Falconeria is a monotypic plant genus in the family Euphorbiaceae, first described as a genus in 1839.Royle, John Forbes. 1839. Illustrations of the botany and other branches of the natural history of the Himalayan Mountains :and of the flora of Cashmere 354. descriptionis in Latin, commentary in EnglishTropicos Falconeria Royle The genus is sometimes included within the genus Sapium. The sole species is Falconeria insignis. The plant is found from India, Nepal, Bangladesh, and Sri Lanka to Indochina, China (Hainan, Sichuan, Yunnan), Thailand and Peninsular Malaysia.Kew World Checklist of Selected Plant FamiliesFlora of China Vol. 11 Page 283 异序乌桕属 yi xu wu jiu shu Falconeria Royle, Ill. Bot. Himal. Mts. 354. 1839.
The same genus name, Falconeria, was applied in 1883 to another plant in the Plantaginaceae. Thus was created an illegitimate homonym, unacceptable under the rules of nomenclature. The only species name ever created in this homonymic genus was Falconeria himalaica Hook.f., now renamed Wulfenia himalaica (Hook.f.) Pennell.Tropicos, search for name FalconeriaThe Plant List, Falconeria himalaica Hook.f.
References
http://www.theplantlist.org/tpl1.1/record/tro-12805759 http://pubs.acs.org/doi/abs/10.1021/np300004y https://www.gbif.org/species/3063740/