New species, possible hybrids and intergrades in Australian Nymphaea (Nymphaeaceae) with a key to all species

Abstract

Nymphaea Iukei and N. noelae, both Nymphaeaceae subgenus Confluentes, are described from the Kimberley region of Western Australia and Cape York region of Queensland respectively. The new combination and status of Nymphaea kimberleyensis is provided for Nymphaea immutabilis subsp. kimberleyensis from Western Australia. From Central Eastern Queensland Nymphaea jacobsii (subgenus Anecphya), with two subspecies, and N. vaporalis are described as new taxa. The potential hybrid origin of N. kimberleyensis and N. vaporalis is discussed, as is the presence of an intergrade complex. Another hybrid, N. jacobsii x N. violácea, is described but not named. A key is provided for the native and naturalised species of Nymphaea in Australia. © 2011 Royal Botanic Gardens and Domain Trust.