41. Many Proteaceae species are cultivated by the cut flower industry, especially some " Banksia " and " Protea " species. 42. They were first described by Adolf Engler in 1894, after he discovered them on plants of the family Proteaceae growing in Leipzig Botanic Gardens. 43. Some Proteaceae , such as " Banksia " and " Grevillea ", are valued by the horticulture and floriculture industries. 44. Brown does introduce one important concept, however : his division of the Proteaceae into two subfamilies based on whether or not the fruit dehisces. 45. Aulax " "'is a South African Proteaceae genus of just three species of evergreen shrubs commonly known as " featherbushes ". 46. Vexatorella " "'is a genus containing four species of flowering plant, commonly known as vexators, in the Proteaceae ecoregion. 47. Sorocephalus " "'is a genus containing 11 species of flowering plants, commonly known as powderpuffs, in the Proteaceae threatened. 48. It was given its current binomial name by Robert Brown in his 1810 " On the natural order of plants called Proteaceae ". 49. ""'Grevillea rhizomatosa " "'is a shrub of the family Proteaceae native to northern New South Wales. 50. ""'Grevillea renwickiana " "'is a shrub of the family Proteaceae native to southern New South Wales.
