Epithelantha micromeris (Engelm.) A. Weber ex Britt. & Rose
Family: Cactaceae
pingpong ball cactus
[Epithelantha densispina Bravo,  more]
Epithelantha micromeris image
Patrick Alexander  
The endemic Mexican taxa have relatively large flowers like those of Epithelantha bokei.

FNA 2003, Benson 1982
Common Name: pingpong ball cactus Duration: Perennial Protected Status: Salvage restriced status in Arizona. General: Miniature and erect but usually unbranched and mostly spheric, this tiny plant is often flat-topped and 3-4.5 cm long by 1-6 cm in diameter with numerous tubercles and spines obscuring the stem, areoles are typically about 2 mm apart with the stem typically not deep-seated in substrate. Spines: Spines 20-90 per areole and accompanied by white woolly hairs in 1-5 series and appressed on sides of stems, these erect at stem apex but not distinguishable as central or radial spines. Flowers: Flowers diurnal and borne along adaxial margins of spine clusters but usually obscured by the long spines the stem apex, they are 3-4.5 mm diameter and up to 6+ mm long, funnelform with pale pink tepals that are 1 mm long and broad, the filaments are tinged with red and the anthers white to pale yellow. Fruits: Fruits indehiscent and bright red but narrowly cylindric and fleshy at maturity, 3-12 mm long by 1.5-6 mm diameter. Ecology: Found on limestone or sometimes igneous soils of rocky hills and ridges in deserts and grasslands from 3,500-5,000 ft (1067-1524 m). Notes: This species is considered rare in Cochise county. Ethnobotany: Unknown Etymology: Unknown Synonyms: Mammillaria micromeris Editor: SBuckley, 2010
Epithelantha micromeris image
Patrick Alexander  
Epithelantha micromeris image
Patrick Alexander  
Epithelantha micromeris image
Arizona State University Herbarium  
Epithelantha micromeris image
Arizona State University Herbarium  
The National Science Foundation
This project made possible by National Science Foundation Award 1410069