Floristic notes from Brno and its vicinity

This article presents some interesting botanical finds in the city of Brno and its surroundings. The observations focused on native endangered species and species with decreasing occurrence. Species frequencies were compared with those from a survey of synanthropic flora in the city of Brno made at the end of 1970s. Some rapidly spreading alien species were registered. In this respect the occurrence of some rare orchids among blocks of flats in the Lesná district is interesting. More intensive management of the urban space has caused extinction of some previously common synanthropic species (Artemisia annua) or a significant decrease in their occurrence (Heracleum mantegazzianum). An increasing number of localities of Artemisia tournefortiana,Duchesnea indica, Geranium sibiricum or Bunias orientalis has been observed.