A new species and a new record of Typhonium (Araceae) from southern Vietnam

Abstract

Typhonium vietnamense is described as a new species from Vietnam. It is most similar to Typhonium varians but differs in a combination of leafy and floral characters. In addition, T. khonkaenensis is newly recorded for Vietnam, leading to exclusion of T. violifolium from the national flora. An updated key to all known species of Typhonium in Vietnam is given.

Typhonium kbangense, a new species of Araceae (Aroidea–Areae) from Central Vietnam

“…They are distributed from East Himalaya throughout tropical and subtropical Asia as far east as New Guinea and Australia (Mayo et al 1997, Govaerts et al 2002, Hetterscheid 2013, eMonocot Team 2021), though molecular studies indicate that nearly all the hitherto recognised New Guinea and Australian Typhonium species are in a distinct clade for which the generic name Lazarum A. Hay is available (Cusimano et al 2010). Recently, since 2000 to now, 36 new species have been described from Indochina including Thailand (Hetterscheid and Boyce 2000, Hetterscheid and Nguyen 2001, Hetterscheid et al 2001, Nguyen 2008, 2017, Nguyen and Croat 2010, Galloway 2012, 2015, Hetterscheid and Sookchaloem 2012, Hetterscheid 2013, Luu et al 2017, Sookchaloem and Maneeanakekul 2017, Van et al 2017, 2021, Nguyen et al 2021). Among of them, 11 species have been discovered in central and southern Vietnam.…”