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A new species, a new subspecies, and new records of Hoya (Apocynaceae, Asclepiadoideae) from Myanmar and China

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Abstract

A new species, Hoya kachinensis, and a new subspecies, H. pandurata subsp. angustifolia, are described and nine new country records (H. edeni, H. fungii, H. griffithii, H. oreogena, H. pandurata, H. polyneura, H. rostellata, H. thomsonii and H. yingjiangensis) are enumerated. Hoya edeni is also newly recorded from China. Lectotypes are designated for H. acuminata, H. edeni, H. fungii, H. oreogena and H. thomsonii. Most of the species were collected during recent expeditions to Shan State and Kachin State, Myanmar. Hoya kachinensis is similar to H. griffithii in having large, glabrous oblanceolate leaves, but can be distinguished by the corolla shape, which is rotate in H. griffithii and salverform in H. kachinensis. Hoya pandurata subsp. angustifolia can be distinguished from H. pandurata subsp. pandurata by the shape of the lamina, which is lanceolate in the former, and pandurate in the latter.

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Acknowledgements

The authors would like to thank the Myanmar Forest Department and the Forest Research Institute for permission to carry out fieldwork and for their continued support of this research. Our tremendous appreciation also goes to our tireless Forest Department rangers and field assistants who made this work possible. We also thank the directors and curators of the BM, E, K, KUN, HITBC, IBSC, NY. P, A, RAF and SING herbaria for loans of specimens and access to the material studied. This research was funded in part by the US National Science Foundation (grant 1457702). Fieldwork to Shan State was supported by the Makino Botanic Garden, National Parks Board Singapore and Queen Sirikit Botanic Garden.

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Authors and Affiliations

  1. Singapore Botanic Garden, National Parks Board, 1 Cluny Road, Singapore, 259569, Singapore

    Michele Rodda

  2. Forest Research Institute, Forest Department, Ministry of Environmental Conservation and Forestry, Yezin, Myanmar

    Mu Mu Aung

  3. New York Botanical Garden, 2900 Southern Boulevard, Bronx, New York, 10458, USA

    Kate Armstrong

Authors
  1. Michele Rodda
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  2. Mu Mu Aung
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  3. Kate Armstrong
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Corresponding author

Correspondence to Michele Rodda.

Appendix 1

Appendix 1

List of the species and subspecies of Hoya recorded in Myanmar.*

Hoya acuminata (Wight) Hook.f.**; H. bella Hook.; H. burmanica Rolfe; H. carnosa R.Br.; H. collettii Schltr.; H. commutata M.G.Gilbert & P.T.Li; Hoya dickasoniana P.T.Li; H. diversifolia Blume; H. edeni King ex Hook.f.; H. erythrostemma Kerr; H. fungii Merr.; H. fusca Wall.; H. griffithii Hook.f.; H. kachinensis Rodda & Armstrong; H. kingdonwardii P.T.Li; H. lanceolata Wall. ex D.Don; H. linearis Wall.; H. longifolia Wall.; H. manipurensis Deb; H. micrantha Hook.f.; H. multiflora Blume; H. obtusifolia Wight; H. oreogena Kerr; H. pandurata Tsiang; H. panduratasubsp.angustifolia Rodda & Armstrong; H. parviflora Wall. ex Traill.; H. polyneura Hook.f.; H. retusa Dalz.; H. rostellata Kidyoo; Hoya rotundiflora Rodda & Simonsson; H. thomsonii Hook.f.; H. verticillata (Vahl) G.Don.***; H. yingjiangensis J.F. Zhang, L.Bai, N.H.Xia & Z.Q.Peng.

*New country records appear in bold.

**Cited by Kress et al. (2003) as Hoya myanmarica P.T.Li

***Cited by Kress et al. (2003) as Hoya parasitica Wall.

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Rodda, M., Aung, M.M. & Armstrong, K. A new species, a new subspecies, and new records of Hoya (Apocynaceae, Asclepiadoideae) from Myanmar and China. Brittonia 71, 424–434 (2019). https://doi.org/10.1007/s12228-019-09575-y

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