@article {20372,
	title = {Plantae Centrali-Americanae, II},
	journal = {Ceiba},
	volume = {1},
	year = {1951},
	pages = {231-254},
	chapter = {231},
	url = {https://revistas.zamorano.edu/index.php/CEIBA/article/view/793/749},
	author = {Standley, Paul C. and Williams, Louis O}
}
@article {20266,
	title = {Flora of Costa Rica, Part II},
	journal = {Field Museum of Natural History, Botanical series},
	volume = {18},
	year = {1937},
	month = {10/1937},
	pages = {401-780},
	chapter = {401},
	url = {http://www.biodiversitylibrary.org/item/19747$\#$page/9/mode/1up},
	author = {Standley, Paul C.}
}
@article {20253,
	title = {Studies of Central American plants - V},
	journal = {Field Museum of Natural History, Botanical series},
	volume = {23},
	year = {1944},
	month = {03/1944},
	pages = {113-150},
	chapter = {113},
	url = {http://www.biodiversitylibrary.org/item/19682$\#$page/11/mode/1up},
	author = {Standley, Paul C. and Steyermark, Julian A.}
}
