Indigofera atropurpurea


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https://groups.google.com/group/indiantreepix/attach/5aa0e52332b57/DSC_0956%20copy.JPG?part=0.1&authuser=0&view=1
Indigofera atropurpurea Buch.-Ham. ex Hornem. : 9 posts by 2 authors. Attachments (3)-2, 2 & 3 mb. 
Location:  Harthok, Palpa
Date: 25 September 2019
Elevation:1400 m.
Habit : Wild
Nepali Names: साखिनु Saakhinu / नीर Neer / सखिनिया Sakhiniyaa
Attachments (2) - 2 & 4 mb.
Attachments (2)-1 & 2 mb
Attachments (1) - 6 mb. 
Keys in Flora of Pakistan are confusing me:
28 (26)Flower shorter than the subtending bract Indigofera atropurpurea
+Flower longer than the subtending bract (29)
    
29 (28)Calyx teeth deltoid, not exceeding the cup Indigofera hamiltonii
+Calyx teeth lanceolate, exceeding the cup Indigofera himalayensis

Here flower appears to be longer than the subtending bract.
Indigofera hamiltonii Grah. ex Duthie & Prain (March April)
Indigofera atropurpurea Buch.-Ham.ex Horn. (August- Sept.)
Flora of China gives the following keys:
40 (39)Leaves 3- or 5(-11)-foliolate, to 2.2 × 1.2 cm; racemes much longer than leaves. 24 I. hamiltonii
+Leaves (7-)11-19(or 21)-foliolate, to 6.5 × 2.5 cm; racemes equal to slightly longer than leaves. 25 I. atropurpurea
In view, we may take ... post as Indigofera atropurpurea
Interestingly, Checklist of Nepal gives Indigofera hamiltonii Graham ex Duthie & Prain as a syn. of Indigofera atropurpurea Buch.-Ham. ex Hornem.
So what do you think ...? If that is correct then we need to review earlier posts I guess. I am at Kalimpong for a few weeks as such I shall check once again when I am back.

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