Lespedeza striata vs lespedeza

Lespedeza striata and lespedeza both are nouns.

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

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

Lespedeza striata: an annual of tropical Asia naturalized in United States
lespedeza: shrubby or herbaceous plants widely used for forage, soil improvement, and especially hay in southern United States

Other hypernyms of Lespedeza striata include bush clover.

Lespedeza striata (noun)	lespedeza (noun)
an annual of tropical Asia naturalized in United States	shrubby or herbaceous plants widely used for forage, soil improvement, and especially hay in southern United States