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Robinia ambigua idahoensis is a Papilionaceae fallen leaf Microphanerophyte which was produced in the Spain originally.It opens two times every year,the flowers in a big way,colored shape beautifully,the colored quantity are many,and without seeds.Robinia ambigua idahoensis in wide use in the landscape,urban and rural landscape,roads,scenic areas and other green garden of green treasures,for the most important landscape of fast-growing ornamental tree.This research was in the foundation which the predecessor studies,conducted the thorough research to the Robinia ambigua idahoensis.From Robinia ambigua idahoensis’ hops aspects and so on organ shape,pollen shape,pollen vitality, hydrogen peroxide isozyme carried on the determination,and carried on the comparison with Robinia pseudoacian L.,provided the partial theory basis by the time to the fragrant flowers Robinia ambigua idahoensis’ classified status and the fragrant flowers Robinia ambigua idahoensis’ not solid phenomenon.The result indicated:(1) The floral structure of Robinia ambigua idahoensis’ was bigger than that of Robinia pseudoacian L.,the calyx chorio was sparser than the Robinia pseudoacian L.; When peak flowering period the Robinia pseudoacian L.’s roecium and the stigmas reveal from the dragonbone petal,the Robinia ambigua idahoensis’ roecium and the stigmas complete diaper did not reveal in the dragonbone petal.Carried on the scanning using the scanning electron microscope(SEM) technology to the Robinia pseudoacian L.and the Robinia ambigua idahoensis’ roecium and the stigmas,from the scanning picture,we know the Robinia pseudoacian L.and the Robinia ambigua idahoensis’ stigmas had the short wool,but the Robinia ambigua idahoensis’ longer than the Robinia pseudoacian L.’s.The Robinia pseudoacian L.’s anther long cylindrical,the Robinia ambigua idahoensis’ anther short cylindrical.The Robinia pseudoacian L.’s anther epidermal cells irregular,assumed the raised undulation,the Cells surrounding the broken line;Robinia ambigua idahoensis’ anther epidermal cells irregular,more shrinkage,depression,broken line for more than neighboring cells.(2) Pollen polar axis and the proportion of the equator axis that indicated the shape of pollen,Robinia ambigua idahoensis P/E 1.42.Robinia pseudoacian L.P/E 1.56.Robinia ambigua idahoensis aperture for the short axis of the long axis of about 7.67 times that of a long- aperture,the aperture of the structure of a simple aperture.Robinia pseudoacian L. aperture for the short axis of the long axis of about 6.25 times,but also to the longaperture, the structure of aperture for a simple aperture.The pollen grains of Robinia ambigua idahoensis smaller than the Robinia pseudoacian L.,the two equatorial view of both spherical,polar view showed three round split,with all three colpus,the colpus long almost two poles,colpus near porus,wall decoration were orange peel.Robinia ambigua idahoensis porus edge of depression and more smooth,more rough edges Robinia pseudoacian L.,Robinia ambigua idahoensis porus inside edge of depression,Robinia pseudoacian L.porus edge raised undulation.Both of them had difference and common.(3) The calculation of the pollen vitality of indicators for the Robinia pseudoacian L. was 91.88 percent,Robinia ambigua idahoensis indicators for the vitality of 91.46 percent. Their fresh vitality of pollen compared with similar,indicated they had close genetic relationship.(4) Robinia ambigua idahoensis had 13 belt,Robinia pseudoacian L.had 7 belt.Their Coefficients of species similarity was 60%,this indicating they have close genetic relationship.
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