Longya flower is a kind of shrub or small tree, the general height is between 3-5M. And Erythrina is a kind of tall tree, its height can reach 20 m. So, compared with the two, the shorter one is Longya
Both of them are feathery compound leaves, but the leaflets of Longya flower are rhombic ovate, with a length of 4-10cm and a width of 2.5-7cm, while the leaflets of Erythrina are wide ovate or rhombic ovate, with a length and a width of 15-30cm. Therefore, the lobule of Longya flower is smaller than that of Erythrina flower. In addition, the petiole of Erythrina usually does not have thorns, while the petiole of Longya flower sometimes has small thorns.
The flower of Longya flower is dark red, with short pedicel, and the length of inflorescence can reach more than 30cm, while the flower of Erythrina is red, and the length of inflorescence is 10-16cm. Therefore, compared with the two, the inflorescence of Longya flower is longer.
