Keys available at

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Spermacoce latifolia Aubl. (Mexico to Tropical America: Argentina Northeast, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Central American Pac, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Leeward Is., Mexico Gulf, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Paraguay, Peru, Suriname, Trinidad-Tobago, Venezuela; Introduced into: Andaman Is., Assam, Bangladesh, Borneo, Cambodia, Cameroon, Caroline Is., China South-Central, China Southeast, East Himalaya, Fiji, Florida, Gabon, Ghana, Guinea, Hainan, India, Ivory Coast, Jawa, Laos, Liberia, Malaya, Myanmar, Nepal, Northern Territory, Queensland, Samoa, Sierra Leone, South China Sea, Sri Lanka, Sumatera, Taiwan, Thailand, Uganda, Zaïre as per POWO)

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Spermacoce pusilla Wall.

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BSI Flora of India Checklist Vol. 2 (Distribution):

Name Distribution
Spermacoce articularis Andaman & Nicobar Islands, Andhra Pradesh, Bihar, Gujarat, Himachal Pradesh, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Tripura, Uttar Pradesh, West Bengal
Spermacoce confusa Uttarakhand
Spermacoce exilis Andaman Islands, Arunachal Pradesh, Assam, Meghalaya, Mizoram, Sikkim, Tamil Nadu
Spermacoce hispida Almost throughout India
Spermacoce laevis Endemic to India: Andaman & Nicobar Islands (syn. of Spermacoce tenuior L. as per POWO with native distribution as Mexico to N. Venezuela and Peru, Caribbean)
Spermacoce latifolia Assam, Kerala, Meghalaya, Sikkim, West Bengal
Spermacoce ocymoides Gujrata, Kerala, Tamil Nadu
Spermacoce remota Andman & Nicobar Islands, Kerala
Spermacoce verticillata Karnataka, Kerala, West Bengal

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Flora of Peninsular India with keys at species links, if any:
Spermacoce articularis
Spermacoce assurgens (syn. of Spermacoce remota Lam. as per POWO)
Spermacoce hispida
Spermacoce latifolia
Spermacoce malabarica (Karnataka, Kerala)
Spermacoce mauritiana (syn. of Spermacoce exilis (L.O.Williams) C.D.Adams ex W.C.Burger & C.M.Taylor as per POWO)
Spermacoce ramanii (Kerala, Odisha) (syn. of Spermacoce lasiocarpa R.Br. as per POWO)
Spermacoce remota
Spermacoce verticillata


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From Floral Database of Tamilnadu :

Binomial Habit Notes Ref. Distrib.
Spermacoce articularis L.f.                              Herb Plains, Dry
Localities
Sivarajan et al, Procd. Indian. Acad. Sci.
(Plant Sci.) 97 (4) : 1987 
All districts
Spermacoce assurgens
Ruiz et Pavon
is a synonym of Spermacoce remota Lam.
Herb Plains,
Naturalized, Native of Tropical America
Sivarajan
et al, Procd. Indian. Acad.
Sci. (Plant Sci.) 97 (4) : 1987 
Kanchee puram
Spermacoce hispida L. Herb Plains,
Dry Localities
Flora
of Tamil Nadu, VOL. II, 1987
All
districts
Spermacoce
latifolia
Aubl.
is a synonym
of Spermacoce alata Aubl.
Herb Western
Ghats, Naturalized, Native of Tropical America
Baburaj
et al. 2001
Nilgiri
Spermacoce mauritiana
Osea Gideon
ex Verdc. is a synonym of Spermacoce
exilis

(L.O.Williams) C.D.Adams ex W.C.Burger & C.M.Taylor
Herb Western
Ghats, Moist Deciduous Forests
Flora
of Tamil Nadu, VOL. II, 1987; Deb & Dutta 1984
Coimbatore,
Dindigul, Nilgiri
Spermacoce ocymoides
Burm.f. var. ocymoides
Herb Plains
to Low Altitude
Flora
of Tamil Nadu, VOL. II, 1987
Coimbatore,
Dindigul, Kanniya kumari, Namakkal, Nilgiri, Theni, Salem, Tiruchchira ppalli,
Tirunelveli, Tiruvanna malai, Virudhu nagar
Spermacoce ocymoides
Burm.f. var.
thekkumalensis (Sivarajan &
Joseph)
Kumari is a
synonym of Spermacoce ocymoides
Burm.f.
Herb Western
Ghats, Evergreen Forests
Flora
of Tamil Nadu, VOL. II, 1987; Sivarajan & Joseph 1979
Tirunelveli
Spermacoce
pusilla
Wall.
Herb Plains, Dry Localities Flora
of Tamil Nadu, VOL. II, 1987
Coimbatore,
Kanchee puram, Nilgiri, Salem, Thiruvallur, Tiruchchira ppalli,
Tiruvanna malai,  Vellore
Spermacoce
ramanii

Sivarajan &
Nair is a
synonym of Spermacoce lasiocarpa
R.Br. ex Wall.
Herb Plains,
Moist Localities 
Sivarajan
et al, Procd. Indian. Acad.
Sci. (Plant Sci.) 97 (4) : 1987 
Coimbatore,
Tirunelveli, Vil
uppuram

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Botanical name Synonyms Family Common name
Spermacoce alata Borreria latifolia, Borreria alata, Spermacoce latifolia Rubiaceae Broad-Leaf Buttonweed
Spermacoce articularis Spermacoce scabra, Borreria articularis, Spermacoce flexuosa Rubiaceae Jointed Buttonweed
Spermacoce ocymoides Borreria ocymoides, Spermacoce tenera, Spermacoce domingensis Rubiaceae Purple Leaved Button Weed
Spermacoce pusilla Spermacoce kleinii, Spermacoce gardneri, Borreria pusilla Rubiaceae Tiny False Buttonweed
Spermacoce verticillata Spermacoce globosa, Borreria verticillata Rubiaceae Shrubby False Buttonweed

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Spermacoce alata Aublet  [apparently native to the Neotropics but exact origin unknown; Antilles, Central America, North America (Mexico, Florida), widespread in tropical South America; naturalized in Africa, S and SE Asia, Australia, Madagascar, and perhaps North America].
Spermacoce articularis Linnaeus f. [India, Indonesia, Japan (Ryukyu Islands), Malaysia, Nepal, Pakistan, Philippines, Sri Lanka, Vietnam; Africa, Australia].
Spermacoce exilis (L. O. Williams) C. D. Adams [apparently native to the Neotropics but exact origin unknown; India, Indonesia, Nepal, Sri Lanka, Vietnam; Africa, Antilles, Australia, Central America, Indian Ocean islands (Mauritius), North America (Mexico), Pacific islands, N South America].
Spermacoce hispida Linnaeus [India, Indonesia, Malaysia, Philippines, Sri Lanka, Vietnam; Australia].
Spermacoce prostrata Aublet  [apparently native to the Neotropics but exact origin unknown; India, Indonesia, Sri Lanka; Antilles, Central America, Indian Ocean islands (Mauritius), North America (Mexico), Pacific islands, N South America]. (No distribution given in India by Catalogue of Life)
Spermacoce pusilla Wallich in Roxburgh [Bhutan, India, ?Indonesia, Malaysia, Myanmar, Nepal, Pakistan, Philippines, Sri Lanka, Thailand, Vietnam; introduced in tropical Africa].
Spermacoce remota Lamarck [apparently native to the Neotropics; India, Indonesia, Singapore, Sri Lanka, Thailand, Vietnam; Antilles, Australia, Central America, Indian Ocean islands (Mauritius), North America (Mexico), Pacific islands, N South America].

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Borreria articularis var. articularis (Throughout India, Western Himalayas in Simla, southward to Ceylon and Singapore, S. China and Malaya) is a synonym of Spermacoce articularis L.f.
Borreria articularis var. hispida (L.) Shivaranjan & Manilal (Throughout India, Western Himalayas in Simla, southward to Ceylon and Singapore, S. China and Malaya) is a synonym of Spermacoce hispida L.
Borreria pusilla (Wall.) DC. (Tropical Africa, tropical Asia, Pakistan to Japan and Philippines) is a synonym of Spermacoce pusilla Wall.

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Borreria alata (Aubl.) DC. (Tropical America, naturalised widely in tropical Asia) is a synonym of Spermacoce alata Aubl.
Borreria articularis (L. f.) F. N. Williams (Himalaya (Simla to Nepal), India, Ceylon, east to China, Malaysia) is a synonym of Spermacoce articularis L.f.
Borreria pusilla (Wall.) DC. (Africa, Himalaya (Kashmir to Bhutan), India, Ceylon) is a synonym of Spermacoce pusilla Wall.
Borreria repens DC. (Tropical Africa, Subtropical Himalaya) is a synonym of Spermacoce exilis (L.O.Williams) C.D.Adams ex W.C.Burger & C.M.Taylor

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Flora of Medak District, Andhra Pradesh, India By T. Pullaiah, Chintala Prabhakar, B. Ravi Prasad Rao (1998)- Details with keys
An Excursion Flora of Central Tamilnadu, India By K. M. Matthew (1995)- Details with keys

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Flora of Eastern Ghats: Hill Ranges of South East India, Volume 3 By T. Pullaiah, K. Sri Ramamurthy (2007)- Details with keys
Spermacoce assurgens Ruiz et Pavon is a synonym of Spermacoce remota Lam.
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Flora of Davanagere District, Karnataka, India By B. K. Manjunatha, V. Krishna, T. Pullaiah (2004)- Details with keys
Floristic Diversity of Assam: Study of Pabitora Wildlife Sanctuary By Bora, Yogendra Kumar (2003)- Details-
Spermacoce latifolia Aubl. is a synonym of Spermacoce alata

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Plant Wealth of the Lower Ganga Delta: An Eco-taxonomical Approach By Kumudranjan Naskar (1993)- Details with keys
Borreria articularis (L. f.) F. N. Williams is a synonym of Spermacoce articularis
Borreria stricta G.Mey. is a synonym of Spermacoce verticillata L.


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A Revised Handbook to the Flora of Ceylon -, Volume 12 By M. D. Dassanayake (1998)- Details with keys
Spermacoce assurgens Ruiz et Pavon is a synonym of Spermacoce remota Lam.

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Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1993)- Details-
Spermacoce hispida

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Spermacoce ‎(Rubiaceae) : 1 post by 1 author.

I have updated eFI (efloraofindia) page on Spermacoce (Pl. click).

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.

If someone can provide complete list of Indian species with source references it will be wonderful.
Any comments/ corrections are welcome.


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Pl. go through Spermacoce (Rubiaceae) page with images of species in efloraofindia.

If you find any incorrect identification, pl. let us know.

If anybody can send images of other species of this genera (for incorporation in the website) to indiantreepix@googlegroups.com, it will be really nice.


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