Nine new Zingiber species (Zingiberaceae) from Vietnam

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Nine new Zingiber species from vietnam are reported here. of these, Z. lecongkietii belongs to the sect. Cryptanthium, five species, Z. atroporphyreus, Z. cardiocheilum, Z. castaneum, Z. mellis and Z. plicatum, are terminally flowering species belonging to the sect. Dymczewiczia, and three species, Z. discolor, Z. microcheilum and Z. yersinii, belong to sect. Zingiber. detailed descriptions, colour plates and preliminary IUCN assessments are given for all species. as the five terminally flowering novelties more than double the previously known number of species in the Z. sect. Dymczewiczia in vietnam, a key to this section is provided.

Zingiber Miller (1754; Zingiberaceae, Zingibereae) is distributed in tropical to warm-temperate asia with the highest diversity in the monsoonal parts ofasia. It is considered the largest genus in subfamily Zingiberoideae with more than 200 names corresponding to approximately 100–150 species (Wu & Larsen 2000, kishor & Leong-Škorničková 2013).

The genus is traditionally divided into four sections based on the position of the inflorescence these are Zingiber sect. Zingiber, sect. Dymczewiczia (horaninow 1862: 26) Bentham & hooker (1883: 646), Zingiber sect. Pleuranthesis Bentham & hooker (1883: 646) and Zingiber sect. Cryptanthium horaninow 1862: 27), although a recent molecular study based on a single marker and limited material indicated that Zingiber sect. Dymczewiczia and Zingiber sect. Pleuranthesis are not well segregated from Zingiber sect. Zingiber (theerakulpisut et al. 2012). as more studies, involving broader sampling and mutiple dNa markers, are certainly needed until a new classification can be formally proposed, the traditional sectional treatment is upheld in this work.

1. Zingiber lecongkietii Škorničk. & H. Đ. Trần (sect. Cryptanthium)
Type: Jana Leong-Škorničková, Nguyễn Quốc Bình, Trần Hữu Đăng, Eliška Záveská JLS-1572 (holotype SING, isotypes E, P, PR, VNMN)

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Zingiber lecongkietii

2. Zingiber atroporphyreus Škorničk. & Q.B. Nguyễn (sect. Dymczewiczia)
Type: Q.B. Nguyễn VNM-B0002177 (holotype SING, isotype E, P, VNMN).

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Zingiber atroporphyreus

3. Zingiber cardiocheilum Škorničk. & Q.B. Nguyễn (sect. Dymczewiczia)
Type: Nguyễn Quốc Bình, Jana Leong-Škorničková, Trần Hữu Đăng, VNMN-B 1446 (holotype SING), isotypes E, P, PR, VN MN.

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Zingiber cardiocheilum

4. Zingiber castaneum Škorničk. & Q.B. Nguyễn (sect. Dymczewiczia)
Type: Nguyễn Quốc Bình & Trần Hữu Đăng VNM-B 1370 (holotype SING), isotype VN MN).

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Zingiber castaneum

5. Zingiber mellis Škorničk., H.Đ.Trần & Šídaf. (sect. Dymczewiczia)
Type: Trần Hữu Ðăng, Lê Công Kiệt, Nguyễn Duy Linh, Otakar Šída, Vũ Huy Đức 361 (holotype SING , isotypes E, VNM).

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Zingiber mellis

6. Zingiber plicatum Škorničk. & Q.B. Nguyễn (sect. Dymczewiczia)
Type: J. LeongŠkorničková,Q.B. Nguyễn & O. Šída, JLS-2170 (holotype SING , isotype VNMN).

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Zingiber plicatum

7. Zingiber discolor Škorničk.& H.Đ.Trần (sect.Zingiber)
Type: Jana LeongŠkorničková, Romana Rybková, Jan Ponert, Trần Hữu Đăng, Trịnh Tấn Thành, Trương Quang Tâm, Trương Bá Vương HB-96 (holotype VN M, isotype E, PR, SING, khu BTTN Hòn Bà).

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Zingiber discolor

8. Zingiber microcheilum Škorničk.,H.Đ. Trần & Šídaf. (sect. Zingiber)
Type: Trần Hữu Ðăng, Lê Công Kiệt, Nguyễn Duy Linh, Otakar Šída, Vũ Huy Đức 382 (holotype SING , isotypes PR, VNM).

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Zingiber microcheilum

9. Zingiber yersinii Škorničk.& H.Đ. Trần (sect.Zingiber)
Type: Jana LeongŠkorničková, Romana Rybková, Jan Ponert, Trần Hữu Đăng, Trịnh Tấn Thành, Trương Quang Tâm, Trương Bá Vương HB-77 (holotype SING, isotype E, PR, VN M, khu BTTN Hòn Bà).

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Zingiber yersinii

For more detail: Phytotaxa 219 (3): 201–220

Nine new Zingiber species (Zingiberaceae) from Vietnam

JANA LEONG-ŠKORNIČKOVÁ¹, NGUYỄN QUỐC BÌNH², TRẦN HỮU ĐĂNG¹, OTAKAR ŠÍDA³, ROMANA RYBKOVÁ⁴ & TRƯƠNG BÁ VƯƠNG⁵

1-Herbarium, Singapore Botanic Gardens, National Parks Board, 1 Cluny Road, Singapore 259569. E-mail: jana_skornickova@nparks.gov.sg
2-Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoàng Quốc Việt Street, Cầu Giấy, Hà Nội, Vietnam
3-Department of Botany, National Museum in Prague, Cirkusová 1740, Praha 9 – Horní Počernice 19000, Czech Republic
4-Prague Botanical Garden, Trojská 800/196, Praha 7 – Troja 17100, Czech Republic
5-Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Trần Quốc Toản Road, Dist. 3, Hồ Chí Minh City, Vietnam

(Phytotaxa 219 (3): 201–220)

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