Trichomes of mericarpian species of the genus Galium (Rubiaceae) in Asian Russia

Abstract

The surface structure of mericarp of 16 species from 9 sections of the genus Galium, growing in Asian Russia, has been studied by scanning electron microscopy. Clothing trichomes were found on the surface of the fruit. It was noted that the clothing trichomes are distributed over the mericarp or concentrated in separate parts of it. Based on the results obtained, two morphological types and six subtypes of clothing trichomes were identified, which have taxonomic significance.