@article {20,
	title = {On the recent progress and present state of systematic botany},
	journal = {Report of the forty-fourth meeting of the British Association for the Advancement of Science; held at Belfast in August 1874},
	volume = {1874},
	year = {1875},
	pages = {27-54},
	chapter = {27},
	author = {Bentham, George}
}
