<i>Parodia concinna</i> formerly <i>Notocactus concinnus</i> var. <i>aceguaensis</i> AH197, color was mostly yellow; size of Notocactus: diameter 4.2cm, height 2.5cm.
Andreas Prange
CC BY 2.0
<span class="int-own-work" lang="en">Own work</span>