Native species

Hi, We are working on a project in Singapore. We had provided native species in our project and to document compliance for this credit we included a list of native species from the Country’s national parks website as a supporting document. But since most of the species in the website says “Native to Southeast Asia” and not specifically as “Native to Singapore”; GBCI has requested us to get the list of native species endorsed by a registered landscape architect for compliance. But we don’t have any registered landscape architect in our project.is there any other way to demonstrate compliance for this credit?