Flora of the Danube Delta Biosphere Reserve includes 1,589 species of plants, the distribution of which is given in Table. 1. There are about 966 species of higher vascular plants which make up about  19.17% of the flora of Ukraine. Another 593 plant species that are found on the reserve are non-vascular.

Taxonomic groups of plants Number of species
Higher plants
Vascular plants
Angiosperms (flowering) 951
Gymnosperms 3
Pteridophytes 4
Horsetail and lycopsids 8
Total vascular 966
Vascular plants
Mossy 2
At higher plants 968
Lower plants
Lichens 27
Algae 525
Miksomitsetov 6
Macromycetes 33
At lower plants and fungi 591
Total higher and lower plants and fungi 1589

Nearly half of these species - 415 (42.96%) occur frequently and in large quantities. 59 species (6.11%) occur frequently or are common species in the Danube Delta. 345 (35.71%) rare species have been found in large quantities.  137 (14.18%) species occur rarely with a small number, and 10 (1.04%) have been found in less than ten locations.

        The most rarely seen species include the Danube Delta Biosphere Reserve Morio chemeritsevidny Epipactis helleborine (L.) Crants., Dactylorhiza May Dactylorhiza majalis (Reichenb.) PFHunt et Summerh, broad-arrowhead Sagittaria latifolia Willd., Torulinium fertile Torulinium ferax Rich., Aldrovandi puzyrchitaya Aldrovanda vesiculosa L., zolotoborodnik cycads Chrysopogon gryllus (L.) Trin.), as well as some new species for the reserve - pellitory Serbian Parietaria serbica Panc. hairlike and millet Panicum capillare L.

Rare to the Reserve include such species as summer snowflakes Leucojum aestivum L., water chestnut krupnokornevoy Trapa macrorhiza Dobrocz., Water chestnut lozhnokolhidsky T. pseudocolchica V. Vassil., Feather Dnieper Stipa borysthenica Klok. ex Prokud., feather hairy S. capillata L., carnation Bessarabia Dianthus bessarabicus Klok., zlakolistny pondweed Potamogeton gramineus L., black alder Alnus glutinosa (L.) Gaertn., kendir Sarmatian (kendir Venetian) Trachomitum sarmatiense Woodson (Trachomitum venetum (L.).

          Some regionally rare plant species include Aldrovandi bubble Aldrovanda vesiculosa, summer snowflakes Leucojum aestivum, zolotoborodnik cycads Chrysopogon gryllu, cloves Bessarabia Dianthus bessarabicus, Morio broad-Epipactis helleborine, lremlik marsh Epipactis palustris (L.) Crantz, marsh orchid Orchis palustris Jacq., Dactylorhiza May Dactylorhiza majalis, zlakolistny pondweed Potamogeton gramineus L, ostrolepestkovy rush Juncus acutiflorus L., sword-grass marsh Cladium mariscus, obvoynik Greek Periploca graeca L., leukantemela later Leucanthemella serotina (L.) Tzvel., Galati sorrel Rumex halacsyi Rech., andromeda ordinary Tussilago farfara L., great horsetail Equisetum telmateia Ehrh., bird cherry Padus avium Mill., underwater hornwort Ceratophyllum submersum L., Dandelion Danube Leontodon danubialis Jacq., duckweed humped Lemna gibba L., Kermek Danube Limonium danubiale, Fuma lying Fumana procumbens ( Dun.) Gren. et Godr.

        With a height of several hundred meters Kiliyskaya Danube Delta looks boundless with the expanse of the common reed Phragmites australis. Inland waters for the most part are covered with water chestnut floating communities, white lily Nymphaea alba, yellow capsule Nuphar lutea, and bolototsvetnika schitolistogo Nymphoides peltata. Along the edge of the shore towns and ordinary watercourses strip air-water vegetation of trostnoka ordinary Phragmites australis, Typha uzkolistogo Typha angustifolia, Typha broad-T. latifolia, Sparganium erectum direct ezhegolovnika etc.

        The vegetation in the area is different depending on the location of the site since the DBR is expansive and includes coastal areas, river channels and other variations. The northern part of the reserve is dominated by marsh, saline marsh and meadow vegetation types. The south is made up mostly of large areas of trees and shrubs, water and marsh. The east  hosts large populations of psammophytic halophytic, and the west, mostly swamp forest.

         The vegetation of the reserve is a holistic natural complex represented by communities of different types of organizations that are genetically different from each other: water, marsh, meadow, and forest. They are formed and developed under the influence of natural and anthropogenic processes in the Danube Delta. The main factors determining their location and spatial relationship, is the hydrological regime of the Danube and the nature of the interaction of the Danube waterways and the sea.

        The vegetation of the reserve can be divided into four main territorial complexes that are associated with the historical and spatial development of the territory. This plavnevo-littoral complex secondary mouth of the Danube Delta Kilia, arenas Zhebriyanskoy ridge plavnevy Stentsovsko-Zhebriyanovskih marshes and meadow marsh islands Ermakova. This has resulted in reservoir Sasyk becoming the most impoverished in the floristically aquatic ecosystem.

        Species richness of ecotopes are not directly based on their areas of the reserve. So, in wetland ecosystems, which represent about 70% of the territory, they are growing only 68 types of bog species (sixth in total), with 50 species growing on non-saline marshes, and 18 - in saline.

        The first place is occupied by the species richness of synanthropic species - 363 (including adventive) species, however,  the reserve area occupied by them are small (about 2%), and mostly abandoned land of gardens and three islands - Islands Ermakov, and Shabosh Prorvin that have undergone the greatest changes due to human activity. Changes in the natural state of these islands is primarily due to human activities, with shipping and its attendant manifestations - the dumping of dredging soil on the coastal ecosystems of the islands.

         Grassland ecotopes represent the largest number of native species of plants - 288, among which, 234 species are characteristic of freshwater meadows, and 54 for saline. By area, this group of ecotypes is only the third place (7%) after the marsh and water.

         Third place for the kinds of ecotopes steppe (139). The area of ​​the steppe vegetation in the reserve iws the lowest (less than 1%). It is fourth in the number of species and the area occupied by sand spread ecotopes (about 5%). In fifth place are water ecotopes (69 species). However, by footprint (about 20%), they are second only to the marsh. A smaller number of species are salt licks and salt . Forest ecotopes in the Danube Delta consists of 23 species of trees and shrubs. The area occupied by them are almost identical. However, forest Zhebriyanskoy strands -an artificial ecosystem where Crimean pine plantations dominated. Forests on the islands priustevyh areas consist primarily of native species of white willow and brittle, and of spits - out of the bushes (buckthorn, Loja, tamarisk, etc.).

        Background plants must also distribute the habitat. On non forested sand arenas svtrechayutsya Carex colchica, Euphorbia seguіerana Neck., Artemisia marschalliana Spreng., Centaurea odessana, Bromus squarrosus L., Salix rosmarinifolia L., Medicago kotovii, Crepis ramosissima, Secale sylvestre Host, Chondrilla graminea, Seseli tortuosum L., Linum austriacum L., Cynodon dactylon (L.) Pers., Eragrostis pilosa (L.) Beauv., Gypsophila perfoliata L., Asperula setulosa etc., and to the coastal spits - Leymus sabulosus, Melilotus albus Medik., Eryngium maritimum L. , Salsola soda L., Cakile euxina, Medicago kotovii, Artemisia arenaria DC., Gypsophila perfoliata, Hippophae rhamnoides L., Tamarix ramosissima, Elaeagnus angustifolia L. And other types of riverine ridges Background: Salix alba L., S. fragilis L., S. triandra, Populus nigra L., P. deltoides Marsh., Amorpha fruticosa, Calamagrostis epigeios, Phragmites australis, Alopecurus arundinaceus Poir., Phalaroides arundinacea, Inula sabuletorum Czern. ex Lavr., Tanacetum vulgare L., Carex riparia Curt., C. acutiformis etc. Not flooded and flooded low areas marshes  contain overgrown Elytrigia repens (L.) Nevski, Calamagrostis epigeios, Agrostis maeotica, A. stolonifera L. , A. gigantea Roth., Trifolium repens L., Festuca pratensis Huds., Carex distans L., Lactuca tatarica (L.) CA Mey., Cirsium alatum (SG Gmel.) Bobr., Althaea officinalis L. i іn., and saline land meadows - Juncus gerardii Loisel, J. maritimus, Schoenus nigricans L., Tripolium vulgare Nees, Suaeda prostrata, Salicornia prostrata, Artemisia santonica L., Plantago salsa Pall., P. cornuti Gouan, Limonium meyeri, Petrosimonia oppositifolia, Puccinellia gigantea (Grossh) Grossh, P. distans (Jacq.) Parl. etc.

         The largest area with flooded vegetation are long smoother sections of Phragmites australis, Schoenoplectus lacustris L., Typha angustifolia, Carex riparia, C. extensa, C. distans, C. otrubae Podp., C. acutiformis, Calystegia sepium (L.) R. Br., Salix cinerea, etc., and continuously flooded areas - Phragmites australis, Carex elata All., C. pseudocyperus L., C. acuta L., C. vesicaria L., Typha angustifolia, T. latifolia L., Glyceria maxima (C. Hartm.) Holmb., Acorus calamus, etc.

Aquatic vegetation in different types of the water reserve are different depending on the influence of the sea (salinity) and the speed of the water flow. The largest area is occupied by fresh water, in which the background species are Sparganium erectum, L. Nymphaea alba, Nuphar lutea (L.) Smith, Trapa natans, Stratiotes aloides L., Salvinia natans, Hydrocharis morsus-ranae, Spirodela polyrrhiza, Lemna minor, Ceratophyllum demersum L., Myriophyllum spicatum L. Potamogeton nodosus Poir., Potamogeton crispus L., Potamogeton perfoliatus L. and others. Brackish water species are include Ceratophyllum demersum, Potamogeton pectinatus L., Zannichellia palustris, Z. pedunculata Reichenb.

Most important though are the seaside tumors, namely new coastal sandy islands and open waters and shallow waters around the islands. These are areas in which there are processes of speciation and morphogenesis. This area has the highest concentration of live organisms during migration, breeding, spawning and nursery areas.

This general list of plant species is represented in the project's application of territory organization BR.