red flower euphorbia geroldii plant ,gerold`s spurge ,thornless crown of thorn ,semi-succulent family euphorbiaceae tropical flowe

africa agave ball barrel bloom botanic botanical botany cacti cactus crown desert echinocactus euphorbia euphorbiaceae flora floral flower fresh garden gerold geroldii green grusonii macro madagascar mammillaria nature orange ornamental petals plants pollen red rock round semi soil spurge stem succulent texture thorn thornless thorns tropical various yellow