Mammillaria chlorantha Engelmann in Rothrock, Rept. U.S. Geogr. Surv. West 100th Merid., Vol. 6: Botany, 6: 127, 1878.
Rothrock, J.T.: Report upon United States Geographical Surveys West of the One Hundredth Meridian.
Vol. VI. Botany. Geo. M. Wheeler, Corps. of Engineers, U.S. Army. Washington. Government Printing Office. 1878.
Mammillaria (Coryphantha) chlorantha, n. sp., Engelm. [as Mamillaria]
Similar to the last, but with broader yellow petals; stems oval to cylindrical, 3' wide; sometimes 8-9' high; tubercles compressed from above; 20-25 outer spines gray, almost in 2 series; 6-8 or 9 inner ones stouter, 1/2-1' long, reddish or brownish only at the tip; flowers yellowish or greenish-yellow, crowded on the top of the plant, 1 1/2' long and wide, often 1-2 small, fringed sepals on the ovary (which also occasionally is seen in vivipara); sepals lanceolate, fringed; petals lanceolate or linear-lanceolate, acute, denticulate; 7-9 whitish stigmas, erect-spreading. - Southern Utah, east of Saint George, Dr. Parry I. E. Johnson
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Last modified February 25, 2010
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