Diversity of plant growth forms of the genera of the Calliandra clade A shrubby habit of Acaciella angustissima (Mill.) Britton & Rose var. angustissima, Texas, USA B treelet of Acaciella angustissima var. angustissima, Chiquimula, Guatemala (Hughes 1487) C shrub of Calliandra mollissima (Humb. & Bonpl. ex Willd.) Benth., Marañón Valley, Peru (Särkinen 2198) D stunted xerophytic shrublet of Afrocalliandra redacta (J.H. Ross) E.R. Souza & L.P. Queiroz, Kuboes, South Africa E stunted xerophytic shrublet of Calliandra chilensis Benth., northern Chile F small treelet of Calliandra calothyrsus Meisn., Siguatepeque, Honduras G shrub of Calliandra californica Benth., Baja California Sur, Mexico (Hughes 1546) H treelet of Calliandra fuscipila Harms, Serra do Espinhaço, Bahia, Brazil (Queiroz 15626) I, J functionally herbaceous geoxyle of Calliandra longipes Benth. arising from a stout lignotuber and resprouting and fruiting after fire in savanna woodland, Santa Cruz, Bolivia (Wood 26548) K geoxylic shrublet of Calliandra mucugeana Renvoize, arising from a stout woody underground stem and forming carpet-like thickets, Serra do Espinhaço, Bahia, Brazil (Queiroz 15540). Photo credits A Ron Stephens, iNaturalist (https://www.inaturalist.org/photos/199321699) B, C, F–K CE Hughes D Pietermier, iNaturalist (https://www.inaturalist.org/photos/152398478) E J Jiménez Castillo.