Typhonium dongnaiense(Araceae), a New Species from Vietnam

Chemical composition and antibacterial activities of ethanolic extract from rhizomes and aerial parts of Typhonium lineare Hett. and V.D. Nguyen (Araceae)

“…& V. D. Nguyen was described for the first time by Hetterscheid and Nguyen in 2001 [HETTERSCHEID et al, 2001] which the type specimens were collected in Tuy Phong District, Binh Thuan Province, Vietnam. Recently, Van [VAN et al, 2017] who was the first author of this paper, also recorded the new distribution of this species in Binh Chau-Phuoc Buu Nature Reserve, Ba Ria-Vung Tau Province. To date, T. lineare is a rare species and has only been found from Bình Thuan and Ba Ria-Vung Tau Province, southern Vietnam.…”

“…Among them, the ethanolic extract exhibited strong antibacterial activity against S. typhimurium (12.8 ± 0.8 mm), following E. coli (11.7 ± 1.5 mm), B. cereus (11.2 ± 1.0 mm), S. enteritidis (10.7 ± 1.2 mm) and P. aeruginosa (9.8 ± 0.3 mm). T. lineare is a rare and endemic to Vietnam which was only dicovered in Ninh Thuan and Ba Ria-Vung Tau Province [HETTERSCHEID et al, 2001;VAN et al, 2017] . The present study, therefore, was firstly research showing phytochemical composition and antibacterial activity of ethanolic extract of T. lineare.…”

“…Vietnam is a biodiversity hot spot for the Araceae family in which 17 Typhonium species have been recorded [PHAM, 2000;NGUYEN et al, 2004;NGUYEN, 2005;NGUYEN, 2008;NGUYEN et al, 2010;HETTERSCHEID et al, 2001;LUU et al, 2017;VAN et al, 2017] . Typhonium lineare Hett.…”

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.…”