Lupinus texensis vs lupin

Lupinus texensis and lupin both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lupinus texensis	Yes	No	No	No
lupin	Yes	No	No	No

As nouns, lupin is a hypernym of Lupinus texensis; that is, lupin is a word with a broader meaning than Lupinus texensis:

Lupinus texensis: closely resembles Lupinus subcarnosus; southwestern United States (Texas)
lupin: any plant of the genus Lupinus; bearing erect spikes of usually purplish-blue flowers

Other hypernyms of Lupinus texensis include lupine.

Lupinus texensis (noun)	lupin (noun)
closely resembles Lupinus subcarnosus; southwestern United States (Texas)	any plant of the genus Lupinus; bearing erect spikes of usually purplish-blue flowers