What does "ceanothus" mean?

Any of the genus Ceanothus of North American buckthorns.

How do you pronounce "ceanothus"?

Pronounced //ˌsiː.əˈnoʊθəs//.

/ˌsiː.əˈnoʊθəs/ noun

noun ·Rare ·Advanced level

Noun

From the genus name.