Pelargonium grandiflorum (Cultivated)

Pelargonium grandiflorum (Andrews) Willd., Sp. pl. 3(1):674. 1800 (Syn: Eumorpha grandiflora (Andr.) Eckl. & Zeyh.; Geraniospermum grandiflorum (Andr.) Kuntze; (≡) Geranium grandiflorum Andrews (basionym)); 

South Africa (W-Cape Prov.), Bolivia (c), Spain (c) as per Catalogue of Life;
 
 

https://08511630493324166816.googlegroups.com/attach/b67544323a63e4cc/Pelargonium-grandiflorum-aristo-DSC01058-California-3.jpg?part=0.1&view=1&vt=ANaJVrF4f6Gu-AxDpoUbY0f4ZBGwOkVGL4OCDTfaZq4qfsJdLcgR6eSCoVLYLBbbFR3kPT0CUY9SDrtTfBBNes-gAtZ43GsdciVSWBjdEN6Sf3jJyj_3gRw
Pelargonium x grandiflorum (Andrews) Willd., Sp. pl. 3(1):674. 1800 'Aristo'
Common name: Large-flowered pelargonium
Shrubby perennial with large flowers has a number of cultivars in variety of colour under the name 'Aristo'
Photographed from California

https://groups.google.com/group/indiantreepix/attach/f5accaecee6d/TQ-Manipur-04c.jpg?part=0.1&authuser=0&view=1
 
TQ-Manipur-04 Unidentied garden flower : 6 posts by 3 authors. Attachments (5)
I am unable to identify this garden flower photographed from Manipur.
Any help will be appreciated.

I guess it is Pelargonium grandiflorum hybrid ! 

Thank you for the lead ... I had explored Pelargonium earlier, but could not understand the large anthers of this plant. Came across this nice article which says that Pelargoniums are divided into 5 groups:
My plant appears to belong to the Regal Pelargonium group. The closest I could get to was Regal Pelargonium 'Kimono':
 
 
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