ID'd for me by Matt Buckingham on Facebook's Texas Flora group.
Cascading light purple flowers, compound leaves and fuzzy seedpods
Observed on the tour of Chattahoochee Nature Center -- amazing organization!
Broussonetia papyrifera (Moraceae). Voucher: Swenson et al. 1257. Vietnam, Lao Cai Province, Van Ban Nature Reserve, east slope of the Hoang Lien Son Range, east of road QL 279, alt. 760 masl (22.04556 103.97917). Swedish Museum of Natural History expedition to Vietnam 2013, sponsored by National Geographic Global Exploration Fund Northern Europe.
Fairly large, spreading tree alongside parking lot in commercial/residential area just south of US-1.
構樹 Paper Mulberry (Broussonetia papyrifera)
ID Credit : Kimmy Li @ hkcww.org
Reference :
http://herbarium.gov.hk/subpages.aspx?id=3039
20170215 : Got removed due to construction in the area.