Annals of Botany Nodulation in the crotalarioid Lotononis s.l. clade (Research in Context) Comparatively few studies have examined nodulation or rhizobial association in the basal legume tribe Crotalarieae. Within the Lotononis s. l. clade, Ardley et al. characterize the rhizobia associated with Listia... botanyoneSeptember 16, 2013