The leaf nodes of (a) Oxalis corniculata (b) O. × vanaelstii and (c) O. dillenii showing the stipules and stem hairs and for the latter two the peduncle.

 
 
  Part of: Groom Q, Meeus S, Janssens SB, Leus L, Hoste I (2021) Hybridization of Oxalis corniculata and O. dillenii in their non-native range. PhytoKeys 178: 17-30. https://doi.org/10.3897/phytokeys.178.61031