Argostemma parvifolium var. involucratum (Malaysia)

Argostemma parvifolium Benn., Pl. Jav. Rar. 1: 96 (1838) (syn: Argostemma uniflorum var. minus Boerl. );
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Peninsula Malaysia to Sumatera: Malaya, Sumatera as per POWO;
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Malaysia – Wild Flower for ID – 230814 – RK1 : 6 posts by 3 authors. Attachments (5).

1st 3 pics of one plant, no. 952 & no.966 – each a different plant [should these be in a separate post?] –

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Argostemma sp. (Rubiaceae)

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Thank you, …. Googled Argostemma & found this : link

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Could it be A. stellaris ? [I’m a lay botanist !]

Thanks for writing back. Identification of Argostemma is little tricky…
I tried to check it with Flora of Thailand where it goes close to A. dispar…..but I am not sure.
Pl check the characters carefully with relevant Flora.

Argostemma parvifolium Benn.

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Yes, it appears close to images of Argostemma parvifolium Benn. at iNaturalist and Biolib

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References:
POWO  GBIF (High resolution specimens)  iNaturalist  Biolib