New data about rare plants species of the saratov region. materials to the third edition of the regional red book
The new data of the distribution in Saratov region one of the rare species of plants, listed in the second edition of the regional Red Book, and three species, recommended for introduction in the third edition of the Saratov region Red Book are presented. Information about communities with Aegilops cylindrical provides for the first time to Saratov region. The information about habitat and vegetation communities where is each rare species marked is performed. On the basis of the data they are given the recommendations to include Ruppia maritima in the third edition of the Red Book with the category and status 1 (E). Another two types - Batrachium rionii and Ceratophyllum submersum they are recommended categories 2 (V) and 3 (R), respectively. The information in the article is the result of research within the framework of the long-term monitoring of the vegetation cover of the Saratov region and can serve as a basis in the conduct of regional Red data book.