Allium regelii

Allium regelii Trautv. (syn. Allium cupuliferum var. regelii (Trautv.) Regel, Allium yatei Aitch. & Baker) is one of the most sought Alliums in the world, yet appears to be a poor seed producer. It is native from northern Iran to central Asia. It is the only species to produce two-tiered blooms, along with the hybrid Allium angulosum L. Photo by Wietse Mellema, showing a second umbel budding from a scape coming up from the lower umbel.