Tweeddalea

Tweeddalea
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Alismatales
Family:	Araceae
Subfamily:	Aroideae
Tribe:	Schismatoglottideae
Genus:	Tweeddalea ; S.Y.Wong & P.C.Boyce

Last updated November 21, 2025

Tweeddalea is a genus of flowering plants in the arum family, Araceae. It includes 14 species endemic to Borneo.^[1]

The genus was described by Sin Yeng Wong and Peter Charles Boyce in 2024, and includes species formerly placed in Schismatoglottis .^[2]

Species

14 species are accepted.^[1]

Tweeddalea bauensis (A.Hay & C.Lee) S.Y.Wong & P.C.Boyce
Tweeddalea bulbifera (H.Okada, Tsukaya & Y.Mori) S.Y.Wong & P.C.Boyce
Tweeddalea confinis (S.Y.Wong & P.C.Boyce) S.Y.Wong & P.C.Boyce
Tweeddalea dulosa (S.Y.Wong) S.Y.Wong & P.C.Boyce
Tweeddalea erecta (M.Hotta) S.Y.Wong & P.C.Boyce
Tweeddalea hayana (Bogner & P.C.Boyce) S.Y.Wong & P.C.Boyce
Tweeddalea iliata (S.Y.Wong & P.C.Boyce) S.Y.Wong & P.C.Boyce
Tweeddalea jitinae (S.Y.Wong) S.Y.Wong & P.C.Boyce
Tweeddalea maelii (P.C.Boyce & S.Y.Wong) S.Y.Wong & P.C.Boyce
Tweeddalea mayoana (Bogner & M.Hotta) S.Y.Wong & P.C.Boyce
Tweeddalea monoplacenta (M.Hotta) S.Y.Wong & P.C.Boyce
Tweeddalea multiflora (Ridl.) S.Y.Wong & P.C.Boyce
Tweeddalea nicolsonii (A.Hay) S.Y.Wong & P.C.Boyce
Tweeddalea roseospatha (Bogner) S.Y.Wong & P.C.Boyce

References

1 2 "Tweeddalea S.Y.Wong & P.C.Boyce". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 20 November 2025.
↑ Sin Yeng, W., & Boyce, P. C. (2024). Schismatoglottideae (Araceae) of Borneo LXXVII — Circumscribing Schismatoglottis sensu stricto, and seven new genera. Webbia, 79(2), 255–289. https://doi.org/10.36253/jopt-16015

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[powo-1] 1 2 "Tweeddalea S.Y.Wong & P.C.Boyce". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 20 November 2025.

[Wong-2] Sin Yeng, W., & Boyce, P. C. (2024). Schismatoglottideae (Araceae) of Borneo LXXVII — Circumscribing Schismatoglottis sensu stricto, and seven new genera. Webbia, 79(2), 255–289. https://doi.org/10.36253/jopt-16015

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