Relatives

Range of distribution of Zigzag Clover (Trifolium medium L.).

Object description Download GIS-layers

Authors:

The expert-botanists - N.I.Dzyubenko, E.A.Dzyubenko.
The GIS expert - A.N.Dzyubenko.

Date of creation:

17.03.2007

Scale:

1:20 000 000.

Accuracy of the map:

The map is based on data of 1:13 000 000, 1:25 000 000, 1:80 000 000 scale maps, specified according to herbarium materials.

Projection:

"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 1 basic and 2 subject layers. The species range is represented by polygons and dots.

Accuracy of the qualifier:

The dots represent information on the species localities: 1 - reliable data from herbarium and published sources; polygons (1) - generalized information on the species distribution from published sources and herbarium specimens.

Method of the map construction:

The data from the herbarium materials of LE and WIR, published maps of parts of the species distribution range (Grossheim, 1952; Hulten, Fries, 1986; Polozhij, Malyshev, 1994) and published data were used for constructing the range of Trifolium medium. Our view on the species distribution in Russia and adjacent states mainly agrees with the concept of the species distribution of Hulten and Fries (1986). We have somewhat extended the polygon borders on the basis of the herbarium material and published data (Bobrov, 1945, 1987). The range consists of three polygons and dots. Two small polygons are situated in the Crimea and the Caucasus. The largest polygon takes a significant part of the former European part of the USSR (except for the northern and southern Russia), Urals, West Siberia and partly East Siberia. Dots outside the polygons reflect separated species localities.

References:

Brezhnev DD., Korovina ON. 1981. Wild relatives of cultivated plants of the flora of the USSR. Leningrad: Kolos. 376 p. (In Russian).
Grossheim AA. 1952. Flora of Caucasus. 2nd ed. V.5. P.194-221. (In Russian).
Minjaev NA., ed. 1981. Manual of Higher Plants of the Northwestern European Part of RSFSR. Leningrad. 376 p.
Bobrov EG. 1987. Clover - Trifolium L. In: Fedorov AA., Tzvelev NN., eds. Flora of the European part of the USSR. V.6. P.195-208. (In Russian).
Bobrov EG. 1945. Clover - Trifolium L. In: Shishkin BK., ed. Flora URSS. V.11. P.189-261. (In Russian).
Pavlov NV., ed. 1961. Flora of Kazakhstan. V.2. Alma-Ata. 515 p. (In Russian).
Polozhij AV., Malyshev LI., ed. 1994. Flora of Siberia. Fabaceae (Leguminosae). V.9. (In Russian).
Hulten E., Fries M. 1986. Atlas of North European vascular plants north of the Tropic of Cancer. V.1-3. Konigstein: Koeltz Scientific Books.
Herbarium specimens of V.L.Komarov Botanical Institute [LE], N.I.Vavilov All-Russian Institute of Plant Industry [WIR] (all in St.Petersburg, Russia).

Rights and copyrights:

The copyrights of the map and descriptions are held by their authors.
The copyright of the photo is held by E.A.Dzyubenko.