Pelecyphora hesteri


Pelecyphora hesteri is a species of flowering plant in the family Cactaceae, native to Texas, United States and Mexico.

Description

Pelecyphora hesteri grows with many shoots, is often richly branched and forms cushions. The egg-shaped to spherical shoots reach heights of 2.5 to 5 centimeters and diameters of 2.5 to 3.5 centimeters. Their wide and conspicuous warts are 7 to 12 millimeters long. The one to four white central spines are similar to the marginal spines and are up to 1.5 centimeters long. The twelve to 22 white marginal spines are 0.7 to 1.5 centimeters long.
The light pink to light purple flowers are 1.5 centimeters in diameter and up to 2.3 centimeters long. The green to yellowish, almost spherical fruits are 6 to 7 millimeters long. When ripe they become dry.

Subspecies

There are two accepted subspecies:
ImageScientific nameDistribution
Pelecyphora hesteri subsp. grata Mexico
Pelecyphora hesteri subsp. hesteriTexas

Distribution

Pelecyphora hesteri is distributed in Brewster County, Texas, in the United States and to NE. Mexico.

Taxonomy

The first description as Coryphantha hesteri by Ysabel Wright was published in 1932. The specific epithet hesteri honors the American cactus lover John Pinckney Hester from Fredonia, one of the leading researchers of the Big Bend area. Franz Buxbaum placed the species in the genus Escobaria in 1951. Further nomenclature synonyms are Escobesseya hesteri Hester, Mammillaria hesteri D.Weniger and Escobaria hesteri Buxb..