Impatiens nanlingensis sp. nov. (Balsaminaceae) from Guangdong,China

Impatiens nanlingensis A. Q. Dong & F. W. Xing, a new species of Impatiens (Balsaminaceae) from Guangdong, China, is described and illustrated. It is morphologically similar to I. jinggangensis Y. L. Chen, but differs mainly by its lateral united petals; basal lobes suborbicular, marked with yellow stripes; distal lobes narrowly caudate, apex tailed. It also resembles I. bicornuta, but I. bicornuta differs mainly in its longer peduncles, up to 25 cm, pale blue–purple flowers and broadly sigmoid‐curved–saccate lower sepal.     

Stimpsonia nanlingensis sp. nov. (Primulaceae) from Guangdong,China

A new species of Stimpsonia (Primulaceae), S. nanlingensis G.H. Huang & G. Hao, from Guangdong, China, is described and illustrated as the second species in the genus. In general morphology it resembles S. chamaedryoides but can be distinguished by its foliose bracts and a corolla with a shorter tube and shorter truncate or obtuse lobes.     

Zingiber pseudosquarrosum sp. nov. (Zingiberaceae) from Andaman and Nicobar Islands,India

Zingiber pseudosquarrosum L. J. Singh & P. Singh sp. nov. (Zingiberaceae) from Andaman and Nicobar Islands, India is described and illustrated and its conservation status is evaluated. This new species seems related to Z. squarrosum Roxb. but can be distinguished by the presence of a small pseudostem, long ligule and petiole, broadly lanceolate leaves with cuneate base, caudate apex and paxillate venation, urceolate or prolate inflorescences, very long underground peduncle, long calyx, very long corolla tube, labellum deep purple red (claret) at centre, orange red (vermillion) at lateral sides with ivory (off white) spots, tip truncate and slightly notched, margin folded back, stamen with short filament, yellow orange anther, light brown ovary, blood red (cinnabar) seeds covered by a white aromatic aril. A key to the species of Zingiber Mill. from the Andaman and Nicobar Islands is also provided.     

Curcuma gulinqingensis sp. nov. (Zingiberaceae) from Yunnan,China

A new species of Curcuma L. is described and illustrated, viz. Curcuma gulinqingensis N. H. Xia & Juan Chen. The new species is similar to C. amarissima Roscoe, but differs in the following characters: rhizomes lemon yellow inside; blades with a ca 2 cm broad purple cloud along the midrib above the middle, glabrous; coma bracts pale red, purple except the white base, elliptic, obtuse at apex; fertile bracts pale green with purple around the margin and the top, elliptic, obtuse at apex.     

Taxonomic studies on Zingiber (Zingiberaceae) in China IV: Z. pauciflorum sp. nov. from Yunnan

Zingiber pauciflorum L.Bai, ?korni?k., D.Z.Li & N.H.Xia (Zingibereae, Zingiberaceae), a new species from southern Yunnan, China, is described and colour plates are provided. It belongs to Z . sect. Cryptanthium Horan. and is compared with three similar species, namely Z. tenuifolium L.Bai, ?korni?k. & N.H.Xia, Z. smilesianum Craib and Z. yunnanense S.Q.Tong & X.Z.Liu. A colour plate of the most similar species, Z. smilesianum is also provided for comparison.     

Zingiberanamalayanum sp. nov. (Zingiberaceae) from India

Zingiber anamalayanum (Zingiberaceae), a new species from the southern western Ghats, India is described and illustrated. A phenetic analyses to assess the similarity indices and the uniqueness of the new species have been performed. A diagnostic key to Zingiber spp. in south India is provided.     

Geostachys angustifolia sp. nov. (Zingiberaceae) from Thailand

A new species of Geostachys (Bak.) Ridl. is described, G. angustifolia K. Larsen sp. nov., and a key to all species of the genus found in Thailand, Cambodia and Vietnam is presented.     

Primulina maciejewskii sp. nov. (Gesneriaceae) from Guangdong,China

Primulina maciejewskii F. Wen, R.L. Zhang & A.Q. Dong, a new species of Primulina (Gesneriaceae) from Guangdong, China, is described and illustrated. It is similar to P. lobulata and P. danxiaensis in leaf and flower shape, but can be distinguished by bract shape, peduncle, pedicel, and bract size, filament and anther indumentum, and number of bracts, staminodes and stigma.     

Manglietia guangzhouensis sp. nov. (Magnoliaceae) from Guangdong, China

Manglietia guangzhouensis A. Q. Dong, Q. W. Zeng & F. W. Xing, a new species of Magnoliaceae from Guangdong province, China, is described and illustrated. It is closely related to M. pachyphylla H. T. Chang, but differs primarily in its brown villose lower surface of leaves, brown tomentose and stout brachyblasts (peduncles), absence of pedicels, sparsely brown pubescent outer tepals and more numerous ovules (12–14) in each carpel. It is a very rare species with a highly restricted distribution.     

Hedyotis nankunshanensis sp. nov. (Rubiaceae) from Guangdong,China

Hedyotis nankunshanensis R.‐J. Wang & S.‐J. Deng sp. nov. from China, is described and illustrated. It is morphologically similar to H. cantoniensis How ex Ko, but differs by having a pleiochasium inflorescence, hollow peduncles and stems, and different flowering season. Phylogenetic analysis inferred from nuclear internal transcribed spacers (ITS) and plastid petD sequences of 17 taxa revealed that H. nankunshanensis is an independent lineage that is closely related to H. cantoniensis and H. consanguinea Hance. Pollen ultrastructure was observed by SEM and described.     

Dendrobium shixingense sp. nov. (Orchidaceae) from Guangdong,China

Dendrobium shixingense Z.‐L. Chen, S.‐J. Zeng et J. Duan sp. nov. (Orchidaceae), is described and illustrated from Guangdong, China; it is compared with its nearest allies, D. scoriarum, D. flexicaule and D. officinale.     

Microtropis shenzhenensis sp. nov. (Celastraceae) from Guangdong,China

Microtropis shenzhenensis L. Chen & F. W. Xing sp. nov. (Celastraceae), a new species from Shenzhen, China, is described and illustrated. It is compared with the morphologically similar species M. tetragona.     

Ainsliaea asaroides sp. nov. (Asteraceae) from Guangdong,China

Ainsliaea asaroides Y. S. Ye, Jun Wang & H. G. Ye (Asteraceae), a new species from Guangdong, China, is described and illustrated. The new species resembles A. gracilis Franch. but can be distinguished by its sub‐leathery, cordate leaves, villose petiole, thyrsoid inflorescence and the number of florets. A key to allied species is provided.     

Microlepia boluoensis sp. nov. (Dennsteadtiaceae) from Guangdong,China

Microlepia boluoensis Y. Yuan & L. Fu, a new species of the genus Microlepia from Luofu mountain, Boluo county, Guangdong province, China, is described and illustrated. Its gametophytic chromosome number is n =47. Microlepia boluoensis has a similar morphology to M. scyphoformis, M. speluncae and M. hancei, such as creeping rhizomes, bipinnate‐tripinnatified laminas, intramarginal sori, cup‐shaped indusium and trilete spores, but it has a shorter creeping rhizome, larger frond (up to 351 cm), dry chartaceous, longer stipe (up to 139 cm), 23 pairs of primary pinnae, 1–13 sori, and spores with a distinct and raised laesurae.     

Globba chekiangensis sp. nov. (Zingiberaceae) from the Zhejiang and Jiangxi provinces, China

Globba chekiangensis from the Zhejiang and Jiangxi provinces in east China is described, illustrated and compared with its nearest allies, G. emeiensis and G. racemosa .     

Curcuma pambrosima sp. nov. (Zingiberaceae) from central Vietnam

Curcuma pambrosima (Zingiberaceae), a new species from central Vietnam, is described and illustrated.     

Alpinia newmanii sp. nov. (Zingiberaceae) from central Vietnam

Alpinia newmanii, a new species from central Vietnam, is described and illustrated. A morphological comparison with the most closely related species and a key to the species of Alpinia subsection Catimbium in Vietnam are provided.