Ballota grisea SynonymySource: 2010: World Checklist of Selected Plant Families (2010), copyright © The Board of Trustees of the Royal Botanic Gardens, Kew.Ballota grisea Pojark. in Komarov, Fl. URSS 21: 651. 1954≡Ballota nigra var. grisea (Pojark.) Menitsky in Bot. Zhurn. (Moscow & Leningrad) 77(6): 70. 1992Content