Four new Cryptocoryne (Araceae) from Sumatera, Indonesia: a new variety and three interspecific natural hybrids
Suwidji WONGSO1, Ni Putu Sri ASIH, Jan D. BASTMEIJER, Karen Rysbjerg JENSEN, William REICHERT, Marian ĜRGAARD, Niels JACOBSEN
(Manuscript received 8 December 2018; accepted 8 July 2019; online published 26 July 2019)
ABSTRACT: A new diploid variety, Cryptocoryne cordata var. wellyi from the Riau Province in Sumatera is described. Three interspecific natural hybrids are also described: the diploid C. ×ardyi, the triploid C. ×jambiensis and the tetraploid C. ×zukalii nothovar. sumateraensis, of which the tetraploid hybrid involves C. cordata var. diderici as one parent. The hybrids are sterile but propagate vegetatively, forming large stands. A key to the Cryptocoryne taxa of Sumatera is provided.