Asterella tenella (L.) P. Beauv.  

Family: Aytoniaceae

[Fimbraria brachypus Mont. ex Gottsche, Lindenb. et Nees, moreFimbraria mollis Taylor, Fimbraria nigripes Bisch. ex Lehm. et Lindenb., Fimbraria tenella (L.) Nees, Fimbraria tenella var. porphyrocephala Nees, Fimbraria tenella var. tenella autonym, Hypenantron molle (Taylor) Trevis., Hypenantron tenellum (L.) Trevis., Hypenantron tenellum var. porphyrocephalum Schiffn., Hypenantron tenellum var. tenellum autonym]