Cytology of Dicranostigma and Glaucium (Papaveraceae) from China Optimal Extract Processing of Alkaloids from Dicranostigma leptodum(Maxim.) Fedde by Orthogonal Design Mode and Its Scavenging Activity of Free Radicals Chemical constituents of alkaloids from Dicranostigma leptopodum A NEW SPECIES OF DICRANOSTIGMA FROM HENAN AND ITS KARYOTYPE Cytology of Dicranostigma and Glaucium (Papaveraceae) from China Optimization of the extracting process for alkaloids from Dicranostigma leptopodum by response surface analysis and study on its antibacterial activity in vitro TWO NEW SPECIES OF DICRANOSTIGMA