Distribution of Equisetum pratense Ehrhart(Equisetaceae)
草问荆(木贼科)的地理分布

To understand and further explore the biological information about Equisetum pratense Ehrhart, this paper describes the distribution of E. pratense in detail for the first time. The distribution data originated from flora of different countries; herbarium sheets of PE, BJFC and IFP; and field observations. The distribution map was plotted by use of MapInfo Professional 8.0 software.