Range of distribution of Willow-leaf Lettuce (Lactuca saligna L.).

Object description Download GIS-layers


The expert-botanist - I.G.Chukhina,
the GIS expert - T.A.Sinitsyna.

Date of creation:



1:20 000 000.

Accuracy of the map:

The map is based on data of 1:5 000 000 - 1:22 500 000 scale maps.


"Albers Equal-Area Conic Projection for USSR", 9, 1001, 7, 100, 0, 44, 68, 0, 0

Basic contents:

The map is a vector file consisting of a polygon and dots. The localities of the species are represented by dots; the area of possible species distribution is represented by the polygon.

Accuracy of the qualifier:

The dots represent information on the species localities according to published sources and herbarium specimens. The polygon is based on generalized information from published sources and herbarium specimens.

Method of the map contruction:

The data on the species distribution were obtained from the database of the species localities coordinates included in the Information Retrieval System "Crop Wild Relatives in Russia" (STC Informregistr 0229905883, 1999), from the map on the IPGRI site ( ), and from published information Shishkin, 1936; Grossheim, 1949; Nikitin, 1983; Tzvelev, 1989; Mayevsky, 2006). The western, northern and eastern borders of the polygon are drawn according to data published in "Flora of the European part of the USSR" (Tzvelev, 1989) and corrected according to herbarium materials referred to in the database of the Information Retrieval System and Mayevsky (2006). The borders in the Caucasus are mainly drawn according to herbarium materials and specified after Grossheim (1949). Two localities are isolated from the main range and not included in the general polygon: one dot in Zhigulevsky Nature Reserve (Nukhimovskaya et al., 2003), the second one from collections of Pallas (Shishkin, 1936).


Herbarium specimens of V.L.Komarov Botanical institute [LE] (St.Petersburg, Russia).
Grossheim AA. 1949. Manual of plants of Caucasus. Moscow. 747 p. (In Russian).
N.I.Vavilov All-Russian Institute of Plant Industry, Herbarium Department, 1999. Information Retrieval System: Crop Wild Relatives in Russia. STC Informregistr 0229905883, St.Petersburg, Russia.
Mayevsky PF. 2006. Flora of the middle zone of European part of Russia. 10th ed. Moscow. 600 p. (In Russian).
Nikitin VV. 1983. Weed plants of the flora of the USSR. Leningrad: Nauka. 454 p. (In Russian).
Nukhimovskaya YuD., Gubanov IA., Isaeva-Petrova LS., Pronkina GA. 2003. Current state of biological diversity on protected areas of Russia. V.2. Vascular plants. Pt 1. Moscow. 404 p. (In Russian).
Tzvelev NN., ed. 1989. Flora of the European part of the USSR. V.8. Leningrad: Nauka. 412 p. (In Russian).
Shishkin BK., ed. 1936. Flora of the southeast of the European part of the USSR. V.6. Pyrolaceae-Compositae. Moscow; Leningrad. 483 p. (In Russian).
IPGRI. [Online] Available at:

Rights and copyrights:

The copyrights of the map and descriptions are held by their authors.
The copyright of the photo is held by L.V.Bagmet.

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