云南野生的腊肠树（Cassiafistula）、神黄豆（C.agnes）、铁刀木（C.siamea）和引种栽培的节果决明（C.nodosa）、绒果决明（C.bakeriana）、红花铁刀木（C.grandis）形态相似，常被认错。结合植株形态比较和文献资料分析，对其6个种的分类处理进行讨论。认为绒果决明、节果决明和神黄豆是同一物种的不同变异类型。%There is no obvious difference of morphology from Cassianodosa, C.bakerianaand C.agnes, and they are similar to C. fistula, C.siameaand C.grandis, therefore they always be mistaken. Based on the results of comparative analysis from C. morphology and document literature, the taxonomic problem of the 6 species was discussed. A piece of idea was put forward:C.baderiana, C. nodosaand C.agneswere variation types of one species.
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