Home – Home – Jornals – Flora and Vegetation of Asian Russia 2020 number 1

The structure of synflorescences, the flowering of the main-florescences, co-florescences and partial florescences, as well as the perfect and pistillate flowers of Prunella vulgaris L. ( Lamiaceae) have been studied. Observations were carried out in 2016-2019 according to generally accepted methods in the Moscow region. It has been shown that the floral unit of P. vulgaris is an open bracteose thyrsus, which may be apical and unique. There are three types of synfl orescences in P. vulgaris : a single terminal thyrsus, a closed raceme or panicle of such thyrsi. It was revealed that the bisexual flowers of P. vulgaris are adichogamous (androecium and gynoecium in flowers mature at the same time). It has been established that the lifetime of bisexual fl owers is 2-4 days, and one of pistillate flowers is 4-6 days. P. vulgaris is characterized by the morning rhythm of the opening of bisexual and pistillate flowers. It has been shown that the opening of flowers in the floral units of P. vulgaris occurs in the acropetal sequence. Blooming of the floral units of the paraclades in the synflorescence occurs in the basipetal order.