Keys at Flora of China
Xylosma controversa Clos (China (Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangsu, Jiangxi, Sichuan, ?Yunnan), peninsular Malaysia, Vietnam, Assam, India (West Bengal, Assam, Arunachal Pradesh, Tripura, Meghalaya) as per Catalogue of Life)
Xylosma longifolia Clos (China (Fujian, Guangdong, Guangxi, Guizhou, Hainan, Yunnan), Laos, Vietnam, Myanmar [Burma] (Mandalay, Sagaing), Jammu & Kashmir (Poonch, Kashmir, Jammu), India (Himachal Pradesh, Indian Punjab, Haryana, Uttar Pradesh, Bihar, West Bengal, Arunachal Pradesh, Assam, Meghalaya, Manipur, Tripura, Orissa, Andhra Pradesh, Tamil Nadu), Pakistan (Murree, Pakistani Punjab), Pakistani Kashmir (Mirpur, Kotli), Thailand as per Catalogue of life)
Flora of Peninsular India with keys at species links, if any:
Species with description & keys from Flora of Pakistan (Distribution):
Xylosma controversum Clos (1300-1700 m; Nepal, Assam, W. China)
Xylosma longifolium Clos (300-1000 m; Subtropical Himalaya (Kashmir to Nepal), Assam, east to W. China)
Some species found in India with description & keys from Flora of China [Distribution other than China]:
Xylosma congesta (Loureiro) Merrill [India (rare), Japan, Korea].
Xylosma controversa Clos [India, Malaysia, Nepal, Vietnam].
Xylosma longifolia Clos [India, Laos, Nepal, Thailand, Vietnam].