| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Acanthaceae to Myricaceae: Water Willows to Wax Myrtles | 978-0-8093-2790-4 | 2008 | |
| Cyperaceae: Sedges | 978-0-8093-2628-0 | 2005 | |
| Flowering Plants: Smartweeds to Hazelnuts | 978-0-8093-2926-7 | 2009 | Paul M. Thomson Jr. |
| Grasses: Bromus to Paspalum, Second Edition | 978-0-8093-2359-3 | 2002 | |
| Nelumbonaceae to Vitaceae: Water Lotuses to Grapes | 978-0-8093-2894-9 | 2010 | |
| Sedges: Carex | 978-0-8093-3024-9 | 2011 | |
| Sedges: Carex | 978-0-8093-2074-5 | 1999 | |
| Sedges: Cyperus to Scleria | 978-0-8093-2358-6 | 2001 | |
| The Flowering Plants: Flowering Rush to Rushes | 978-0-8093-2687-7 | 2006 | |
| Vascular Flora of Illinois | 978-0-8093-2421-7 | 2002 | |
E.H. · E R · E. Robert · P.E. · P. H. · P R · P. Robert · Professor Emeritus · R. H. · Robert H.