Unnamed Bulbophyllum

This image looks the same as Zack's image node 11337 to the best of my knowledge this species has not yet been described.

I think it is from section Coelochilus. Which is very close to Section Codonosiphon. Schlechter gives the following key for this section:

1) Dorsal sepal connate (joined) with the lateral sepals.
2) Lateral sepals united in front for half of their length;

Coelochilus
Distinguished from Codonosepalum by the structure of the labellum, which is convex above and correspondingly excavated below. Appearing very concave in consequence of its revolute margins (rolled backwards and downwards). Also has one to three keels or crests at the base.
Labellum not movable, united with the almost footless column.

The sepals are reflexed mostly during the hot hours of the day, but more or less closed at night See B.alticola node 1150. also B.longilabri node 10673 which I think should be renamed B.alticola.

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