Read about Echinocactus sileri in the Standard Cyclopedia of Horticulture
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Echinocactus Sileri, Engelm. Globose: ribs 13, prominent, densely crowded, with short rhombic-angled tubercles: radial spines 11-13, white; centrals 3, black, with pale base, ⅗ in. long, the upper one slightly longer: fls. scarcely 1 in. long, straw-colored. Utah.
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- REDIRECT Pediocactus sileri