BioStor
 | Materials toward a monograph of the genus Verbena. II H N Moldenke (1961) Phytologia 8: 108-152 |
 | Materials toward a monograph of the genus Lippia. V H N Moldenke (1965) Phytologia 12: 252-312 |
 | Additional notes on the genus Lippia. I H N Moldenke (1966) Phytologia 13: 343-368 |
 | A Fifth Summary of the Verbenaceae, Avicenniaceae, Stilbaceae, Dicrastylidaceae , Symphoremaceae, Nyctanthaceae, and Eriocaulaceae of the world as to valid taxa , geographic distribution, and synonomy. Supplement 7 H N Moldenke (1977) Phytologia 36: 28-48 |
 | Additional notes on the genus Lippia. XI H N Moldenke (1978) Phytologia 39: 434-456 |
 | Additional notes on the genus Lippia. XVI H N Moldenke (1981) Phytologia 48: 151-185 |
 | Additional notes on the genus Lippia. XX H N Moldenke (1985) Phytologia 56: 465-488 |
 | How Rich is the Flora of Brazilian Cerrados? A A J F Castro, F R Martins et al. (1999) Annals of the Missouri Botanical Garden 86: 192-224 |