Question: Buphthalmum and Disporopsis, are types of what?

Context paragraphs:
Disporopsis: Disporopsis is a genus of plants in the Agavoideae.  It is native to China, Indochina and the Philippines.

Buphthalmum: Buphthalmum is a genus of flowering plants in the aster family, Asteraceae.  There are 2 or 3 species.  They are native to Europe, and "B. salicifolium" is in cultivation and has been introduced elsewhere.

Supporting paragraphs: Buphthalmum Disporopsis
Answer: plants