Lespedeza sericea vs lespedeza

Lespedeza sericea and lespedeza both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lespedeza sericea	Yes	No	No	No
lespedeza	Yes	No	No	No

As nouns, lespedeza is a hypernym of Lespedeza sericea; that is, lespedeza is a word with a broader meaning than Lespedeza sericea:

Lespedeza sericea: perennial widely planted as for forage and as hay crop especially on poor land
lespedeza: shrubby or herbaceous plants widely used for forage, soil improvement, and especially hay in southern United States

Other hypernyms of Lespedeza sericea include bush clover.

Lespedeza sericea (noun)	lespedeza (noun)
perennial widely planted as for forage and as hay crop especially on poor land	shrubby or herbaceous plants widely used for forage, soil improvement, and especially hay in southern United States