BioStor
 | Provisional List of the Plants of the Bahama Islands John Gardiner (1889) Proceedings of The Academy of Natural Sciences of Philadelphia 41: 349-407 |
 | New mites, mostly economic (Arach., Acar.) N Banks (1917) Entomological News 28: 193-199 |
 | ∑Miocene fossil woods from the Columbia basalts of Central Washington. J. Arnold Arb. 42: 165--203. U & E S Barghoorn Prakash (1961) Journal of the Arnold Arboretum 42: 165-203 |
 | Check list of Northern Territory plants G M Chippendale (1972) Proceedings of The Linnean Society of New South Wales 96: 207-267 |
 | Intraspecific Variation in Pollen-Ovule Ratios and Nectar Secretion- Preliminary Evidence of Ecotypic Adaptation Robert William Cruden (1976) Annals of the Missouri Botanical Garden 63: 277-289 |
 | Labiatae in Nicaragua F C Seymour (1978) Phytologia 39: 457-500 |