Eastern Europe, Western Asia
North America, Mexico, Central America, South America
Common Cattail, Southern Cattail, Dwarf Bulrush
Neck, Really Big Hybrid, Waltham
21,22
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24