;CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous please submit it to mailto:evolseq@tauex.tau.ac.il >Populus adenopoda 19 >Populus alba 20 >Populus alba var. pyramidalis 24 >Populus angustifolia 19 >Populus balsamifera 38 >Populus beijingensis 20 >Populus cathayana 20 >Populus ciliata 19 >Populus deltoides 19 >Populus deltoides subsp. monilifera 19 >Populus deltoides subsp. wislizenii 19 >Populus euphratica 19 >Populus fremontii 19 >Populus grandidentata 19 >Populus koreana 19 >Populus lasiocarpa 19 >Populus laurifolia 19 >Populus nigra 19 >Populus nigra subsp. betulifolia 19 >Populus nigra var. italica 19 >Populus pseudosimonii 20 >Populus simonii 19 >Populus suaveolens 19 >Populus tremula 38 >Populus tremula var. davidiana 22 >Populus tremula var. sieboldii 19 >Populus tremuloides 38 >Populus trichocarpa 19 >Populus × acuminata 19 >Populus × canadensis 19 >Populus × candicans 19 >Populus × canescens 19 >Populus × hopeiensis 23 >Populus × jackii 19 >Populus × parryi 19 >Populus × xiaozhuanica 19 >Populus ×canescens 19