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植物研究雑誌 第 88 巻 第 3 号
2013 年 6 月
J. Jpn. Bot. 88: 188–190 (2013)
Mohan P. Devkotaa,* and Hiroshi Ikedab: A New Record for Tolypanthus involucratus (Loranthaceae) from Nepal a
Botany Department, Amrit Campus, Tribhuvan University, Thamel, Kathmandu, NEPAL; The University Museum, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 JAPAN *Corresponding author:
[email protected] b
Summary: A specimen of Tolypanthus involucratus (Roxb.) Tieg. (Loranthaceae), collected in eastern Nepal, was discovered among unidentified specimens of mistletoes in the Natural History Museum, London (BM). This is a new record for this species from Nepal, as well as the western-most distribution for the species.
Tolypanthus involucratus (Roxb.) Tieg. is a hemiparasitic shrub in the family Loranthaceae. It was originally described in 1824, based on materials from the eastern border of Bengal, as a member of the genus Loranthus (Roxburgh 1824). It was later transferred to an independent genus, Tolypanthus, because of its prominent involucral bracts (Tieghem 1895). As a part of the "Flora of Nepal Project", the first author visited the Natural History Museum, London (BM) in 2011, and found a specimen of Tolypanthus involucratus among unidentified specimens of Loranthaceae (Fig. 1). The specimen was collected in Ilam District, east Nepal, in 1967, by J. D. A. Stainton. Tolypanthus involucratus is known from Sikkim (Hooker 1886), Bhutan (Grierson and Long 1983), NE India (Roxburgh 1824, 1832, Haridasan and Rao 1987, Brandis 1906, Kanjilal 1997), Bangladesh (Ahmed 2009), and Myanmar (Kurz 1877, Kress et al. 2003), but there are no reports of its presence in Nepal (see Tebbs 1982, Press et al. 2000). Therefore, this is the first record of its presence in Nepal, and the western-most report of its distribution.
Tolypanthus involucratus (Roxb.) Tieg. in Bull. Soc. Bot. Fr. 42: 248 (1895) – Grierson & Long, Fl. Bhutan 1(1): 148 (1983) – Haridasan & Rao, Forest Fl. Meghalaya 2: 761 (1987) – Ahmed, Encyclop. Fl. Fauna Bangladesh 8: 405 (2009). Loranthus involucratus Roxb. [Hort. Bengal. 87 (1814), nom. nud.] Fl. Ind. 2: 208 (1824); Fl. Ind. ed. 1832, 1: 552 (1832) & 2: 188 (1832) – Kurz, Fl. Brit. Burma 2: 315 (1877) – Hooker, Fl. Brit. India 5: 218 (1886) – Brandis, Ind. Trees 551 (1906) – Kress & al., Checklist Trees, Shrubs, Herbs, Climbers Myanmar 285 (2003). Distribution: E Nepal (Ilam), Bhutan, India (Sikkim, Assam, Meghalaya), Bangladesh, Myanmar. Specimen examined: E Nepal. Ilam District, Kankai Khola, Soktim (26°48′N 87°50′E), 1000 ft., 3 April 1967, J. D. A. Stainton 5773 (BM).
We would like to thank the curator of BM for providing the opportunity to examine unidentified specimens of mistletoes. We thank Dr. David E. Boufford, Harvard University Herbaria, for checking the English grammar of the manuscript. We also appreciate the fellowship provided by the Royal Society of Edinburgh for the study the herbarium specimens deposited in various herbaria in the UK (to M. P. D). This study was partly supported by a Grant-in-Aid for Scientific Research (A), no. 23255005 (to H. I.) from the Japan Society for the Promotion of Science.
April 2013
Journal of Japanese Botany Vol. 88 No.3
Fig. 1. Tolypanthus involucratus (Loranthaceae) from Nepal (E Nepal: Ilam District, Kankai Khola, Soktim, 26°48′N 87°50′E, 1000 ft., 3 April 1967, J. D. A. Stainton 5773, BM)
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References Ahmed Z. U. (ed.) 2009. Encyclopedia of Flora and Fauna of Bangladesh. Vol. 8. 478 pp. Asiatic Society of Bangladesh, Dhaka. Brandis D. 1906. Indian Trees. 767 pp. Archibald Constable & Co. Ltd., London. Grierson A. J. C. and Long D. G. 1983. Flora of Bhutan. Vol. 1(1). 186 pp. Royal Botanic Garden Edinburgh, Scotland. Haridasan K. and Rao K. K. 1987. Forest Flora of Meghalaya. 2: 752–763. Bishan Singh Mahendar Pal Singh, Dehradun. Hooker J. D. 1886. Flora of British India. Vol. 5. 910 pp. L. Reeve & Col., London. Kanjilal U. N. 1997. Flora of Assam. 4: 117–128. Omsons Publications, New Delhi. Kress W. J., DeFilipps R. A., Farr E. and Daw Yin Yin Kyi 2003. A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar. Contr. U. S. Nat. Herb. 45: 1–590.
M. P. Devkotaa，池田 博 b：ネパール新産のヤドリギ 科 Tolypanthus involucratus BM に 収 蔵 さ れ て い る 未 同 定 標 本 の 中 か ら， ネ パ
ー ル 新 産 と な る ヤ ド リ ギ 科 Tolypanthus involucratus (Roxb.) Tieg. を見出した．この標本は東ネパール・イ ラム (Ilam) 地方で J. D. A. Stainton により 1967 年に採 集されたものである．Tolypanthus involucratus はこれ までシッキム，ブータン，インド北東部（アッサム，メ
2013 年 6 月
Kurz S. 1877. Flora of British Burma. Vol. 2. 549 pp. Office of the Superintendent of Government Printing, Calcutta. Press J. R., Shrestha K. K. and Sutton D. A. 2000. Annotated Checklist of the Flowering Plants of Nepal. 430 pp. The Natural History Museum, London. Roxburgh W. (Carey W. ed.) 1824. Flora Indica; or Descriptions of Indian Plants. Vol. 2. 588 pp. Mission Press, Serampore. Roxburgh W. (Carey W. ed.) 1832. Flora Indica; or Descriptions of Indian Plants. Vol. 1. 741 pp. Allen & Co., London. Tebbs M. C. 1982. Loranthaceae. In: Hara H., Charter A. O. and Williams L. H. J. (eds.), An Enumeration of Flowering Plants of Nepal. 3: 190 & 191. British Museum (Natural History), London. Tieghem P. É. L. van 1895. Et Reconnue Comme Etablissment D’utilite Publique. Bull. Soc. Bot. Fr. 42: 248–249.
ガラヤ地方），バングラデシュ，およびミャンマーで採 集された記録はあったが，ネパールからの報告はなかっ た．この標本はネパール新産となるとともに，分布の西 限ともなるものである． （a トリブバン大学アムリットキャンパス， b
東京大学総合研究博物館）
