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Three four hairy species are quite confusing and we have to follow the following keys from Flora of Peninsular India as below:

36 Leaves elliptic lanceolate or oblong, more than twice as long as broad
  38 Stipules prominent ovate lanceolate or lanceolate
    39 Stem with spreading hairs
    41 Pods slightly exserted, 15-20 seeded   …. C.hirta
    41 Pods much exserted , 20-35 seeds
      42 Leaves villous beneath; bracts often 3 lobed; pods subsessile  ….. C.mysorensis
      42 Leaves appressed pubescent beneath; bracts simple; pods shortly stalked …. C.ferruginea
38 Stipules minute or 0.
  43 Pods as long as or shorter than calyx
    44 Calyx to 0.8 cm long; upper two lobes connate except at tip; pods globose … C.linifolia
    44 Calyx to 2.5 cm long; lobes connate at base only; pods oblong …. C. calycina
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Fabaceae-Faboideae (Papilionaceae) Week : Shrubs/Herbs : Crotalaria for ID 13/11/2011 SMP7: A smaller shrub than the one uploaded before.
Vetal Tekdi Pune 3-4 feet.
Levaes simple alternate linear lanceolate..Apex acute; hirsute.
Petiole 3-4mm Subsessile.
Flowers in terminal and axillary racemes.Flower 1.5 cmBracts and bracteoles present.Sepals 5 hairy 2 above 3 below.
Pods shorter cyllindrical.


This should be Crotalaria mysorensis.
http://www.weatheredwind.org/notes/?p=496


This could be Crotalaria mysorensis.


Thanks a lot … and … for the ID.



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Fabaceae (Faboideae)Fortnight::Crotalaria mysorensis ?? ::Satara ::PKA-OCT-115 : 4 posts by 3 authors. Attachments (1)
Could this be Crotalaria mysorensis ??
Location: Satara.

efi page on Crotalaria mysorensis with images 


I think so, too.


Crotalaria mysorensis Roth



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ANNOV03/03 Crotalaria mysorensis Roth (Please validate) : 4 posts by 2 authors. Attachments (8)

Family: Fabaceae
Date: 1st November 2015
Place: Turahalli, Bangalore, Karnataka

Habit: Tall herb
Habitat: Scrub Forest

I think matches with images at Crotalaria mysorensis


… confirmed this one to be Crotalaria mysorensis Roth in a private mail.


Crotalaria mysorensis Roth



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Fabaceae-Faboideae (Papilionaceae) Week: – Crotalaria mysorensis:
Flowers of – Crotalaria mysorensis (Mysuri Tag in Marathi)

 


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Fabaceae week-40: Crotolaria mysorensis? pl confirm.


Agreed with your id


 

 

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References:
Flowers of India