Curcuma kakchingense (Zingiberaceae), a new species from northeast India

Curcuma kakchingense Bidyaleima, Kishor & Sharma, a new species of Curcuma subg. Curcuma (Zingiberaceae) from Manipur, Northeast India is described and illustrated. The species has close resemblance to C. phrayawan and C. longa but is distinguished by having lemon-yellow-coloured rhizomes with a very bitter taste, glabrous dark reddish-brown bladeless sheaths, reddish-brown petiole fading towards the edges, densely pubescent coma and upper fertile bracts on both surfaces with mucronate tip, broadly ovate bracteole, elongated and revolute apex of the middle lobe of the labellum and stigma protruding through the anther lobes. The chromosome number is established as 2n = 3x = 63.

本文报道并图示了产自印度东北部曼尼普尔邦的姜科（Zingiberaceae）姜黄属（Curcuma）姜黄亚属（subg. Curcuma）一新种——*Curcuma kakchingense Bidyaleima, Kishor & Sharma*。该种与C. phrayawan及C. longa形态相近，但可通过以下特征与二者区分：根茎呈柠檬黄色且味苦至极；具无毛的暗红褐色无叶片叶鞘；叶柄呈红褐色，向边缘处色泽渐淡；密被短柔毛的顶生不育苞片群，以及两面均具骤尖头的上部可育苞片；小苞片宽卵形；唇瓣中裂片先端伸长且反卷；柱头伸出花药裂片之外。本种的染色体数目确定为2n = 3x = 63。