Home – Home – Jornals – Contemporary Problems of Ecology 2007 number 1

For 32 North-Asiatic species of 6 sections of Euphorbia genus, the features of cyathia arrangement in general inflorescence, such as quantity, arrangement and branching of inflorescence axes were studied. The differences between inflorescences of different species were established. The features of the general inflorescence structure were revealed, which have important diagnostic value on different taxonomical levels in the system of genus, such as differentiation of terminal umbel, number of rays of the umbel and axillary rays, number of secondary rays and degree of branching, etc. A key for the diagnostics of the studied species of Euphorbia using inflorescence features was worked out and short characteristics of inflorescences in each species were listed.