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Download Download PLATINUM The Journal of Threatened Taxa (JoTT) is dedicated to building evidence for conservaton globally by publishing peer-reviewed artcles OPEN ACCESS online every month at a reasonably rapid rate at www.threatenedtaxa.org. All artcles published in JoTT are registered under Creatve Commons Atributon 4.0 Internatonal License unless otherwise mentoned. JoTT allows unrestricted use, reproducton, and distributon of artcles in any medium by providing adequate credit to the author(s) and the source of publicaton. Journal of Threatened Taxa Building evidence for conservaton globally www.threatenedtaxa.org ISSN 0974-7907 (Online) | ISSN 0974-7893 (Print) Note Bulbophyllum spathulatum (Orchidaceae), a new record for Bhutan Pema Zangpo, Phub Gyeltshen & Pankaj Kumar 26 January 2021 | Vol. 13 | No. 1 | Pages: 17592–17596 DOI: 10.11609/jot.6393.13.1.17592-17596 For Focus, Scope, Aims, Policies, and Guidelines visit htps://threatenedtaxa.org/index.php/JoTT/about/editorialPolicies#custom-0 For Artcle Submission Guidelines, visit htps://threatenedtaxa.org/index.php/JoTT/about/submissions#onlineSubmissions For Policies against Scientfc Misconduct, visit htps://threatenedtaxa.org/index.php/JoTT/about/editorialPolicies#custom-2 For reprints, contact <[email protected]> The opinions expressed by the authors do not refect the views of the Journal of Threatened Taxa, Wildlife Informaton Liaison Development Society, Zoo Outreach Organizaton, or any of the partners. The journal, the publisher, the host, and the part- Publisher & Host ners are not responsible for the accuracy of the politcal boundaries shown in the maps by the authors. Member Threatened Taxa Journal of Threatened Taxa | www.threatenedtaxa.org | 26 January 2021 | 13(1): 17592–17596 ISSN 0974-7907 (Online) | ISSN 0974-7893 (Print) PLATINUM OPEN ACCESS htps://doi.org/10.11609/jot.6393.13.1.17592-17596 #6393 | Received 11 July 2020 | Final received 04 October 2020 | Finally accepted 07 January 2021 NOTE Bulbophyllum spathulatum (Orchidaceae), a new record for Bhutan Pema Zangpo 1 , Phub Gyeltshen 2 & Pankaj Kumar 3 1 Gomphu Range Ofce, Royal Manas Natonal Park, Department of Forest and Park Services, MoAF, Gelephu, Bhutan. 2 Bumthang Forest Division, Department of Forest and Park Services, MoAF, Trongsa, Bhutan. 3 Kadoorie Farm and Botanic Garden, Lam Kam Road, Lam Tsuen, Tai Po, New Territories, Hong Kong S.A.R., P.R. China. 1 [email protected], 2 [email protected], 3 [email protected] (corresponding author) Bulbophyllum Thouars (1822) is one of the largest under the genus Bulbophyllum by Seidenfaden (1970) genera in family Orchidaceae comprising approximately as Bulbophyllum spathulatum. Alternatvely, Garay et al. 2,200 species, distributed in the tropical and subtropical (1994) described a new genus as Rhytonanthos where regions of the world with the richest diversity in the based on fusion of lateral sepals to form a synsepal tropics of Africa and Asia (Pearce & Cribb 2002; Chen by inward twistng and connaton of their edges and & Vermeulen 2009; Chase et al. 2015; Gyeltshen et al. included Bulbophyllum spathulatum as Rhytonanthos 2020). In Bhutan, the genus is represented by 57 species spathulata, however, this concept has changed. The from 13 sectons distributed mostly in eastern, western, genus Rhytonanthos has now been merged under and southern parts of Bhutan (Gurung 2006; Dalstrom et Bulbophyllum (Pridgeon et al. 2014) and accordingly al. 2017; Gyeltshen et al. 2020). followed thereafer (Govaerts et al. 2020). During a recent foristc exploraton in the Subrang Bulbophyllum spathulatum had been included in the and Pantang under Zhemgang District in 2019, the frst Orchids of Bhutan by Pearce & Cribb (2002) based on its author encountered a small populaton of an unfamiliar occurrence in adjacent areas in India, however, it was orchid growing on a tree. For inital examinaton never collected from within the politcal boundaries of sufcient photographs were taken. Afer critcal Bhutan. Hence, the present collecton of the species examinaton of morphological parts, careful scrutny of from Zhemgang District, Bhutan stands as a new herbarium materials and literatures (Reichenbach 1970; record for Bhutan. Later, plants were also discovered Seidenfaden 1970, 1973; Garay et al. 1994; Pearce & at one more area in Zhemgang District followed by Cribb 2002; Chen & Vermeulen 2009; Averyanov 2016), two sites in Wangduephodrang District, however, no this species was identfed as Bulbophyllum spathulatum voucher specimens were collected due to the rarity (Rolfe ex E.Cooper) Seidenf. and this is a new record for of the species. Detailed morphological descriptons, Bhutan (Figure 1). updated distributon, phenology, and ecology along with Originally described as Cirrhopetalum spathulatum distributon map and colour photographs are provided Rolfe ex E.W.Cooper, this species was circumscribed based on the collected specimens. Editor: Anonymity requested. Date of publicaton: 26 January 2021 (online & print) Citaton: Zangpo, P., P. Gyeltshen & P. Kumar (2021). Bulbophyllum spathulatum (Orchidaceae), a new record for Bhutan. Journal of Threatened Taxa 13(1): 17592–17596. htps://doi.org/10.11609/jot.6393.13.1.17592-17596 Copyright: © Zangpo et al. 2021. Creatve Commons Atributon 4.0 Internatonal License. JoTT allows unrestricted use, reproducton, and distributon of this artcle in any medium by providing adequate credit to the author(s) and the source of publicaton. Funding: Self funded. Competng interests: The authors declare no competng interests. Acknowledgements: We express our sincere grattude to Director General of Department of Forest and Park Services; Mr. Samten Wangchuk, Chief Forestry Ofcer and staf of Royal Manas Natonal Park motvaton and encouragement. Authors also extend thanks to Mr. Sangay Tshewang of Jigme Singye Wangchuck Natonal Park for sharing informaton about the distributon of B. spathulatum in Wangdue Dzongkhag. 17592 Bulbophyllum spathulatum - new record for Bhutan Zangpo et al. J TT Figure 1. Distributon of Bulbophyllum spathulatum at Pangkhar block in Zhemgang District in Bhutan. Bulbophyllum spathulatum (Rolfe ex. Cooper) glabrous, obliquely notched on the pseudobulb, Seidenf. Bot. Tidsskr. 65: 347 (1970); Cirrhopetalum conduplicate. Inforescences arising from the base of spathulatum Rolfe ex. Cooper in Orchid Rev. 37: 106 the pseudobulbs, sub-umbellate, ca. 6.5–7.0 cm long, (1929); Rhytonanthos spathulatum (Rolfe ex Cooper) 4–10 fowers, erect; peduncle with 4–5 sheaths, 1.5–2.5 Garay, Hemer & Siegerist in Nordic J. Bot. 14(6): 639 cm long, pale yellow with mauve streaks and spoted (1994). towards apex, sheathing bracts broadly ovoid to oblong- Type: Thailand, Bangkok, Roebelen 292-12 ovoid, 0.8–1.2 cm x 0.7–0.9 cm wide, thin, glabrous, (K000829943) (K!-Holotype). basal bracts turning brownish with the age. Flowers, Epiphytc herb. Roots terete, ca. 1mm thick, 4.2–5.0 cm long including pedicel and ovary, resupinate, caespitose. Rhizome creeping, terete, 2.5–9.3 cm long, golden-yellow with reddish-brown spoted. Floral 1.5–3.0 mm wide, covered with membranous sheaths, bracts oblong–lanceolate, 10–14 × 4–5 mm, thin, margin old sheaths brownish, new sheaths greenish-yellow entre, apex acute, base truncate, glabrous, whitsh- with purplish-mauve spoted, 1.0–1.5 cm long, 1.0–1.2 pink, three-veined. Pedicel and ovary pale yellow with cm wide, persistent, internodes of rhizome 1.0–1.4 cm reddish-maroon spots, 1.5–2.5 cm long, 1.5–2.0 mm long. Pseudobulbs cylindrical-ovoid, narrowly-ovoid, wide. Dorsal sepals obovate, 7.5–9.0 × 4.0–4.5 mm 1.5–4.0 cm x 0.6–1.5 cm wide, 2.5–9.3 cm apart from when fatened, yellowish-green with reddish-brown each other on the rhizome, glabrous, greenish-yellow, spots mostly in the middle, two prominent reddish spots brownish-pale yellow with the age, longitudinal ridges at the base, margin entre, apex obtuse and slightly present, bearing a solitary leaf at the apex. Leaf blade mucronate, base truncate, abaxially glabrous, adaxially green, linear-oblong to oblong-elliptc, 3.5–15.0 cm papillose, concave, three-veined. Lateral sepals fused to long, 1.3–2.5 cm wide, entre, apex sub-acute or obtuse, form slipper-shape, 1.6–2.2 cm long, 5.5–6.5 mm wide, base atenuate, adaxially glabrous, abaxially whitsh- upper and lower edges connate to forming a synsepal; brown spoted and occasionally purple coloured, feshy, synsepal 10–11 mm wide, golden-yellow with reddish- coriaceous to leathery. Petole yellowish-green, 0.4–1.0 brown, outer surface minutely warty with white papillae cm long, ca. 0.2 cm wide, longitudinally channeled, including margins, apex rounded and slightly incurved, Journal of Threatened Taxa | www.threatenedtaxa.org | 26 January 2021 | 13(1): 17592–17596 17593 J TT Bulbophyllum spathulatum - new record for Bhutan Zangpo et al. A B C D E F G H Image 1. Bulbophyllum spathulatum (Rolfe ex E.W.Cooper) Seidenf.: A & B—Plant in habitat | C—inforescence | D—top view of fowers | E— fruit and fower shoot | F—fowers (adaxial and abaxial surface view) | G—dorsal se pal, petals and lateral sepals (adaxial view) | H—column and lip atached to ovary (lateral view). © A–E - Pema Zangpo; F–H - Phub Gyeltshen. base obliquely truncate to rounded when dissected, base obliquely truncate, surface glaucous, lef petal two prominent reddish-maroon spots at base. Petals slightly longer than the right petal. Lip thick and feshy, oblong to oblong-lanceolate, 4.0–5.0 × 1.2–2.0 mm, ovate–lanceolate, 4–4.2 mm long, 1.5–2.0 mm wide, yellow with deep maroon-purplish, falcate towards lef, glabrous, side ridges present, margin entre, mobile, slightly incurved, margin entre, revolute, apex obtuse, recurved, base with reddish-brown and yellow towards 17594 Journal of Threatened Taxa | www.threatenedtaxa.org | 26 January 2021 | 13(1): 17592–17596 Bulbophyllum spathulatum - new record for Bhutan Zangpo et al. J TT A B F G H E I J C D K L M N O P Q Image 2.
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