BioStor
 | The known geographic distribution of the members of the Verbenaceae, Avicenniaceae, Stilbaceae, Symphoremaceae, and Eriocaulaceae. Supplement 5 H N Moldenke (1951) Phytologia 3: 448-468 |
 | Additional notes on the genus Citharexylum. XIX H N Moldenke (1981) Phytologia 48: 292-312 |