| Vegetation on bauxitic soils in Jamaica, II R A Howard and G R Proctor (1957) Journal of the Arnold Arboretum 38: 151-169 | |
| The Malpighiaceae in the southeastern United States K R Robertson (1972) Journal of the Arnold Arboretum 53: 101-112 | |
| The Enumeratio and Selectarum of Nicolaus Von Jacquin R A Howard (1973) Journal of the Arnold Arboretum 54: 435-470 |