Antigonon guatimalense

Antigonon guatimalense Meisn., Prodr. 14: 184 1856. (Syn: Antigonon grandiflorum B.L.Rob.; Antigonon insigne Mast.; Polygonum grandiflorum Bertol. [Illegitimate];       (=) Antigonon macrocarpum Britton & Small);

Nicaragua, Peru (I), Guatemala, Panama, Myanmar [Burma] (I), Mexico (Chiapas, Guerrero, Oaxaca, Veracruz), Venezuela (I), Colombia (I), Puerto Rico (I), Virgin Isl. (I) (St. Croix (I), St. Thomas (I)), Lesser Antilles (I) (Guadeloupe (I)) as per Catalogue of Life (Antigonon guatemalense Meisn.);

Antigonon guatimalense Meisn. seems to be cultivated in India as per Floriculture in India By Gurcharan Singh Randhawa, Amitabha Mukhopadhyay (1986) which also gives differences from Antigonon leptopus
It states that flowers of Antigonon guatimalense Meisn. are more numerous & leaves are broader than those of  Antigonon leptopus. It also states that its flowers are rose coloured & appear to be double.
I hope we are not taking both species as Antigonon leptopus.

Antigonon leptopus
Thanks ..., a lot, didn't know. Illustrations/images are easier to understand though! Recently recorded one!
The question is when India began to import and cultivate the "guatemalense" and have it ever naturalized here? The antigonon I have recorded ever comes from waste-place or beside rail-tracks.
My post on Symbiosis is of Antigonon leptopus.
As per Flora of Guatemala, the outer sepals of Antigonon guatimalense Meisn. should be broadly ovate and not cordate at the base. Further the leaf base should be abruptly decurrent at the base upon the petiole. The type specimen of A. guatimalense Meisn. can be seen here ( for confirmation. Hence to me the posted picture appears as Antigonon leptopus Hook. & Arn. only. Experts may comment.
Thanks, ..., Is Antigonon guatimalen​se cultivated or found in wild in India ?
I am still searching for an authentic herbarium sheet/reference that could tell about the existence of A. guatimalense in India.
These books mention the presence of A. insigne in India but without any information of voucher specimens. 
Hoping to get information from some eflora members.