BioStor
 | XVII.—On early Contributions to the Flora of Ireland; with Remarks on Mr. Mackay's Flora Hibernica (1840) Annals And Magazine of Natural History 6: 126-135 |
 | Bibliographical Notices (1843) Annals And Magazine of Natural History 11: 295-302 |
 | Provisional List of the Plants of the Bahama Islands John Gardiner (1889) Proceedings of The Academy of Natural Sciences of Philadelphia 41: 349-407 |
 | The genera of Polygonaceae in the southeastern United States S A Graham and Jr Wood C. E. (1965) Journal of the Arnold Arboretum 46: 91-121 |
 | Phytogeographical Relationships of the Genera of Angiosperms in the Fanjing Shan Mountain Range, Northeastern Guizhou, China Tsun-Shen Ying, David E Boufford and Yuling Tu (1991) Annals of the Missouri Botanical Garden 78: 338-358 |