what does Lithospermum mean?

LITHOSPERMUM as NOUN

Meaning
- annual or perennial herbaceous or shrubby plants
- cosmopolitan except Australia
Synonym(s)
- genus Lithospermum (what does genus Lithospermum mean?)
Hypernyms(s) Lithospermum is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- plant genus (what does plant genus mean?)