Determination of chelerythrine in Chelidonium majusChelidonium majus by RP-HPLC Characters of life cycle forms of Chelidonium majus populations in different habitats and their correlation to the contents of tannin, flavones and alkaloids in different organs CHROMOSOME NUMBERS OF 20 SPECIES FROM NORTHEAST CHINA Elaiosome Development in Chelidonium majus L. Seeds Determination of chelerythrine in Chelidonium majus by RP-HPLC