Features of the morphology of representatives from the section of Apar genus Galium (Rubiaceae) in connection with the questions of their system

Morphological features of annual species of the section Aparine (Rubiaceae) are given. It was revealed that closely related species G. aparine and G. vaillantii differ in pubescence of the stem under whorls, pubescence of the upper side of the leaf, column shape, long stamen flament, anther attachment and peculiarities of fruit pubescence. The main differences between G. spurium and related species are shown.