Lobelia cleistogamoides (Campanulaceae, subfamily Lobelioideae, Lobelia sect. Holopogon), a new species related to L. heterophylla from Western Australia and South Australia

Lobelia cleistogamoides N.G.Walsh & Albr., a member of the L. heterophylla Labill. complex, is described. The new species is known to occur from near Mullewa to just east of Esperance in Western Australia, with a disjunct occurrence on the Eyre Peninsula in South Australia. It differs from L. heterophylla s. str. principally in its much smaller flowers and has been known previously as Lobelia sp. small flowers (K.F. Kenneally 7705). Current collection information precludes an accurate assessment of its conservation status.