内蒙古石竹属的分类和分布

A Study on the Classification and Distribution of the Genus Dianthus in Nei Mongol

1978年出版的“内蒙古植物志”第二卷中石竹属收载了2种,2变种。经过研究,本文记载了内蒙古境内分布的本属植物4种,3变种,其中发現1个新变种——毛簇茎石竹Dianthus repens z.var.scabri pilosus Y.Z.Zhao。在内蒙古境内,本属植物的区系地理成分主要是欧、亚大陆以及北美洲广泛分布的古北极或泛北极成分,只在本区的东南部渗入1种东亚成分,此外没有其它特殊的区系地理成分,本属植物主要分布在内蒙古的森林区和草原区,在荒漠区几乎没有它们的分布。

In 'Flora Intramongolica' (Vol. 2.) published in 1978, there are only 2 species and 2 varieties. After studying and distinguishing, there are 4 species and 3 varieties in Nei Mongol region. Among them the author found 1 new variety—Dianthus repens Willd. var. scabripilosus Y. Z. Zhao. Besides a key to species is given in this paper. The characteristics of eco—geographical distribution of the plants of Dianthus in Nei Mongol are also described in this paper. The plants of Dianthus in Nei Mongol are mainly distributed on the forest area and the steppe area. The floral geographical elements of the plants of Dianthus in Nei Mongol are mainly composed of the elements of Palaeoarctic and Pan—arctic, and are permeated with Eastern Asia elements in the Southeastern part.