Area of distribution and weediness of Galeopsis bifida Boenn.

Object description Download GIS-layers


Object specialist, T.D. Sokolova
GIS-specialist, I.A. Budrevskaya

Date of creation:




Accuracy of map:

Map was created using maps of natural scale 1:5,000,000-1:100,000,000 and published data.


"Alber's Equal Area Conic", USSR, 9, 1001, 7, 100, 0, 44, 68, 0, 0.

Basic contents:

Vector map. Main distribution area is shown by polygon, while sporadic distribution is shown by points. Zone of weediness is shown by polygon.

Accuracy of classifier:

Within the weed distribution area, the zones of main and sporadic distribution and the zone of weediness are shown. The zone of weediness is where G.bifida is a pernicious weed.

Mapping Procedure:

Areas of main and sporadic distribution and weediness were established following an analysis of published maps and literature. The distribution area of G.bifida is based on the map taken from Hulten & Fries (1986). The boundaries of the zone of weediness were established using Nikitin (1983) and Ulyanova (1998) and were further specified in accordance with data on abundance and frequency of species occurrence, which were taken from the below-mentioned references and adjusted in accordance with the boundaries of arable lands. According to Nikitin (1983), G.bifida occurs fairly often, sometimes abundantly, in the forest zone of the European part of the former USSR, as well as in Western and Eastern Siberia. Ulyanova has included G.bifida on the list of main weeds of crops in the European part of the former USSR and Western and Eastern Siberia (1998). According to Ulyanova et al. (1992), G.bifida is a pernicious weed in the Novgorod and Vologda Regions, where it is characterized by 75-100% occurrence frequency and 3-5 points of abundance. Buch et al. (1981) have pointed out that G.bifida is widespread everywhere in the Primoskii Territory, often abundantly, and is especially pernicious in tilled crops.

Sources of data:

Buch, T.G., Kachura, N.N., Shvydkaya, V.D., & Andreeva, E.R. 1981. Weed plants of the Primoskii Territory and their control. Vladivostok: Dal'nevostochnoe Publishing House, 243 p. (in Russian).
Dorogostaiskaya, E.V. 1972. Weed plants of the Far North of the USSR. Leningrad: Nauka, 172 p. (in Russian).
Grossgeim, A.A. 1967. Flora of the Caucasus. V.7. Leningrad: Nauka, 896 p. (in Russian).
Hulten, E. & Fries, M. 1986. Atlas of North European Vascular Plants, North of the Tropic of Cancer. Konigstein. V. 1-3. 1172 p.
Malyshev, L.I., ed. 1997. Flora of Siberia. V.11. Novosibirsk: Nauka, 296 p. (in Russian).
Nikitin, V.V. 1983. Weed plants of the USSR flora. Leningrad: Nauka, 454 p. (in Russian).
Shlyakova, E.V. 1971. On weed infestation of crops of Mesen district of the Arkhangelsk Region. Botanicheskii zhurnal 56(6): 863-868 (in Russian).
Shlyakova, E.V. 1982. Field-weed plants of the Non-Chernozem zone of RSFSR. In: Korovina, O.N., ed. Catalogue of VIR world collection. Issue 338. Leningrad:VIR, 117 p. (in Russian).
Tolmachev, A.I., ed. 1977. Flora of North-East of the European part of the USSR. V.4. Leningrad: Nauka, 312 p. (in Russian).
Ulyanova, T.N. 1981. Weed plants in wheat of the USSR. In: Korovina, O.N., ed. Catalogue of VIR world collection. Issue 320. Leningrad: VIR, 68 p. (in Russian).
Ulyanova, T.N. 1983. Weed plants of the Soviet Far East. In: Korovina, O.N., ed. Catalogue of VIR world collection. Issue 374. Leningrad: VIR, 48 p. (in Russian).
Ulyanova, T.N. 1998. Weed plants in the flora of Russia and other CIS states. St.-Petersburg: VIR, 344 p. (in Russian).
Ulyanova, T.N., Kondratenko, V.I., Ivanov, I.A. & Mal'kova, E.A. 1992. Weed plants of the Novgorod, Vologda and Arkhangelsk Regions. In: Erokhin, V.D., ed. Byulleten. VIR. Issue 229: 69-74 (in Russian).
Visyulina, O.D., ed. 1970. Weeds of the Ukraine. Kyiv: Naukova dumka, 508 p. (in Ukrainian).
Volkov, A.N., ed. 1935. Areas of distribution of the major weed plants in the USSR. Moscow & Leningrad: State Publishing House of Kolkhoz and Sovkhoz Literature, 152 p. (in Russian).

Right and copyright:

All rights reserved. Copyright 2004 © T.D. Sokolova, I.A. Budrevskaya & N.N. Luneva (vector map, picture, description).

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