We investigated pollen viability and stigmatic surface morphology and receptivity in sexual reproduction of Taraxacum ohwianum Kitag.,obligate apomicts of T.antungense Kitag.,facultative apomicts of T.mongolicum Hand.-Mazz.using germination in vitro and techniques of scanning electron microscopy and benzidine-hydrogen peroxide test.The result showed that:(1)Three kinds of dandelion stigma were dry stigma,single-celled papilla and belong to the primitive taxa.The phenomena of dichogamy and herkogamy appeared in dandelion.The papilla of T.ohwianum Kitag.was full grown and tight,T.antungense Kitag.was more wizened and T.mongolicum Hand.-Mazz.was the most wizened and rarefaction.(2)When stigma was in the Y-type ,the pollen germination capacity rate of T.ohwianum Kitag.and T.antungense Kitag.was the highest,at 67.3% and 19.8% respetiviely.The highest rate of pollen germination capacity of T.mongolicum Hand.-Mazz.was 23.3% when stigma was in stick-type.(3)The stigmatic receptivity of three kinds of dandelions was rising with flowering.When stigma was in the Y-type,it was the best pollination period on the kinds of dandelion and the rate of stigmatic receptivity in samples were 98.7%(T.ohwianum Kitag.),84.0%(T.antungense Kitag.),21.3%(T.mongolicum Hand.-Mazz.),respectively.There was transparent difference of sexual reproduction of dandelion and apomicts of dandelion in pollen germination capacity,papilla and stigmatic receptivity,which was an evidence of the redistribution of energy in sex organ of dandelion in long term evolution.