BioStor
 | Systematics of Central American Heliconia (Heliconiaceae) with pendent inflorescences W J Kress (1984) Journal of the Arnold Arboretum 65: 429-532 |
 | The Zingiberales (Cannaceae, Marantaceae, and Zingiberaceae) in the southeastern United States G K Rogers (1984) Journal of the Arnold Arboretum 65: 5-55 |
 | The Phylogeny and Classification of the Zingiberales W John Kress (1990) Annals of the Missouri Botanical Garden 77: 698-721 |
 | A New Species of Costus (Costoideae, Zingiberaceae) from Veracruz, Mexico Abisai Garcia-Mendoza (1991) Annals of the Missouri Botanical Garden 78: 1081-1084 |