A simple key from Dr. Almeida’s flora Vol IV-B pg 350:
1. Unarmed; leaves 2.5-8cm long —- Flueggea obovata (now Flueggea virosa)
2. Spinous; leaves rarely exceeding 2.5 cm long — Flueggea leucopyrus
As per efi thread :
Duthie in his document Flora of Upper Gangetic Plains has also mentioned these two species and differentiate them as-
Unarmed; leaves 1-3 inches long ……. F. microcarpa (now Flueggea virosa)
Spinous; leaves rarely exceeding 1 inch long ……. F.leucopyrus
He has mentioned its (F.microcarpa) distribution in Bengal also.
Spines in F.leucopyrus are not distributed all along the branch but slender angular branchlets ends in a sharp spine;
As per efi thread:
F.virosa has small prickles, but it not prominent in its life cycle, prominent in leucopyrus.
Flueggea virosa (Roxb. ex Willd.) Royle (Africa, Tropical & Subtropical Asia: Andaman Is., Angola, Assam, Bangladesh, Benin, Borneo, Botswana, Burkina, Burundi, Cambodia, Cameroon, Caprivi Strip, Central African Repu, Chad, China North-Central, China South-Central, China Southeast, Comoros, Djibouti, Egypt, Eritrea, Ethiopia, Gambia, Ghana, Guinea, Guinea-Bissau, India, Ivory Coast, Jawa, Kenya, KwaZulu-Natal, Lesser Sunda Is., Madagascar, Malawi, Malaya, Mali, Maluku, Mauritania, Mozambique, Mozambique Channel I, Myanmar, Namibia, Nicobar Is., Nigeria, Northern Provinces, Oman, Philippines, Rwanda, Réunion, Saudi Arabia, Senegal, Sierra Leone, Socotra, Somalia, South China Sea, Sri Lanka, Sudan, Sulawesi, Sumatera, Swaziland, Taiwan, Tanzania, Thailand, Togo, Uganda, West Himalaya, Yemen, Zambia, Zaïre, Zimbabwe as per POWO)
Species as per Flora of India Vol 23 (Editors N. P. Balakrishnan, T. Chakrabarty, M. Sanjappa, P. Lakshminarsimhan & P. Singh- by Botanical Survey of India (2012)):
Flueggea leucopyrus Willd. (Andhra Pradesh, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Rajasthan, Tamil Nadu)
Flueggea virosa (Roxb. ex Willd.) Voigt (Throughout India)
Species with description & keys in Flora of Pakistan :
Flueggea leucopyrus Willd. (According to Webster (unpublished TS), only in S. India and Sri Lanka; according to Airy Shaw (Kew Bull. 26(2): 340. 1972), also in Burma and Thailand; according to M.G. Gilbert (pers. comm.), also in Ethiopia, Somalia, Socotra and S. Arabia, Pakistan)
Flueggea virosa (Roth. ex Willd.) Voigt
Flueggea virosa subsp. virosa (Throughout Tropical Africa and extending through Asia to Japan and Timor.)
Floristic Diversity of Assam: Study of Pabitora Wildlife Sanctuary By Bora, Yogendra Kumar (2003)-
Flueggea virosa with description.
Flora of Madhya Pradesh: Chhatarpur and Damoh By G. P. Roy, B. K. Shukla, Bhaskar Datt (1992)-
Flueggea virosa with description.
Encyclopaedia of World Medicinal Plants, Volume 1 By T. Pullaiah (2006)-
Flueggea leucopyrus with description & medicinal uses)
I have updated eFI (efloraofindia) page on Flueggea
Attempts have been made to incorporate most of the species available in India & nearby areas with details & keys directly or through links as far as possible. It’s quite possible that there may be some discrepancy in the accepted names & synonyms taken from other links.
Species discussed so far in efloraofindia are given at the bottom of the page in the form of links against Subpages. On clicking them one can see all the details.
Any comments are welcome.
Please follow Flora of India Volume 23.