International Code of Botanical Nomenclature 
(Saint Louis Code), Electronic version 
APPENDIX I
NAMES OF HYBRIDS
Article H.1
H.1.1.  Hybridity is indicated by the use of the multiplication sign × or by the addition of the prefix
"notho-" to the term denoting the rank of the taxon.
  Title |
 Subject index |  Index to scientific names
 |  Contact |  Regnum Vegetabile
(c) by  International Association for Plant Taxonomy. This page last updated Feb. 12, 2001.