Polyalthia

Wiya, Chattida, Damthongdee, Anissara, Chanthamrong, Kithisak, Ue-Aree, Phasit & Chaowasku, Tanawat, 2025, Uncovering five new species of Polyalthia (Annonaceae, Miliuseae) from Thailand: molecular and morphological congruence, European Journal of Taxonomy 1022, pp. 243-276 : 265-266

publication ID

https://doi.org/10.5852/ejt.2025.1022.3093

persistent identifier

https://treatment.plazi.org/id/0383878F-FF82-FF82-FF4D-F88A76206960

treatment provided by

Plazi

scientific name

Polyalthia
status

 

Key to the species of Polyalthia View in CoL in Thailand belonging to clade 2

1. Petals of both whorls subequal, (rather) thick and fleshy ................................................................. 2

– Petals of both whorls unequal, inner petals (rather) thick and fleshy, outer petals markedly smaller, thinner and less fleshy ....................................................................................................................... 3

2. Flowers sessile or subsessile; carpels 6–12(–20) per flower; ovules 2 per ovary; monocarps dark red in vivo at maturity, sessile or subsessile ............................................................................................. .................... P. debilis (Pierre) Finet & Gagnep. View in CoL ( Finet & Gagnepain 1906; basionym: Pierre 1881)

– Flowers pedicellate (pedicels 7.5–14.5 mm long); carpels 4 per flower; ovules 4–6 per ovary; monocarps yellow in vivo at maturity, stipitate (stipes 6.0–8.0 mm long) ......................................... ........................................................ P. suthepensis Wiya & Chaowasku View in CoL ( Wiya & Chaowasku 2021)

3. Carpels 1–2 per flower; ovules 3–8 per ovary ................................................ P. cambodica (Finet & Gagnep.) Wiya & Chaowasku View in CoL ( Wiya & Chaowasku 2021; basionym: Finet & Gagnepain 1906)

– Carpels ≥ 3 per flower; ovule(s) usually 1–2 per ovary .................................................................... 4

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