Category:Nyssa This is the category page for Nyssa. For the treatment page see Nyssa. Nyssa is a subcategory of Nyssaceae. Pages in category "Nyssa" The following 5 pages are in this category, out of 5 total. N Nyssa aquaticaNyssa bifloraNyssa ogecheNyssa sylvaticaNyssa ursina Category: Nyssaceae