Broussaisia

Broussaisia arguta, the kanawao, is a species of perennial flowering plant in the Hydrangea family, Hydrangeaceae, that is endemic to Hawaiʻi. It is the only species in the monotypic genus Broussaisia.^[2]

Kanawao
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Cornales
Family:	Hydrangeaceae
Subfamily:	Hydrangeoideae
Tribe:	Hydrangeeae
Genus:	Broussaisia Gaud.
Species:	B. arguta
Binomial name
Broussaisia arguta Gaud.[1]

Staminate (male) flowers

Kanawao is a widespread species occurring in mesic and wet forests on all of the main Hawaiian Islands. It is a dioecious, evergreen plant that either grows as a 1.5–3-metre (4.9–9.8 ft) shrub or a 6-metre (20 ft) tree. The obovate leaves are 10–25 centimetres (3.9–9.8 in) long and 4–9 centimetres (1.6–3.5 in) wide with finely serrated margins.^[2]

Relationship to other Organisms

The Orthotylus broussaisia (O. broussaisiae) from Kauai feeds on Broussaisia arguta. Although there has been extensive research on Broussaisia arguta, only the Orthotylus broussaisiae species has been found feeding on it.^[3]