Yellow Sweet Clover (Melilotus officinalis (L.) Lam.) Division - Magnoliaphyta Class - Magnoliopsida Subclass - Rosidae Order - Fabales Family - Fabaceae Genus - Melilotus Not a true clover (trifolium), but part of the same family. It grows taller than real clovers. Yellow and white sweet clover are often seen growing together. Weeds Taxonomic List List by Scientific Name List by Common Name