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A B S T R A C TFruit micromorphology of all 65 native species of the Umbelliferae of the Rus sian Far Easrt was studied. We described cell arangement, cell form, fine relief of cell wall (cuticular foldings), epicuticular wax, stomata, crystals. Scanning electron microscope (SEM) also gave information on the inner structure of plant organs. We discuss the diversity of micromorphological characters and their taxonomic value. Some new diagnostic characters for the genera Kitagawia (areas with rugu late cuticle), Ligusticum and Magadania (large convex exocarp cells) were revealed. SEM images provide an opportunity to interpret our ob ser vation with an optic stereomicroscope and find new da ta for plant identification and taxonomic work. For example, the exocarp composed of large convex cells has the appearance of a shiny, grainy surface under the stereo microscope while the exocarp of small cells is matte and not grai ny. SEM images helped to distinguish between hair types and notice small projections. We used these characters in our identification keys (Pimenov & Ostroumova 2012, Plunkett et al. 2018. Fine details (1-5 μm) can also provide important material for taxonomy (e.g. Fedoronchuk 1983). M A T E R I A L A N D M E T H O D SWe studied the fruits of all the native species of the Rus sian Far East. The fruits were collected during field work, in the living plant collection of MSU Botanical garden, and in some herbaria. Fruit samples are stored in the carpological collection in the Botanical garden of the Lomonosov Mos cow State University.SEM studies of fruits were made with a CamScan S-2 (ac ce le rating voltage 15 kV and working distance 56 mm) at the magnification of 15-3000x. Dry fruits were placed on aluminium stubs and sputtercoated with gold or goldpal la dium to a thickness of ca. 25 nm.In our previous publications we compiled the diction ary for characters and character states for the Umbellifer ous fruits (Ostroumova et al. 2010(Ostroumova et al. , 2011. Basic points for des crip tion of SEM images were published by Barthlot & Eh ler (1977) and Barthlot (1981), for the fine relief of the cell wall we used palynological terminology where possible (Hesse et al. 2009).