Brassia is a genus of orchids classified in the Oncidiinae subtribe.
 It is native to Mexico, Central America, the West Indies, and northern South America, with one species ("B. caudata") extending into Florida.
Comesperma is a genus of shrubs, herbs and lianas in the family Polygalaceae.
 The genus is endemic to Australia.
 It was defined by the French botanist Jacques Labillardière in his 1806 work "Novae Hollandiae Plantarum Specimen".
 The genus name is derived from the Ancient Greek words "come" ("hair") and "sperma" ("seed"), and relates to the seeds bearing tufts of hair.
 The genus is distributed over southern Australia, particularly in the southwest of Western Australia, where 19 species are found.
 24 species have been described.

Question: how is Brassia and Comesperma connected?
Answer: genus