BioStor
 | William Jack's genera and species of Malaysian plants Elmer Merrill Journal of the Arnold Arboretum 33: 199-251 |
 | XXI. Remarks on Hypnum recognitum, and on several new Species of Roscoea William George Maton and James Edward Smith (1822) Transactions of The Linnean Society of London 13: 459-464 |
 | XIII.—Observations on the Structure of the Pollen Granule, considered principally in reference to its eligibility as a means of Classification Arthur Hill Hassall (1841) Annals And Magazine of Natural History 8: 92-108 |
 | The Zingiberales (Cannaceae, Marantaceae, and Zingiberaceae) in the southeastern United States G K Rogers (1984) Journal of the Arnold Arboretum 65: 5-55 |