Catunaregam spinosa (Thunb.) Tirveng. (Pakistan to S. China and W. Malesia: Bangladesh, Cambodia, China South-Central, China Southeast, East Himalaya, Hainan, India, Jawa, Laos, Malaya, Myanmar, Pakistan, Sri Lanka, Taiwan, Thailand, Vietnam, West Himalaya as per POWO)

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BSI Flora of India Checklist (Distribution):

Name Distribution
Catunaregam longispina Andaman & Nicobar Islands, Andhra Pradesh, Karnataka, Madhya Pradesh, Maharashtra, Mizoram, Tamil Nadu, Uttarakhand, West Bengal
Catunaregam nutans DOUBTFUL TAXA
Catunaregam oocarpa DOUBTFUL TAXA
Catunaregam spinosa Andhra Pradesh, Jammu, Kerala, Madhya Pradesh, Maharashtra, Odisha, Sikkim, Tamil Nadu
Catunaregam stipulosa DOUBTFUL TAXA
Catunaregam tomentosa Endemic to India: Karnataka, Kerala, Tamil Nadu (No distribution shown in India in POWO and CoL)
Catunaregam torulosa Endemic to India: Kerala. Tamil Nadu

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Flora of Peninsular India with keys at species links, if any:
Catunaregam rugulosa (? Oxyceros rugulosus (Thwaites) Tirveng. syn. Randia rugulosa (Thwaites) Bedd.)
Catunaregam spinosa
Catunaregam tomentosa (Endemic to India: Karnataka, Kerala, Tamil Nadu (No distribution shown in India in POWO and CoL)
Catunaregam torulosa
Randia longispina (syn. of Catunaregam longispina (Link) Tirveng.)


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Species with description from Flora of Pakistan (Distribution):
Catunaregam spinosa (Thunb.) Tirvengadum (Ceylon, India, Pakistan (Rawalpindi, eastward Poonch), also occurs in east, central and possibly South Africa)


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Species with description in Flora of China (Distribution):
Catunaregam spinosa (Thunberg) Tirvengadum (Thickets or forests at streamsides, on hills or mountain slopes, or in valleys or fields; near sea level to 1600 m. Fujian, Guangdong, Guangxi, Hainan, Taiwan, Yunnan [Cambodia, India, Indonesia, Kashmir, Laos, Malaysia, Myanmar, Nepal, Pakistan, Sri Lanka, Thailand, Vietnam; Africa, Madagascar])