Carl August Ehrenberg

Pelecyphora, pincushion cactus or foxtail cactus is a genus of cacti, comprising 20 species. They originate from Mexico and the United States. Common species include the Missouri foxtail cactus P. missouriensis, widespread in grassland and forest west of the Mississippi, and the spinystar P. vivipara, distributed across the US and into Canada, first described by Nuttall in 1813.

Mammillaria parkinsonii, also known as owl-eye pincushion or owl-eye cactus, is a species of flowering plant in the family Cactaceae. It is endemic to Queretaro, Mexico. Mammillaria parkinsonii is listed as Endangered due to a limited distribution (extent of occurrence ca 2,500 km2), severe fragmentation, a continuing decline due to illegal collection, and degradation of its habitat across its range. Clarification of the taxonomic status of this species is a research priority. It was first described by Ehrenberg in 1840 in Linnaea 14: 375.

Pelecyphora aselliformis is a species of Pelecyphora found in Mexico.

Mammillaria schiedeana is a species of Mammillaria native to Mexico that was first described in 1838 by C. Ehrenb.

Mammillaria beneckei is a species of flowering plant in the cactus family Cactaceae, native to western and central Mexico.

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Stenocereus beneckei is a species of cactus in the genus Stenocereus, endemic to Mexico.

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