@article {van_steenis_heliotropium_1934,
	title = {Heliotropium elongatum Hofm. in Java},
	journal = {Bulletin du Jardin botanique de Buitenzorg, S{\'e}rie III},
	volume = {13},
	number = {2},
	year = {1934},
	pages = {286{\textendash}287},
	author = {van Steenis, Cornelis Gijsbert Gerrit Jan}
}
