@article {20219,
	title = {The anay, a new edible-fruited relative of the avocado},
	journal = {Journal of the Washington Academy of Sciences},
	volume = {9},
	year = {1919},
	pages = {457-462},
	chapter = {457},
	url = {http://www.biodiversitylibrary.org/item/18926$\#$page/465/mode/1up},
	author = {Blake, Sidney F.}
}
@article {19936,
	title = {New or noteworthy Philippine plants, XV},
	journal = {Philippine Journal of Science},
	volume = {14},
	year = {1919},
	pages = {365-457},
	chapter = {365},
	url = {http://www.biodiversitylibrary.org/item/1124$\#$page/365/mode/1up},
	author = {Merrill, Elmer D}
}
@article {19894,
	title = {New species, varieties and combinations from the herbarium and the collections of the Arnold Arboretum},
	journal = {Journal of the Arnold Arboretum},
	volume = {1},
	year = {1919},
	pages = {121-146},
	chapter = {121},
	url = {http://www.biodiversitylibrary.org/item/33583$\#$page/125/mode/1up},
	author = {Rehder, Alfred}
}
@article {19848,
	title = {Notes on the Flora of Sumatra},
	journal = {Philippine Journal of Science},
	volume = {14},
	year = {1919},
	pages = {239-250},
	chapter = {239},
	url = {http://www.biodiversitylibrary.org/item/1124$\#$page/241/mode/1up},
	author = {Merrill, Elmer D}
}
@article {18403,
	title = {Lauracearum paraguariensium conspectus},
	journal = {Annuaire du Conservatoire \& du Jardin Botaniques de Gen{\`e}ve},
	volume = {21},
	year = {1919},
	pages = {73-97},
	author = {Hassler, {\'E}mile}
}
