Abstract
Syzygium namborense is described and illustrated as a new species from the Nambor Reserve Forest, Assam, India. It resembles Syzygium nervosum in having glabrous, chartaceous and aromatic leaves, paniculate inflorescences with second order branching, calyptrate flowers, numerous stamens and equal number of petals in the calyptra but differs from it in having more compressed branchlets with shorter nodes and greater number of leaves, shorter acumen, strictly elliptic leaves with acuminate apex and cuneate base, greater number of lateral veins, intramarginal vein uniform along the blade, sessile yellowish white flowers with obconical hypanthium and a higher number of ovules per locule.
References
<p>Ambarish, A. (2013) <em>Floristic Diversity of Arunachal Pradesh (Upper Subansiri District). </em>Bishen Singh Mahendra Pal Singh, Dehra Dun, pp. 192–195.</p>
<p>Balakrishnan, N.P. (1981) <em>Flora of Jowai </em>1. Botanical Survey of India, Howrah, India, pp. 198–201.</p>
<p>Brambach, F., Byng, J.W. & Culmsee, H. (2017) Five new species of <em>Syzygium </em>(Myrtaceae) from Sulawesi, Indonesia. <em>PhytoKeys</em> 81: 47–78. https://doi.org/10.3897/phytokeys.81.13488</p>
<p>Brown, R. (1820) <em>In</em>: Roxburgh, W. (Ed.) <em>Plants of the coast of Coromandel; selected from drawings and descriptions presented to the hon. court of directors of the East India Company</em> 3. Bulmer & Co., London, 95 pp. https://doi.org/10.5962/bhl.title.467</p>
<p>Byng, J.W., Wilson, P.G. & Snow, N. (2015) Typifications and nomenclatural notes on Indian Myrtaceae <em>Phytotaxa </em>217 (2): 101–116. https://doi.org/10.11646/phytotaxa.217.2.1</p>
<p>Candolle, A.P. de (1828) Myrtaceae. <em>In </em>Candolle, A.P. de (Ed.) <em>Prodromus Systematis Naturalis Regni Vegetabilis </em>3. Treuttel et Wurts, Paris, pp. 207–296. https://doi.org/10.5962/bhl.title.286</p>
<p>Chauhan, A.S. (2000) <em>Myrtaceae</em>. <em>In:</em> Singh, N.P., Chauhan, A.S. & Monda, M.S. (Eds.) <em>Flora of Manipur </em>Vol.1. Botanical Survey of India, Calcutta, pp. 385–388.</p>
<p>Chithra, V. (1983) <em>Myrtaceae</em>. <em>In:</em> Nair, N.C. & Henry, A.N. (Eds.) <em>Flora of Tamil Nadu, India. Series 1: Analysis. </em>Vol.1. Botanical Survey of India, Coimbatore, pp. 150–158.</p>
<p>Deb, D.B. (1981) <em>The Flora of Tripura State. </em>Vol. 1. Today & Tomorrow’s Printers and Publishers, India, pp. 366–373.</p>
<p>Duthie, J.F. (1879) Myrtaceae. <em>In: </em>Hooker, J.D. (Ed.) <em>Flora of British India </em>2. L. Reeve & Co., London. pp. 462–506. https://doi.org/10.5962/bhl.title.678</p>
<p>Gaertner, J. (1788) <em>De Fructibus et Seminibus Plantarum Stvtgardiae</em> 1. Academiae Carolinae Stvtgardiae, 577 pp. https://doi.org/10.5962/bhl.title.53838</p>
<p>Hajra, P.K., Verma, D.M. & Giri, G.S. (1996) <em>Materials for the Flora of Arunachal Pradesh. </em>Vol.1:<em> Ranunculaceae to Dipsacaceae. </em>Botanical Survey of India, Kolkata, pp. 470–479.</p>
<p>Haridasan, K. & Rao, R.R. (1985) <em>Forest flora of Meghalaya. </em>Vol. 1. B.S.M.P.S., Dehra Dun, India, pp. 386–403.</p>
<p>Kanjilal, U.N., Kanjilal, P.C. & Das, A. (1938) Myrtaceae. <em>In</em>: Kanjilal, U.N., Kanjilal, P.C. & Das, A. (Eds.) <em>Flora of Assam</em> 2. Government of Assam, Shillong, India, pp. 257–287.</p>
<p>King, R.M. & Robinson, H. (1970) Studies in the Eupatorieae (Compositae) XXI. The genus <em>Chromolaena</em>. <em>Phytologia</em> 20 (3): 196–209. https://doi.org/10.5962/bhl.part.7118</p>
<p>Kulkarni, B.G. (2001) <em>Myrtaceae</em>. <em>In:</em> Singh, N.P., Lakshminarasimhan, P., Karthikeyan, S. & Prasanna, P.V. (Eds.) <em>Flora of Maharashtra State. </em>Vol.2<em>. </em>Botanical Survey of India, Howrah, India, pp. 7–16.</p>
<p>Lindley, J. (1844) <em>Clerodendron glandulosum</em>. <em>Edward’s Botanical Register</em> 30: 1–19.</p>
<p>Linnaeus, C. (1753) <em>Species Plantarum</em> 1. L. Salvius, Stockholm, pp. 200–471. https://doi.org/10.5962/bhl.title.669</p>
<p>Linnaeus, C. (1759) <em>Systema Naturae</em>, 10<sup>th</sup> ed., vol. 2, 1205 pp. https://doi.org/10.5962/bhl.title.542</p>
<p>Loureiro, J. (1790) <em>Flora Cochinchinensis</em> 1. Ulyssipone, Lisbon, 296 pp. https://doi.org/10.5962/bhl.title.40199</p>
<p>Merrill, E.D. (1919) Additional notes on the Kwangtung Flora. <em>The Philippine Journal of Science </em>15: 1–249.</p>
<p>Murugan, C. & Manickam, V.S. (2004) Two additions to Myrtaceae of India. <em>Journal of Economic and Taxonomic Botany </em>28: 523–526.</p>
<p>Nayar, T.S., Beegam, A.R., Mohanan, N. & Rajkumar, G. (2006) <em>Flowering Plants of Kerala – A Handbook. </em>TBGRI, Thiruvananthapuram, Kerala, pp. 445–455.</p>
<p>Nayar, T.S., Beegam, A.R. & Sibi, M. (2014) <em>Flowering Plants of the Western Ghats</em>, <em>India</em>. Jawaharlal Nehru Tropical Botanical Garden and Research Institute, pp. 669–687 & 1252 pp.</p>
<p>Pal, G.D. (2013) <em>Flora of Lower Subansiri district, Arunachal Pradesh (India) </em>Vol.1<em>. </em>Botanical Survey of India, Kolkata, pp. 317–322.</p>
<p>Ramana, M.V., Chorghe, A. & Venu, P. (2014) Two new species of <em>Syzygium</em> (Myrtaceae) from Saddle Peak National Park, Andaman and Nicobar Islands, India. <em>Blumea</em> 59: 42–48. https://doi.org/10.3767/000651914X683593</p>
<p>Ramasubbu, R., Surendran, A., Chelladurai, D., Nambi, S.K. & Gurusamy, M. (2018) A new species of <em>Syzygium </em>(Myrtaceae) from the South Western Ghats of Tamil Nadu, India. <em>Phytotaxa </em>374 (3): 263–267. https://doi.org/10.11646/phytotaxa.374.3.8</p>
<p> Ramasubbu, R., Surendran, A & Kasi, K.S. (2020) <em>Syzygium anamalaianum </em>(Myrtaceae), a new tree species from the Western Ghats of Tamil Nadu, India. <em>Phytotaxa </em>450 (2): 237–242. https://doi.org/10.11646/phytotaxa.450.2.9</p>
<p>Robi, A.J., Sujanapal, P. & Sasidharan, N. (2014) <em>Syzygium sahyadricum </em>(Myrtaceae), a new tree species from India, and notes on the distribution of <em>S. spathulatum </em>Thwaites. <em>Phytotaxa</em> 174 (5): 285–290. https://doi.org/10.11646/phytotaxa.174.5.5</p>
<p>Roxburgh, R. (1832) <em>Flora Indica</em>; or, <em>Descriptions of Indian Plants</em> 2. Serampore: printed for W. Thacker and Co. Calcutta and Parbury, Allen and Co. London, pp. 482–497. https://doi.org/10.5962/bhl.title.590</p>
<p>Saldanha, C.J. (1996) <em>Flora of Karnataka. </em>Vol. 2. Oxford & IBH Publishing, New Delhi, India, pp. 23–32.</p>
<p>Sarma, J., Barbhuiya, H.A. & Dey, S. (2019) A new rheophytic species of <em>Syzygium </em>Gaertn. (Myrtaceae) from Assam, North East India. <em>Adansonia </em>3: 53–58. https://doi.org/10.5252/adansonia2019v41a6</p>
<p>Shareef, S.M., Santhosh Kumar, E.S. & Shaju, T. (2012) A new species of <em>Syzygium </em>(Myrtaceae) from the southern Western Ghats of Kerala, India. <em>Phytotaxa </em>71: 28–33. https://doi.org/10.11646/phytotaxa.71.1.5</p>
<p>Shareef, S.M., Santhosh Kumar, E.S. & Roy, P.E. (2013) A new species of <em>Syzygium </em>(Myrtaceae) from Kerala, India. <em>Phytotaxa </em>129: 34–38. https://doi.org/10.11646/phytotaxa.129.1.2</p>
<p>Shareef, S.M. & Santhosh Kumar, E.S. (2020) Census of <em>Syzygium </em>Gaertn. (Myrtaceae) in India. <em>Abrahamia</em> 6 (2): 90–107.</p>
<p>Singh, K.P. (2002) Myrtaceae.<em> In:</em> Singh, N.P., Singh, K.P. & Singh, D.K. (Eds.) <em>Flora of Mizoram. </em>Vol.1. Botanical Survey of India, Calcutta, pp. 585–594.</p>
<p>Skeels, H.C. (1912) 31571 <em>Syzygium cumini</em>. <em>In</em>: Galloway, B.T. (Ed.) Seeds and plants imported during the period from July 1 to September 30, 1911: Inventory No. 28. <em>Bulletin, Bureau of Plant Industry, United States Department of Agriculture </em>25: 1–248.</p>
<p>Soh, W.K. & Parnell, J. (2015) A revision of <em>Syzygium </em>Gaertn. (Myrtaceae) in Indochina (Cambodia, Laos and Vietnam). <em>Adansonia</em> 3: 179–275. https://doi.org/10.5252/a2015n2a1</p>
<p>Sreekala, A.K., Pillai, D.S., Akhil, R., Surendran, A & Ramasubbu, R. (2019) A new species of <em>Syzygium </em>(Myrtaceae) from the Agasthyamalai Biosphere Reserve, Kerala, India. <em>Phytotaxa </em>403: 66–70. https://doi.org/10.11646/phytotaxa.403.1.6</p>
<p>Sujanapal, P., Robi, A.J., Udayan, P.S. & Dantus, K.J. (2013) <em>Syzygium sasidharanii </em>sp. nov. (Myrtaceae)- A new species with edible fruits from Agasthyamala Hills of Western Ghats. India. <em>International Journal of Advanced Research </em>5: 44–48.</p>
<p>Turner, I.M. & Gandhi, K.N. (2005) A correction in <em>Cleistocalyx</em> (Myrtaceae). <em>Garden’s Bulletin Singapore</em> 57: 25–27.</p>
<p>Viswanathan, M.B. & Manikandan, U. (2008) A new species of <em>Syzygium </em>(Myrtaceae) from the Kalakkad Mundanthurai Tiger Reserve in Peninsular India. <em>Adansonia </em>Ser.3. 30 (1): 113–118.</p>
<p>WCSP (2020) <em>World Checklist of Selected Plant Families</em>. Facilitated by the Royal Botanic Gardens, Kew. Available from: http://wcsp.science.kew.org (accessed 7 March 2022)</p>
<p>Balakrishnan, N.P. (1981) <em>Flora of Jowai </em>1. Botanical Survey of India, Howrah, India, pp. 198–201.</p>
<p>Brambach, F., Byng, J.W. & Culmsee, H. (2017) Five new species of <em>Syzygium </em>(Myrtaceae) from Sulawesi, Indonesia. <em>PhytoKeys</em> 81: 47–78. https://doi.org/10.3897/phytokeys.81.13488</p>
<p>Brown, R. (1820) <em>In</em>: Roxburgh, W. (Ed.) <em>Plants of the coast of Coromandel; selected from drawings and descriptions presented to the hon. court of directors of the East India Company</em> 3. Bulmer & Co., London, 95 pp. https://doi.org/10.5962/bhl.title.467</p>
<p>Byng, J.W., Wilson, P.G. & Snow, N. (2015) Typifications and nomenclatural notes on Indian Myrtaceae <em>Phytotaxa </em>217 (2): 101–116. https://doi.org/10.11646/phytotaxa.217.2.1</p>
<p>Candolle, A.P. de (1828) Myrtaceae. <em>In </em>Candolle, A.P. de (Ed.) <em>Prodromus Systematis Naturalis Regni Vegetabilis </em>3. Treuttel et Wurts, Paris, pp. 207–296. https://doi.org/10.5962/bhl.title.286</p>
<p>Chauhan, A.S. (2000) <em>Myrtaceae</em>. <em>In:</em> Singh, N.P., Chauhan, A.S. & Monda, M.S. (Eds.) <em>Flora of Manipur </em>Vol.1. Botanical Survey of India, Calcutta, pp. 385–388.</p>
<p>Chithra, V. (1983) <em>Myrtaceae</em>. <em>In:</em> Nair, N.C. & Henry, A.N. (Eds.) <em>Flora of Tamil Nadu, India. Series 1: Analysis. </em>Vol.1. Botanical Survey of India, Coimbatore, pp. 150–158.</p>
<p>Deb, D.B. (1981) <em>The Flora of Tripura State. </em>Vol. 1. Today & Tomorrow’s Printers and Publishers, India, pp. 366–373.</p>
<p>Duthie, J.F. (1879) Myrtaceae. <em>In: </em>Hooker, J.D. (Ed.) <em>Flora of British India </em>2. L. Reeve & Co., London. pp. 462–506. https://doi.org/10.5962/bhl.title.678</p>
<p>Gaertner, J. (1788) <em>De Fructibus et Seminibus Plantarum Stvtgardiae</em> 1. Academiae Carolinae Stvtgardiae, 577 pp. https://doi.org/10.5962/bhl.title.53838</p>
<p>Hajra, P.K., Verma, D.M. & Giri, G.S. (1996) <em>Materials for the Flora of Arunachal Pradesh. </em>Vol.1:<em> Ranunculaceae to Dipsacaceae. </em>Botanical Survey of India, Kolkata, pp. 470–479.</p>
<p>Haridasan, K. & Rao, R.R. (1985) <em>Forest flora of Meghalaya. </em>Vol. 1. B.S.M.P.S., Dehra Dun, India, pp. 386–403.</p>
<p>Kanjilal, U.N., Kanjilal, P.C. & Das, A. (1938) Myrtaceae. <em>In</em>: Kanjilal, U.N., Kanjilal, P.C. & Das, A. (Eds.) <em>Flora of Assam</em> 2. Government of Assam, Shillong, India, pp. 257–287.</p>
<p>King, R.M. & Robinson, H. (1970) Studies in the Eupatorieae (Compositae) XXI. The genus <em>Chromolaena</em>. <em>Phytologia</em> 20 (3): 196–209. https://doi.org/10.5962/bhl.part.7118</p>
<p>Kulkarni, B.G. (2001) <em>Myrtaceae</em>. <em>In:</em> Singh, N.P., Lakshminarasimhan, P., Karthikeyan, S. & Prasanna, P.V. (Eds.) <em>Flora of Maharashtra State. </em>Vol.2<em>. </em>Botanical Survey of India, Howrah, India, pp. 7–16.</p>
<p>Lindley, J. (1844) <em>Clerodendron glandulosum</em>. <em>Edward’s Botanical Register</em> 30: 1–19.</p>
<p>Linnaeus, C. (1753) <em>Species Plantarum</em> 1. L. Salvius, Stockholm, pp. 200–471. https://doi.org/10.5962/bhl.title.669</p>
<p>Linnaeus, C. (1759) <em>Systema Naturae</em>, 10<sup>th</sup> ed., vol. 2, 1205 pp. https://doi.org/10.5962/bhl.title.542</p>
<p>Loureiro, J. (1790) <em>Flora Cochinchinensis</em> 1. Ulyssipone, Lisbon, 296 pp. https://doi.org/10.5962/bhl.title.40199</p>
<p>Merrill, E.D. (1919) Additional notes on the Kwangtung Flora. <em>The Philippine Journal of Science </em>15: 1–249.</p>
<p>Murugan, C. & Manickam, V.S. (2004) Two additions to Myrtaceae of India. <em>Journal of Economic and Taxonomic Botany </em>28: 523–526.</p>
<p>Nayar, T.S., Beegam, A.R., Mohanan, N. & Rajkumar, G. (2006) <em>Flowering Plants of Kerala – A Handbook. </em>TBGRI, Thiruvananthapuram, Kerala, pp. 445–455.</p>
<p>Nayar, T.S., Beegam, A.R. & Sibi, M. (2014) <em>Flowering Plants of the Western Ghats</em>, <em>India</em>. Jawaharlal Nehru Tropical Botanical Garden and Research Institute, pp. 669–687 & 1252 pp.</p>
<p>Pal, G.D. (2013) <em>Flora of Lower Subansiri district, Arunachal Pradesh (India) </em>Vol.1<em>. </em>Botanical Survey of India, Kolkata, pp. 317–322.</p>
<p>Ramana, M.V., Chorghe, A. & Venu, P. (2014) Two new species of <em>Syzygium</em> (Myrtaceae) from Saddle Peak National Park, Andaman and Nicobar Islands, India. <em>Blumea</em> 59: 42–48. https://doi.org/10.3767/000651914X683593</p>
<p>Ramasubbu, R., Surendran, A., Chelladurai, D., Nambi, S.K. & Gurusamy, M. (2018) A new species of <em>Syzygium </em>(Myrtaceae) from the South Western Ghats of Tamil Nadu, India. <em>Phytotaxa </em>374 (3): 263–267. https://doi.org/10.11646/phytotaxa.374.3.8</p>
<p> Ramasubbu, R., Surendran, A & Kasi, K.S. (2020) <em>Syzygium anamalaianum </em>(Myrtaceae), a new tree species from the Western Ghats of Tamil Nadu, India. <em>Phytotaxa </em>450 (2): 237–242. https://doi.org/10.11646/phytotaxa.450.2.9</p>
<p>Robi, A.J., Sujanapal, P. & Sasidharan, N. (2014) <em>Syzygium sahyadricum </em>(Myrtaceae), a new tree species from India, and notes on the distribution of <em>S. spathulatum </em>Thwaites. <em>Phytotaxa</em> 174 (5): 285–290. https://doi.org/10.11646/phytotaxa.174.5.5</p>
<p>Roxburgh, R. (1832) <em>Flora Indica</em>; or, <em>Descriptions of Indian Plants</em> 2. Serampore: printed for W. Thacker and Co. Calcutta and Parbury, Allen and Co. London, pp. 482–497. https://doi.org/10.5962/bhl.title.590</p>
<p>Saldanha, C.J. (1996) <em>Flora of Karnataka. </em>Vol. 2. Oxford & IBH Publishing, New Delhi, India, pp. 23–32.</p>
<p>Sarma, J., Barbhuiya, H.A. & Dey, S. (2019) A new rheophytic species of <em>Syzygium </em>Gaertn. (Myrtaceae) from Assam, North East India. <em>Adansonia </em>3: 53–58. https://doi.org/10.5252/adansonia2019v41a6</p>
<p>Shareef, S.M., Santhosh Kumar, E.S. & Shaju, T. (2012) A new species of <em>Syzygium </em>(Myrtaceae) from the southern Western Ghats of Kerala, India. <em>Phytotaxa </em>71: 28–33. https://doi.org/10.11646/phytotaxa.71.1.5</p>
<p>Shareef, S.M., Santhosh Kumar, E.S. & Roy, P.E. (2013) A new species of <em>Syzygium </em>(Myrtaceae) from Kerala, India. <em>Phytotaxa </em>129: 34–38. https://doi.org/10.11646/phytotaxa.129.1.2</p>
<p>Shareef, S.M. & Santhosh Kumar, E.S. (2020) Census of <em>Syzygium </em>Gaertn. (Myrtaceae) in India. <em>Abrahamia</em> 6 (2): 90–107.</p>
<p>Singh, K.P. (2002) Myrtaceae.<em> In:</em> Singh, N.P., Singh, K.P. & Singh, D.K. (Eds.) <em>Flora of Mizoram. </em>Vol.1. Botanical Survey of India, Calcutta, pp. 585–594.</p>
<p>Skeels, H.C. (1912) 31571 <em>Syzygium cumini</em>. <em>In</em>: Galloway, B.T. (Ed.) Seeds and plants imported during the period from July 1 to September 30, 1911: Inventory No. 28. <em>Bulletin, Bureau of Plant Industry, United States Department of Agriculture </em>25: 1–248.</p>
<p>Soh, W.K. & Parnell, J. (2015) A revision of <em>Syzygium </em>Gaertn. (Myrtaceae) in Indochina (Cambodia, Laos and Vietnam). <em>Adansonia</em> 3: 179–275. https://doi.org/10.5252/a2015n2a1</p>
<p>Sreekala, A.K., Pillai, D.S., Akhil, R., Surendran, A & Ramasubbu, R. (2019) A new species of <em>Syzygium </em>(Myrtaceae) from the Agasthyamalai Biosphere Reserve, Kerala, India. <em>Phytotaxa </em>403: 66–70. https://doi.org/10.11646/phytotaxa.403.1.6</p>
<p>Sujanapal, P., Robi, A.J., Udayan, P.S. & Dantus, K.J. (2013) <em>Syzygium sasidharanii </em>sp. nov. (Myrtaceae)- A new species with edible fruits from Agasthyamala Hills of Western Ghats. India. <em>International Journal of Advanced Research </em>5: 44–48.</p>
<p>Turner, I.M. & Gandhi, K.N. (2005) A correction in <em>Cleistocalyx</em> (Myrtaceae). <em>Garden’s Bulletin Singapore</em> 57: 25–27.</p>
<p>Viswanathan, M.B. & Manikandan, U. (2008) A new species of <em>Syzygium </em>(Myrtaceae) from the Kalakkad Mundanthurai Tiger Reserve in Peninsular India. <em>Adansonia </em>Ser.3. 30 (1): 113–118.</p>
<p>WCSP (2020) <em>World Checklist of Selected Plant Families</em>. Facilitated by the Royal Botanic Gardens, Kew. Available from: http://wcsp.science.kew.org (accessed 7 March 2022)</p>