Mammillaria radiosa

Mammillaria radiosa subsp. var.
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Standard Cyclopedia of Horticulture

Mammillaria radiosa, Engelm. Ovate or cylindrical, sometimes proliferous: tubercles terete: radial spines 20-30, white, with dusky apex, very unequal; centrals 4 or 5, stouter and longer, tawny, upper ones longer, lowest shorter and horizontal: fls. 1½-2 in. in expansion; stigmas obtuse. S. Texas and N. Mex Mammillaria radiosa, Engelm. Ovate or cylindrical, sometimes proliferous: tubercles terete: radial spines 20-30, white, with dusky apex, very unequal; centrals 4 or 5, stouter and longer, tawny, upper ones longer, lowest shorter and horizontal: fls. 1½-2 in. in expansion; stigmas obtuse. S. Texas and N. Mex Var.neo-mexicana, Engelm. (M. Hirschtiana, Haage f.). Lower, more or less proliferous from the lower grooves: radial spines 20-40, white; centrals 3- 12, white below, blackish above. Var. borealis, Engelm. Ovate or subglobose: radial spines 12-20; centrals 3-6, purple-spotted. Very near M. vivipara. Var. arizonica, Engelm. Globose or ovate, large: tubercles long-cylindrical: radial spines 15-20, whitish; centrals 3-6, deep brown above: fls. large, rose-colored. N. Ariz. Var. deserti, Engelm. Low, simple, with slender nearly cylindric tubercles: radial spines 15-20; centrals 8-10, reddish tipped: fls. straw-colored, with purplish tips. Ivanpah, Calif. Var. chlorantha, Engelm. Cylindrical, sometimes as much as 9 in. high: radial spines 20-25, almost in 2 series, gray; centrals 6-9, stouter, ½ -l in. long, reddish only at tip: fls. greenish yellow. S. Utah. Var. Alversonii, Coulter. Foxtail Cactus. Robust and branching, sometimes 10 in. long, glaucous: tubercles short and broad, somewhat angled, forming more or less distinct ribs: radial spines numerous; centrals 8-14, stout, spreading, blackish half-way down: fls. pink. S. E. Calif. The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

External links

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