@article {20248,
	title = {Taxonomic records concerning American spermatophytes 2. New or otherwise noteworthy plants},
	journal = {Contributions from the Gray Herbarium of Harvard University},
	volume = {70},
	year = {1924},
	pages = {69-87},
	chapter = {69},
	url = {http://www.biodiversitylibrary.org/item/123406$\#$page/68/mode/1up},
	author = {Johnston, Ivan M.}
}
@article {20247,
	title = {Descriptions of new spermatophytes, chiefly from the collections of Prof. M. E. Peck in British Honduras},
	journal = { Contributions from the Gray Herbarium of Harvard University},
	volume = {51},
	year = {1917},
	month = {09/1917},
	pages = {59-106},
	chapter = {59},
	url = {http://www.biodiversitylibrary.org/item/123407$\#$page/121/mode/1up},
	author = {Blake, Sidney F.}
}
