SRP176400 PRJNA513250 Transcriptome analysis during floral organ development provides insight into stamen petaloidy in Lagerstroemia speciosa Lagerstroemia speciosa has been abundantly applied in urban landscapes with high ornamental value. For the first time we discovered a double-flower variant with all the stamens petaloid. Here are the transcriptome datasets of single- and double-flower buds at three stamen developing stages in L. speciosa.