Figure 4 from: Du W, Wang Y, Xie D, Li E, Bai Y, Shang C, Zhang Z (2024) Phylogenomics reveal Populus gonggaensis as a hybrid between P. lasiocarpa and P. cathayana (Salicaceae). PhytoKeys 237: 161-177. https://doi.org/10.3897/phytokeys.237.103012

Figure 4 Morphological comparison of Populus gonggaensis with P. cathayana and P. lasiocarpaA male flower of P. cathayana (floral disc entire) B female flower of P. cathayana (floral disc entire, ovary glabrous) C male flower of P. lasiocarpa (floral disc parted) D female flower of P. lasiocarpa (floral disc parted, ovary pannose) E capsule of P. cathayana (floral disc persistent, pericarp glabrous) F capsule of P. lasiocarpa (floral disc deciduous, pericarp tomentose) G female flower of P. gonggaensis (floral disc parted, ovary partly pannose) H fruiting branch of P. cathayana (leaf abaxially glabrous, base rounded or subcordate) I leaf of P. lasiocarpa (base deeply cordate) J young leaf of P. lasiocarpa (abaxially tomentose) K young leaf of P. gonggaensis (abaxially glabrous, base subcordate).