Does anyone know of a descriptive checklist for Rain Lilies? The international registrar for small bulbs is the Dutch KAVB. I have their 1991 International Checklist for Hyacinths and Miscellaneous Bulbs and I am unaware of a more recent edition. In that reference there are only seven Zephyranthes listed. I know that many plants do not ever get registered, and even when they do the Dutch may drop them from their list if they are not in Dutch commerce. I have prepared several sectional checklists for the American Iris Society. Where appropriate I have included plants that were introduced but never registered. These comprehensive lists are helpful because, when known, they provide the parentage of hybrids, and the name of the hybridizer and where they were introduced into commerce along with a description of course and other information. I am wondering if such checklists exists for different bulb groups.