm, conical, angled upward, somewhat rhomboid with age, to 12 mm (0.5 in) high, axils with white wool, later naked, without glands. Central spine usually one, sometimes absent, awl shaped, strong, stiff, curved downward, black, becoming gray with age, to 15 mm (0.6 in) long. Radial spines 12-14, thin, awl shaped, straight to slightly curved, dirty white with dark tips, 12-15 mm (0.5-0.6 in) long. Flowers lemon yellow, 4-5 cm (1.6-2 in) in diameter. Fruits obovate, gray-green. Distribution: Queretaro, Mexico.
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!