Polyura geminata

Polyura geminata Hook. f., Hooker’s Icon. Pl. 11: t. 1049 1868. (Syn: Ophiorrhiza geminata Wall. ex G.Don);
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Bhutan to Assam: Assam, East Himalaya as per POWO;

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Id-Hetb(2) – efloraofindia | Google Groups: 4 images.
I have photographed this also from marshy habitat. Plz help me to identify the sp.Date/Time- 31/8/10- 2:15PM
Location- Place, Altitude, GPS- Kokrajhar, Assam, Alt 90m
Habitat- Garden/ Urban/ Wild/ Type- Wild Type
Plant Habit- Tree/ Shrub/ Climber/ Herb- Small Herb growing in the marshy habitat
Height/Length- 10-23 cm
Leaves Type/ Shape/ Size- 2.5-5.5x 2-3.5cm
Inflorescence Type/ Size- 3-4cm
Flowers Size/ Colour/ Calyx/ Bracts- White

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May be rubiaceae, Ophiorhiza?

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Ophiorrhiza tingens threated in Assam

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This is Polyura geminata Hook. f. (Rubiaceae).
Scarcely distributed in NE India. Also reported from Bhutan, China and Vietnam.

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Rubiaceae Week: Sharing Rubiaceae Photo from Arunachal Pradesh: Mixed thread: 1 correct image as above.
I wish to share some Rubiaceae pics from Arunachal Pradesh.

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References:

POWO  The Plant List  EOL (Specimen)  Plant Illustrations