By Weniger D.
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Extra info for Cacti of the Southwest
1 inch in diameter. (below, left) Pediocactus papyracanthus. 2 inches tall. (below, right) Epithelantha micromeris. 11/2 inches in diameter. 26 27 Mammillaria scheeri. 6 inches in diameter. Mammillaria scolymoides. 31/4 inches in diameter. Mammillaria echinus. Stem 21/4 inches in diameter. 28 Mammillaria sulcata. 41/8 inches in diameter. Mammillaria ramillosa. 31/4 inches in diameter. 29 Mammillaria macromeris. Young plant, not yet clustered. 3 inches tall. (below, left) Mammillaria runyonii. 4 inches in diameter.
Lasiacantha var. denudata in foreground. (below, right) Mammillaria lasiacantha var. lasiacantha. Stem 1 inch in diameter. 39 Mammillaria lasiacantha var. denudata. Stem 2 inches in diameter. Mammillaria multiceps. Cluster of stems, 41/8 inches across. 40 Mammillaria microcarpa. 2 inches tall. Mammillaria wrightii. Stem 13/16 inches in diameter. 41 Mammillaria wilcoxii. Stem 17/8 inches in diameter. Mammillaria heyderi var. heyderi. 41/3 inches across. Mammillaria heyderi var. applanata. 4 inches across.
Plants in garden cultivation. Clusters 4 to 6 inches in diameter. (above, right) Mammillaria leei. Typical root formation. Large clump, 41/4 inches across. (below, left) Mammillaria pottsii. Largest stem, 11/3 inches across. M. lasiacantha var. denudata in foreground. (below, right) Mammillaria lasiacantha var. lasiacantha. Stem 1 inch in diameter. 39 Mammillaria lasiacantha var. denudata. Stem 2 inches in diameter. Mammillaria multiceps. Cluster of stems, 41/8 inches across. 40 Mammillaria microcarpa.