J. Jpn. Bot. 94(2): 109–111 (2019)

Kothareddy P: Peristylus intrudens (), a New Record for Mainland

Central National Herbarium, Botanical Survey of India, Howrah, West Bengal, 711103 INDIA E-mail: [email protected]

(Accepted on October 13, 2018)

Summary: Peristylus intrudens (Ames) Ormerod Taxonomic treatment (Orchidaceae: ), is reported here Peristylus intrudens (Ames) Ormerod in as a new record for mainland India, based on Taiwania 56: 46 (2011). – Habenaria intrudens the collection from Meghalaya. A detailed Ames in Schedul. Orch. 6: 1, f. 1 (1923). Type: description, distribution and photographs are provided . Luzon, Rizal Prov., Antipolo, October 1913, M. Ramos BS-21999 (AMES– Peristylus Blume (Orchidaceae) is one of the holotype, n.v.). [Fig. 1A, B] interesting genera in the subfamily Orchidoideae Peristylus spiranthes (Schauer) S. Y. Hu var. and comprises ca. 70 species distributed in taipoensis S. Y. Hu & Barretto in Chung Chi Mascarenes, tropical and subtropical to J. 13(2): 2 (1976). – P. taipoensis (S. Y. Hu & and the Pacific islands (Govaerts et Barretto) T. C. Hsu & S. W. Chung in Taiwania al. 2017). Peristylus is represented by 34 taxa 54: 84 (2009). – P. lacertifer (Lindl.) J. J. Sm. in India (Misra 2007, Kathigeyan et al. 2010, var. taipoensis (S. Y. Hu & Barretto) S. C. Chen, Kumar et al. 2010, Prabhukumar et al. 2016, S. W. Gale & P. J. Cribb in C. Y. Wu & al., Fl. Alappatt 2017), of which 15 taxa are reported 25: 143 (2009). from North East India including Meghalaya Terrestrial herb, ca. 25 cm high. Tubers (Rao 2007). During recent orchid explorations in ellipsoid or ovoid, ca. 1.5 × 1 cm. Stem Meghalaya, several Peristylus specimens were cylindrical. Leaves 2–5, clustered at the base collected from Jorin grasslands in the Khasi of stem, lanceolate-oblong, apex acute, 3–6 × hills. On critical study they were identified as 1.5–1.8 cm. Inflorescence a raceme, ca. 20 cm P. intrudens (Ames) Ormerod. Although P. long, slender, laxly few-flowered. Floral bracts intrudens was recently recorded in India from as long as or slightly longer than ovary, pale the Andaman and Nicobar Islands (Alappatt green, ovate-lanceolate, apex acuminate, 5–1.2 × 2017), this species has not been recorded from 2–4 mm. Pedicels with ovary cylindric-fusiform, mainland India (Kataki 1986, Chowdhery 1998, ca. 1 cm long. Flowers white, ca. 2 mm across. Hynniewta et al. 2000, Misra 2007, Rao 2007, Dorsal concave, elliptic-ovate or ovate, Ormerod 2011, Raskoti et al. 2012, Verma apex obtuse, 1-veined, ca. 3 × 1.5 mm; lateral et al. 2013, Rao and Singh 2015, Alappatt narrowly oblong, apex acute, 1-veined, 2017). Hence, it is reported here as an addition ca. 2.8 × 1.5 mm. elliptic or elliptic-ovate, to the orchid flora of mainland India. A brief acute, ca. 3.4 × 2 mm. Lip defl exed, ca. 3 mm description along with photographs is provided long, 3-lobed; lateral lobes shorter than midlobe, for easy identification in the field. Voucher spreading, narrowly triangular, apex obtuse, ca. specimens are deposited at Central National 1 mm long; midlobe oblong-lanceolate, apex Herbarium (CAL), Howrah. obtuse, ca. 1.6 × 0.5 mm; disk with a prominent sub-globose callus near base; spur green, broadly

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profusely thanks AJCB (Acharya Jagadish Kumar P., Rawat G. S. and Jalal J. S. 2010. Peristylus Chandra Bose Post Doctoral Fellowship) from sahanii, a new species of Orchidaceae from India. Kew Bull. 65: 101–104. Botanical Survey of India. Misra S. 2007. Orchids of India: A glimpse. Bishen Singh Mahendra Pal Singh, Dehra Dun. References Ormerod P. 2011. Orchidaceous additions to the Flora of Alappatt J. P. 2017. Peristylus intrudens—An addition to China. Taiwania 56(1): 42–49. the orchid flora of India from Andaman and Nicobar Prabhukumar K. M., Naveen Kumar V. V., Bhavadas Islands. Rheedea 27(1): 20–22. N., Sunil C. N., Kumar P. and Balachandran I. 2016. Chowdhery H. J. 1998. Orchids Flora of Arunachal Peristylus tentaculatus (Orchidaceae): A new record Pradesh. Bishen Singh Mahendra Pal Singh, Dehra for India from the Western Ghats of Kerala. Rheedea Dun. 26(1): 77–79. Govaerts R., Campacci M. A., Baptista D. H., Cribb P. Rao A. N. 2007. Orchid fl ora of North-East India—An up- J., George A., Kreutz K. and Wood J. J. 2017. World to-date analysis. Bull. Arunachal Forest Res. 23(1, 2): Checklist of Orchidaceae. Royal Botanic Gardens, 6–38. Kew (http://apps.kew.org/wcsp/; retrieved on 3 Jan. Rao C. S. and Singh S. K. 2015. Wild Orchids of 2017). Meghalaya—a pictorial guide. Meghalaya Biodiversity Hynniewta T. M., Kataki S. K. and Wadhwa B. M. 2000. Board. Orchids of Nagaland. Botanical Survey of India, Raskoti B. B., Rita A. and Shrestha K. 2012. Peristylus Calcutta. intrudens (Ames) Ormerod (Orchidaceae): A new Karthigeyan K., Sumathi R. and Jayanthi J. 2010. Peristylus record for flora of Nepal. J. Jpn. Bot. 87(2): 137–139. balakrishnanii (Orchidaceae), a new species from the Verma D., Singh S. K. and Mao A. A. 2013. Notes on Andaman archipelago, India. Kew Bull. 65: 491–493. diversity and distribution of tribe in Kataki S. K. 1986. Orchids of Meghalaya. Forest Meghalaya. Keanean J. Sci. 2: 83–92. Department, Shillong.

K. Prasad：インド大陸部新産の Peristylus intrudens （ラン科） インド，メガラヤ州からラン科の Peristylus intrudens 本種は P. lacertifer (Lindl.) J. J. Sm. に似るが，花が白色 (Ames) Ormerod を報告した．これは大陸部からは初め で，花弁が楕円形～卵形で，唇弁の狭三角形で側裂片よ ての報告となる．本種はこれまでにインドではアンダマ りも短く，蕊柱がやや球形である点で異なる． ン・ニコバル諸島に産することが報告されていた．ムカ （インド・Central National Herbarium, ゴトンボ属 Peristylus はインドに 34 種が知られている． Botanical Survey of India）