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New Combinations in Senegalia and Vachellia (Leguminosae: Mimosoideae) for Southeast Asia and China

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New Combinations in Senegalia and Vachellia (Leguminosae: Mimosoideae) for Southeast Asia and China Blumea 58, 2013: 39–44 www.ingentaconnect.com/content/nhn/blumea RESEARCH ARTICLE http://dx.doi.org/10.3767/000651913X669914 New combinations in Senegalia and Vachellia (Leguminosae: Mimosoideae) for Southeast Asia and China B.R. Maslin1, D.S. Seigler2, J. Ebinger3 Key words Abstract Fragmentation of the former broadly circumscribed genus Acacia (Leguminosae: Mimosoideae) neces- sitates combinations in Senegalia (syn. Acacia subg. Aculeiferum) and Vachellia (syn. former Acacia subg. Acacia) Acacia for the following 40 taxa that are recorded for the region encompassed by Southeast Asia and China. Senegalia China andamanica, S. borneensis, S. caesia, S. comosa, S. delavayi, S. delavayi var. kunmingensis, S. donnaiensis, Leguminosae S. gageana, S. intsia, S. kekapur, S. kostermansii, S. meeboldii, S. megaladena, S. megaladena var. garrettii, S. mega­ Mimosoideae ladena var. indochinensis, S. merrillii, S. palawanensis, S. pennata subsp. hainanensis, S. pennata subsp. in­ SE Asia suavis, S. pluricapitata, S. pluriglandulosa, S. pruinescens, S. pseudointsia, S. sulitii, S. tawitawiensis, S. teniana, Senegalia S. thailandica, S. tonkinensis, S. torta, S. verheijenii, S. vietnamensis and S. yunnanensis. Vachellia harmandiana, Vachellia V. inopinata, V. kingii, V. leucophloea, V. leucophloea var. microcephala, V. myaingii, V. siamensis (syn. Acacia craibii) and V. tomentosa. Senegalia rugata replaces the well-known name Acacia concinna. There are four doubtful names for the region, namely, Acacia brunnescens, A. microcephala, A. obcordata and A. pseudoarabica. Published on 26 June 2013 INTRODUCTION relevant studies of Acacia s.lat., the most important being those of the late Ivan Nielsen (Nielsen 1980, 1981, 1985a, b Molecular and other evidence has shown that the former, and 1992) for Southeast Asian taxa and Wu De-Lin & Nielsen broadly circumscribed genus Acacia Mill. (Leguminosae: Mi­ (2010) for those from China. Unless otherwise indicated, all new mosoideae) is polyphyletic; it is now regarded as comprising combinations presented here apply to taxa that were accepted at least five genera, Acacia (s.str.), Acaciella Britton & Rose, as current under Acacia in these publications. Full synonymy Mariosousa Seigler & Ebinger, Senegalia Raf. and Vachellia (under Acacia) for these taxa is given in the above references, Wight & Arn. (see Miller & Seigler 2012 for the overview of the and in Roskov et al. (2005, which extensively cites the works new generic classification). Collectively, these genera are called of Nielsen). The only synonyms included here are basionyms Acacia s.lat. in the discussion below. Acacia is now conserved and names that were accepted as current under Acacia in the with a new type (see McNeill & Turland 2011), requiring new above works. We have also noted cases where taxonomic names in Vachellia for many taxa formerly included in Acacia opinion differs from that which we have adopted. subg. Acacia; new names are also needed for many taxa of Apart from the 40 new combinations presented here, the only the segregate genus Senegalia (syn. Acacia subg. Aculeiferum indigenous taxa of Vachellia and Senegalia in Southeast Asia Vassal). Both these genera are pantropical. and China are the following: S. catechu (L.f.) P.J.H.Hurter & Names are already available for all New World and Australian Mabb., S. chundra (Roxb. ex Rottler) Maslin, S. ferruginea (DC.) taxa of Senegalia and Vachellia, and for most taxa in the Africa/ Pedley, S. pennata, S. pennata subsp. kerrii (I.C.Nielsen) Maslin, Asia region (see Seigler & Ebinger 2005, 2010, Glass & Seigler S. rugata (see below under this species for discussion) and 2006, Kodela & Wilson 2006, Banfi & Galasso 2008, Hurter & V. nilotica subsp. indica (Benth.) Kyal. & Boatwr. and S. brevispica Mabberley in Mabberley 2008, Clarke et al. 2009, Maslin 2012, (Harms) Seigler & Ebinger subsp. brevispica (see Kyalangalilwa Kyalangalilwa et al. 2013). Therefore, apart from Madagascar et al. 2013). which has very few species, Asia and the Middle East are the Unless otherwise indicated, type information for most taxa has only regions for which combinations are needed in order that been taken from Nielsen (1980, 1981, 1985a); in the remaining all taxa of Acacia s.lat. will have names available under the cases the type citation from the protologue is provided. Type new classification. specimens have not been checked by the authors. Distributions The present paper provides combinations for the indigenous given below are taken from Roskov et al. (2005) and Wu De-Lin taxa of Southeast Asia and China that are referable to Sene­ & Nielsen (2010) unless otherwise stated. galia and Vachellia. This is not a taxonomic revision of these The geographic scope of this paper includes Southeast Asia two genera. In undertaking this work we have relied on previous and southern China. As used here the term Southeast Asia is the area extending from Myanmar (Burma), Vietnam, Laos, 1 Western Australian Herbarium, Department of Environment and Conserva- Cambodia and Thailand to the Malesian region as defined by tion, Locked Bag 104, Bentley Delivery Centre, Western Australia 6983; Van Steenis (1948). corresponding author e-mail: [email protected]. 2 Department of Plant Biology, University of Illinois, Urbana, Illinois 61801, USA. 3 Emeritus Professor of Botany, Eastern Illinois University, Charleston, Illinois 61920, USA. © 2013 Naturalis Biodiversity Center You are free to share - to copy, distribute and transmit the work, under the following conditions: Attribution: You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Non-commercial: You may not use this work for commercial purposes. No derivative works: You may not alter, transform, or build upon this work. For any reuse or distribution, you must make clear to others the license terms of this work, which can be found at http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode. Any of the above conditions can be waived if you get permission from the copyright holder. Nothing in this license impairs or restricts the author’s moral rights. 40 Blumea – Volume 58 / 1, 2013 NEW COMBINATIONS b. var. kunmingensis (C.Chen & H.Sun) Maslin, Seigler & Ebinger, comb. nov. Senegalia Raf. Acacia delavayi var. kunmingensis C.Chen & H.Sun, Acta Bot. Yunnan. 12 (syn. Acacia subg. Aculeiferum Vassal) (1990) 262. — Type: Xiangkun Deng 673 (holo KUN), Kunming (translation of Chinese script by Libing Zhang). 1. Senegalia andamanica (I.C.Nielsen) Maslin, Seigler & Ebinger, comb. nov. Distribution — China (Guizhou, Yunnan). Acacia andamanica I.C.Nielsen, Adansonia sér. 2, 19 (1980) 354. — Type: King’s Collector s.n. (lecto K, Nielsen 1980: 354), Andaman Isl. 6. Senegalia donnaiensis (Gagnep.) Maslin, Seigler & Ebinger, comb. nov. Distribution — India (Andaman Islands), Thailand. Acacia donnaiensis Gagnep., Not. Syst. (Paris) 2 (1911) 114. — Type: Harmand 965 (lecto P, Nielsen 1980: 349), Vietnam, bords du Donnai, 2. Senegalia borneensis (I.C.Nielsen) Maslin, Seigler & Ebin- Nov. 1876. ger, comb. nov. Distribution — Cambodia, Vietnam (southern), Malaysia Acacia borneensis I.C.Nielsen, Opera Bot. 81 (1985) 20, f. 9 (7–13). — Type: (Sabah), Indonesia (Kalimantan). Endert 2189 (holo L; iso A, K), Borneo, C.E. Kalimantan, W. Kutai, m. 10/11 near Mt Antjaloeng, 15 m, 24 July 1925. 7. Senegalia gageana (Craib) Maslin, Seigler & Ebinger, comb. Distribution — Indonesia (Kalimantan), Malaysia (Sabah). nov. Acacia gageana Craib, Bull. Misc. Inform. Kew (1915) 409. — Type: J.D. 3. Senegalia caesia (L.) Maslin, Seigler & Ebinger, comb. nov. Hooker s.n. (holo K; iso CAL, Chakrabarty & Gangopadhyay 1996: 604), Mimosa caesia L., Sp. Pl. ed.1, 1 (1753) 522. — Acacia caesia (L.) Willd. India, Sikkim. (1806) 1090. — Lectotype: Herb. Herman 2: 50, No. 217, BM (Rico in Turland & Jarvis 1997: 475). Distribution — Pakistan, Nepal, Bhutan, India, Bangladesh; also recorded for Myanmar (Burma) by Kress et al. (2003: 299). Distribution — India, Sri Lanka, Bhutan, Bangladesh, Myan- mar (Burma), central and southern China (Guangdong, Hainan, Note — Sanjappa (1992: 40), Kumar & Sane (2003: 86), Sichuan & Yunnan Provinces), Thailand, Laos, Cambodia, Kress et al. (2003) and Roskov et al. (2005) recognize this entity Vietnam, Taiwan. as a distinct species, but Chakrabarty & Gangopadhyay (1996: 604, 606) consider it conspecific with A. (Senegalia) caesia. Notes — Although A. caesia var. subnuda is recognized by Roskov et al. (2005), based on the works of Nielsen (1981: 53) and Sanjappa (1992: 37), it is regarded as conspecific with 8. Senegalia intsia (L.) Maslin, Seigler & Ebinger, comb. nov. A. caesia by Chakrabarty & Gangopadhyay (1996: 604) and Mimosa intsia L., Sp. Pl. (1753) 522. — Lectotype: ‘Inja’ in Rheede, Hort. Wu De-Lin & Nielsen (2010: 57). We have therefore followed Malab. 6 (1686) t. 4 [icon], (Rico in Turland & Jarvis 1997: 476). the most recent taxonomy in not recognizing the variety here. Distribution — Nepal, India, Sri Lanka, Bangladesh, Myan- However, it should be noted that Nielsen should have adopted mar (Burma). the name var. oxyphylla for this taxon; therefore, if this entity is ever recognized as a variety, either in Acacia or Senegalia, then Note — Acacia intsia is recognized as a distinct species by the combination based on A. oxyphylla will need to be made. Sanjappa (1992: 40), Kumar & Sane (2003: 87) and Roskov et Although Roskov et al. (2005) list A. caesia as occurring in al.
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