Mammillaria tuberculosa

Mammillaria tuberculosa subsp. var.
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Standard Cyclopedia of Horticulture

Mammillaria tuberculosa, Engelm. (M. trobiliformis, Scheer). Ovate or cylindric. rather slender, somewhat dry of texture, the spines failing from the older tubercles, leaving them as dry, corky protuberances: tubercles short-ovate from a broad base; axils densely woolly: radial spines 20-30, slender, rigid, white; centrals 5-9, stouter, purplish above, the upper longer, erect, the lowest horizontal or deflexed: fls. 1 in. diam., pale purple: fr. ¾ in. long, red, with a conical cap formed of the withered remains of the fl.; seeds brown. Texas.—Four varieties of M. tuberculosa, vars. caespitilia, durispina, pubescens, and rufispina, which have been distributed in European collections, doubtless belong here. 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 It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article.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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