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Range of distribution of Blunt-leaved Clover (Trifolium retusum 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:

17.06.2007

Scale:

1:20 000 000.

Accuracy of the map:

The map is based on data of 1:13 000 000, 1:60 000 000 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; the 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 data (Bobrov, 1945, 1987), and published maps of the species range (Meusel et al., 1965) and a part of the range (Grossheim, 1952) were used for constructing the range of Trifolium retusum. Our view on the species distribution in Russia and adjacent states mainly agrees with the treatment of the species distribution by Meusel et al. (1965). The range consists of two polygons and dots. The first polygon covers Moldova, southern Ukraine and Crimea; the second one covers the southern Russia and Caucasus.

References:

Galushko AI. 1980. Flora of the North Caucasus: Handbook. V.2. 352 p. (In Russian).
Grossheim AA. 1952. Flora of Caucasus. 2nd ed. V.5. P.194-221. (In Russian).
Bobrov EG. 1945. Clover - Trifolium L. In: Shishkin BK., ed. Flora URSS. V.11. P.189-261. (In Russian).
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).
Meusel H. et al. 1965. Vergleichende Chorologie der Zentraleuropischen Flora. Jena. 583 p.
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.