Allium ritsii IATROU & TZANOUDAKIS from the area of Monemvasia in S. P
eloponnisos is described as a new species. It is an autumn-flowering s
pecies closely related to Allium cupani RAFIN. subsp. hirtovaginatum (
KUNTH) STEARN (A. sect. Brevispatha), but well differentiated ecologic
ally, morphologically and cytologically from the other Mediterranean t
axa of this group.