16-001014-02A (Ultimate SCMMP)

                                    African Cape waterlily (Nymphaea caerulea)

                                    Distinguished by generally large round leaf
                                    blades to 50 cm wide with irregularly spaced
                                    teeth around a wavy margin. Showy blue to
                                    purple flowers with pointed petal tips.
                                    Flowers are located on robust erect stalks
                                    above the water. Can be misidentified as
                                    Nymphaea gigantea, which is an endangered
                                    species.

Photo: Jason Sonneman, DesignFlow
                                    Flowering: December–April

                                    Reproduction: Germinates from seed, but
                                    predominantly reproduces vegetatively from
                                    the stolons.

                                    Control: Physical removal, chemical control



                                    Yellow waterlily (Nymphaea mexicana)

                                    Distinguished by broad elliptic leaves to 25
                                    cm wide with smooth and wavy leaf margins.
                                    Distinguished by yellow flowers with pointed
                                    petal tips and vertical, knobbly rhizomes.
                                    Yellow waterlily has the potential to cover
                                    the water surface and limit the growth of
                                    other plants, which in turn reduces the habitat
                                    for micro-organism, invertebrate and fish.

                                    Note: the widespread and common African
                                    Cape waterliliy Nymphaea caerulea, with
                                    showy blue flower, can be misidentified as
                                    N. gigantea, which is an endangered species.

                                    Flowering: October–March, but will vary
                                    with location

                                    Reproduction: Germinates from seed, but
                                    predominantly reproduces vegetatively from
                                    the stolons.
Photo: Jason Sonneman, DesignFlow
                                    Control: Physical removal, chemical control




                                              Maintaining Vegetated Stormwater Assets Version 1   71