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

Question: Buphthalmum and Disporopsis, are types of what?
Answer: plants