Anchusa officinalis vs anchusa

Anchusa officinalis and anchusa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Anchusa officinalis	Yes	No	No	No
anchusa	Yes	No	No	No

As nouns, anchusa is a hypernym of Anchusa officinalis; that is, anchusa is a word with a broader meaning than Anchusa officinalis:

Anchusa officinalis: perennial or biennial herb cultivated for its delicate usually blue flowers
anchusa: any of various Old World herbs of the genus Anchusa having one-sided clusters of trumpet-shaped flowers

Anchusa officinalis (noun)	anchusa (noun)
perennial or biennial herb cultivated for its delicate usually blue flowers	any of various Old World herbs of the genus Anchusa having one-sided clusters of trumpet-shaped flowers