Relatives

The distribution area of Rheum rhabarbarum L.

Object description Download GIS-layers

Authors:

Expert botanist T.N. Smekalova
GIS-expert R.S. Ushakova

Date of creation:

19.10.2004

Scale:

1:20,000,000.

Accuracy of map:

Map was created using maps of scale 1:17,000,000-1:25,000,000 and herbarium specimens.

The projection:

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

Basic content:

Map is a vector file consisting of a polygon and points. Locations of the species are represented by points, while the area of possible distribution of the species is represented by a polygon.

Accuracy of qualifier:

Light-colored points represent species locations referenced in published sources. Dark-colored points represent locations from which herbarium samples were taken (Komarov Botanical Institute, St. Petersburg). Polygon is based on generalized information from published sources, herbarium specimens, political boundaries and ecological descriptions.

Method of map construction:

Locations and area of distribution of the species were determined using published maps and herbarium materials from the Komarov Botanical Institute (BIN) (St. Petersburg). The distribution area was constructed using the BIN herbarium collections and published maps of species distribution (Schmidt, 1990; Malyshev & Peshkova, 1992, 1997) and is represented as a uniform range. Species distribution within the former USSR was mapped in accordance with Schmidt (1990) and herbarium data. The main part of the species distribution area lies in Northern Mongolia. Within the former USSR, the species grows only in Eastern Siberia, which lies in the northern part of the natural distribution area of the species. The points located outside the general distribution area represent a preternatural area of the species.

Sources of data:

Cherepanov S.K. 1995. Plantae Vasculares Rossicae et Civitatum Collimitanearum (in limicis USSR olim). St. Petersburg, Mir I Semia, 990 p. (in Russian).
Herbarium Specimens. Komarov Botanical Institute (St. Petersburg).
Kharkevich S.S., ed. 1989. Vascular Plants of the Soviet Far East. Vol. 4. Leningrad: Nauka, 380 p. (in Russian).
Komarov V.L., ed. 1936. Flora of the USSR. Vol. 5. M.-L.: Publishing House of Acad. Science, pp. 484-485. (in Russian).
Malyshev L.I., Peshkova G.A., eds. 1992. Flora of Siberia. Vol. 5. Salicaceae - Amarantaceae. Novosibirsk: Nauka, p. 281. (in Russian).
Malyshev L.I., Peshkova G.A., eds. 1997. Flora of Central Siberia. Vol. 1. Novosibirsk: Nauka, p. 28-29. (in Russian).
Schmidt V.M., ed. 1990. Areas of distribution of medicinal plants and their relatives in the USSR (Atlas). Leningrad: Leningrad University Publishers, 2nd edition (revised), p. 50. (in Russian).

Right and copyright:

Copyright on this map and its description belongs to its authors.
Copyright on this picture belongs to Markku Savela: ( http://www.funet.fi/pub/sci/bio/life/plants/magnoliophyta/magnoliophytina/magnoliopsida/polygonaceae/rheum/rhabarbarum-1.jpg ,
http://www.funet.fi/pub/sci/bio/life/plants/magnoliophyta/magnoliophytina/magnoliopsida/polygonaceae/rheum/rhabarbarum-1x.jpg ).