Mussaenda glabra

The Orange petals of this plant is narrower when compared  with that of  Mussaenda phillipica.

Date/Time : 20 Jul 2010, 10.44AM

Location- Place, altitude and GPS: Miao, Arunachal pradesh

Habitat- garden/ urban/wild/type: Wild, forest path,

Plant Habit-tree/shrub/climber/herb:  Shrub,

Height/length: Plant height –2-3 feet

Leaves-type/shape/size: /Green leaves – 15-20 cms/Acuminate/ Opposite ?
Orange flower, size –Approx. 1.5cms , green buds

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I think Mussaenda roxburghii Hook. f.

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Mussanda philippica is a very common introduced species to India. The plant in the picture doesnt looks like M. philippica as the petals are narrow and pointed, whereas, in M.philippica, the petals are shorter but broader and the bract has many color variations. It neither looks like M.roxburghii as it doesnt have the persistent calyx (the key character of M. roxburghii).
I will certainly look in to this later and try id the same. if … can send us a picture of flower in which the calyx is highlighted or clearly visible that would of great help to id it correctly. Please add a picture with leaf too as it is an inevitable part that carry lots of key characters.

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Mussaenda for sure, if it was ornamental I would have thought it to be Mussaenda luteola or it may be an escape too.

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This appears to be Mussaenda wallichii as per FOI, POWO specimen

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