数据列表:
莠竹属 : 植物 | eFloras | 来源:http://www.efloras.org/
莠竹属 : 植物 | 中国植物物种信息 | 来源:http://www.plants.csdb.cn/
莠竹属 : 植物 | 中国植物物种信息-云南植物志 | 来源:http://www.plants.csdb.cn/
莠竹属 : 植物 | 中国种子植物 | 来源:中国种子植物光盘

Efloras
所属科:Poaceae
父拉丁名:Poaceae
分类等级:属

Microstegium

莠竹属
Accepted Name
原始页面连接:www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=120657
出处:Flora of China
所在卷:FOC Vol. 22
195. Microstegium Nees in Lindley, Nat. Syst. Bot., ed. 2. 447. 1836.

莠竹属 you zhu shu

Authors:Xi-wen Li, Jie Li, Peter Stevens, Huaxing Qiu, Michael G. Gilbert, Huaxing Qiu, Michael G. Gilbert, Huaxing Qiu, Michael G. Gilbert, Bingtao Li, Michael G. Gilbert, Bingtao Li, Hans-Joachim (Hajo) Esser, Huaxing Qiu, Michael G. Gilbert, Huaxing Qiu, Michael G. Gilbert, Zhi Wei, Dezhao Chen, Prof. Dianxiang Zhang, Hang Sun, Les Pedley, Ren Sa, Delin Wu, Dezhao Chen, Prof. Dianxiang Zhang, Hang Sun, Puhua Huang, Michael G. Gilbert, Mats Thulin, C. Melanie Wilmot-Dear, Hiroyoshi Ohashi, Zhi Wei, Les Pedley, Delin Wu, Mats Thulin, Ren Sa, C. Melanie Wilmot-Dear, Langran Xu, Byoung-Hee Choi, Xiangyun Zhu, Stanley L. Welsh, Hiroyoshi Ohashi, Delin Wu, Mats Thulin, Bojian Bao, Anthony R. Brach, Ren Sa, Michael G. Gilbert, Xiangyun Zhu, Kai Larsen, Yingxin Liu, Chang Zhaoyang, Gennady P. Yakovlev, Ren Sa, Michael G. Gilbert, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Kai Larsen, Supee Saksuwan Larsen, Zhi Wei, Roger M. Polhill, Michael G. Gilbert, Langran Xu, Dietrich Podlech, Xiangyun Zhu, Stanley L. Welsh, Hiroyoshi Ohashi, Ren Sa, Michael G. Gilbert, Dezhao Chen, Prof. Dianxiang Zhang, Mats Thulin, Xi-wen Li, Jie Li, Henk van der Werff, Xi-wen Li, Jie Li, Henk van der Werff, Xi-wen Li, Jie Li, Henk van der Werff, Xi-wen Li, Jie Li, Henk van der Werff, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Stephan W. Gale, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Jin Xiaohua, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Paul Ormerod, Xinqi Chen, Yi-Bo Luo, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Paul Ormerod, Shou-liang Chen, Sylvia M. Phillips, Zhen-lan Wu, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Nianhe Xia, Chris Stapleton, Sheng-lian Lu, Sylvia M. Phillips, De-Zhu Li, Chris Stapleton, Zhen-lan Wu, Paul M. Peterson, Shou-liang Chen, Sylvia M. Phillips, De-Zhu Li, Chris Stapleton, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Mingli Zhang, Christopher Grey-Wilson, Mingli Zhang, Christopher Grey-Wilson, Mingli Zhang, Christopher Grey-Wilson, Mingli Zhang, Magnus Lidén, Mingli Zhang, Magnus Lidén, Mingli Zhang, Christopher Grey-Wilson, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Stephen A. Renvoize, Shou-liang Chen, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Bi-xing Sun, Sylvia M. Phillips, Nianhe Xia, Liang-zhi Jia, Chris Stapleton, Zhen-lan Wu, Sylvia M. Phillips, Zhen-lan Wu, Sylvia M. Phillips, De-Zhu Li, Chris Stapleton, De-Zhu Li, Chris Stapleton, Prof. Dianxiang Zhang, Thomas G. Hartley, Prof. Dianxiang Zhang, Thomas G. Hartley, Prof. Dianxiang Zhang, Thomas G. Hartley, Prof. Dianxiang Zhang, Thomas G. Hartley, Yinzheng Wang, Michael G. Gilbert, Hui Ren, Jun Wen, Liu Quanru, Michele Funston, Liu Quanru, Michele Funston, Jin-shuang Ma, Michele Funston, Cuizhi Gu, Ching-I Peng, Nicholas J. Turland, Ya Tang, Michael G. Gilbert, Laurence J. Dorr, Wei-liang Ma, Bruce Bartholomew, Tianlu Min, Anthony R. Brach, Shu-kun Chen, Sir Ghillean (Iain) T. Prance, Shugang Li, Michael G. Gilbert, Frank White, Shugang Li, Langran Xu, Dezhao Chen, Xiangyun Zhu, Puhua Huang, Zhi Wei, Ren Sa, Prof. Dianxiang Zhang, Bojian Bao, Delin Wu, Hang Sun, Gao Xinfen, Supee S. Larsen, Ivan Nielsen, Dieter Podlech, Yingxin Liu, Hiroyoshi Ohashi, Chang Zhaoyang, Kai Larsen, Jianqiang Li, Stanley L. Welsh, Michael A. Vincent, Mingli Zhang, Michael G. Gilbert, Les Pedley, Brian D. Schrire, Gennady P. Yakovlev, Mats Thulin, Ivan C. Nielsen, Byoung-Hee Choi, Nicholas J. Turland, Roger M. Polhill, Supee Saksuwan Larsen, Ding Hou, Yu Iokawa, C. Melanie Wilmot-Dear, Gregory Kenicer, Tomoyuki Nemoto, J. Michael Lock, Alfonso Delgado Salinas, Tatiana E. Kramina, Anthony R. Brach, Bruce Bartholomew, Dmitry D. Sokoloff, Shugang Li, Xi-wen Li, Jie Li, Puhua Huang, Fa-Nan Wei, Hongbin Cui, Henk van der Werff, Delin Wu, Helen Kennedy, Huaxing Qiu, Paul Hiepko, Hua Peng, Wm. Wayt Thomas, Bruce Bartholomew, Jenny Qiuyun Xiang, David E. Boufford, Liu Quanru, Lihua Zhou, Bingtao Li, Michael G. Gilbert, Bingtao Li, Michael G. Gilbert, Bingtao Li, Stefan Dressler, Bingtao Li, Michael G. Gilbert, Huaxing Qiu, Michael G. Gilbert, Bingtao Li, Hans-Joachim (Hajo) Esser, Huaxing Qiu, Michael G. Gilbert, Huaxing Qiu, Michael G. Gilbert, Bingtao Li, Michael G. Gilbert, Bingtao Li, Michael G. Gilbert, Hang Sun, Bruce Bartholomew, Zhi Wei, Michael A. Vincent, Ren Sa, Michael G. Gilbert, Dezhao Chen, Prof. Dianxiang Zhang, Kai Larsen, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Dezhao Chen, Prof. Dianxiang Zhang, Mats Thulin, Dezhao Chen, Les Pedley, Puhua Huang, Hiroyoshi Ohashi, Prof. Dianxiang Zhang, Les Pedley, Jianqiang Li, Roger M. Polhill, Michael G. Gilbert, Bojian Bao, Nicholas J. Turland, Zhi Wei, Les Pedley, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Zhi Wei, Les Pedley, Langran Xu, Kai Larsen, Ren Sa, Michael G. Gilbert, Puhua Huang, Hiroyoshi Ohashi, Langran Xu, Byoung-Hee Choi, Zhi Wei, Les Pedley, Dezhao Chen, Prof. Dianxiang Zhang, Kai Larsen, Delin Wu, Ivan C. Nielsen, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Kai Larsen, Supee Saksuwan Larsen, Bojian Bao, Nicholas J. Turland, Gregory Kenicer, Puhua Huang, Hiroyoshi Ohashi, Puhua Huang, Hiroyoshi Ohashi, Tomoyuki Nemoto, Puhua Huang, Hiroyoshi Ohashi, Yu Iokawa, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Bojian Bao, Nicholas J. Turland, Bojian Bao, Kai Larsen, Ren Sa, Michael G. Gilbert, Ren Sa, Michael G. Gilbert, Ren Sa, Michael G. Gilbert, Ren Sa, Michael G. Gilbert, Hang Sun, Michael A. Vincent, Dezhao Chen, Les Pedley, Ren Sa, Michael G. Gilbert, Hang Sun, Bruce Bartholomew, Puhua Huang, Henk van der Werff, Puhua Huang, Hiroyoshi Ohashi, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Dudley Clayton, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Zhanhe Ji, Guanghua Zhu, Liu Zhongjian, Yi-Bo Luo, Jin Xiaohua, Jeffrey J. Wood, Phillip J. Cribb, Stephan W. Gale, Jaap J. Vermeulen, Paul Ormerod, Howard P. Wood, Dudley Clayton, Alexandra Bell, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Yi-Bo Luo, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Jiarui Chen, Peter C. Hoch, Peter H. Raven, Hua Peng, David J. Mabberley, Bi-xing Sun, Sylvia M. Phillips, De-Zhu Li, Chris Stapleton, Zheng-ping Wang, Chris Stapleton, Liang Liu, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Bi-xing Sun, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, De-Zhu Li, Chris Stapleton, Zhen-lan Wu, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Liang Liu, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Liang Liu, Sylvia M. Phillips, Mingli Zhang, Magnus Lidén, Yinzheng Wang, David Hearn, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Paul M. Peterson, Shou-liang Chen, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Liang Liu, Nikolai N. Tzvelev, Shou-liang Chen, Sylvia M. Phillips, De-Zhu Li, Chris Stapleton, Zhen-lan Wu, Sylvia M. Phillips, Zhen-lan Wu, Sylvia M. Phillips, Bi-xing Sun, Sylvia M. Phillips, Dezhao Chen, Prof. Dianxiang Zhang, Supee Saksuwan Larsen, Michael A. Vincent, Dezhao Chen, Les Pedley, Dequan Lu, Heidrun E. K. Hartmann, Shu-kun Chen, Haiying Ma, Yuxing Feng, Gabrielle Barriera, Pierre-André Loizeau, Zhengyi Wu, Zhe-Kun Zhou, Bruce Bartholomew, Dezhi Fu, Peter K. Endress, Haining Qin, Anthony R. Brach, Ruizheng Fang, Constance Lincoln, Delin Wu, W. John Kress, Bingtao Li, Thomas K. Wilson, Liu Quanru, Mark Watson, Tianlu Min, Bruce Bartholomew, Hua Peng, Michael G. Gilbert, De-Zhu Li, Cai Jie, Jun Wen, Prof. Zhiduan Chen, Hui Ren, Jun Wen, Bingtao Li, Michael G. Gilbert, Bingtao Li, Michael G. Gilbert, Bingtao Li, Stefan Dressler, Huaxing Qiu, Michael G. Gilbert, Bingtao Li, Hans-Joachim (Hajo) Esser, Bingtao Li, Michael G. Gilbert, Zhi Wei, Michael G. Gilbert, Delin Wu, Mats Thulin, Bojian Bao, Nicholas J. Turland, Ren Sa, Michael G. Gilbert, Langran Xu, Mingli Zhang, Dietrich Podlech, Dezhao Chen, Prof. Dianxiang Zhang, Mats Thulin, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Puhua Huang, Hiroyoshi Ohashi, Bojian Bao, Michael A. Vincent, Delin Wu, Mats Thulin, Jianqiang Li, Hang Sun, Roger M. Polhill, Michael G. Gilbert, Hang Sun, Brian D. Schrire, Bojian Bao, Michael G. Gilbert, Zhi Wei, Michael G. Gilbert, Dezhao Chen, Prof. Dianxiang Zhang, Kai Larsen, Langran Xu, Xiangyun Zhu, Bojian Bao, Mingli Zhang, Hang Sun, Dietrich Podlech, Stanley L. Welsh, Hiroyoshi Ohashi, Kai Larsen, Anthony R. Brach, Puhua Huang, Hiroyoshi Ohashi, Dezhao Chen, Prof. Dianxiang Zhang, Kai Larsen, Hang Sun, Bruce Bartholomew, Xiangyun Zhu, Kai Larsen, Zhi Wei, Les Pedley, Dezhao Chen, Les Pedley, Zhi Wei, Les Pedley, Dezhao Chen, Prof. Dianxiang Zhang, Mats Thulin, Delin Wu, Mats Thulin, Ren Sa, Michael G. Gilbert, Delin Wu, Mats Thulin, Delin Wu, Mats Thulin, Delin Wu, Mats Thulin, Xi-wen Li, Jie Li, Henk van der Werff, Xi-wen Li, Jie Li, Henk van der Werff, Xi-wen Li, Jie Li, Henk van der Werff, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Phillip J. Cribb, Stephan W. Gale, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Yi-Bo Luo, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Jiarui Chen, Peter C. Hoch, Peter H. Raven, Zhen-lan Wu, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Bi-xing Sun, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Stephen A. Renvoize, Shou-liang Chen, Sylvia M. Phillips, Liang Liu, Nikolai N. Tzvelev, Shou-liang Chen, Sylvia M. Phillips, Liang Liu, Guanghua Zhu, Klaus Ammann, Bi-xing Sun, Sylvia M. Phillips, Zhen-lan Wu, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Zhen-lan Wu, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Mingli Zhang, Magnus Lidén, Mingli Zhang, Magnus Lidén, Mingli Zhang, Christopher Grey-Wilson, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Zhen-lan Wu, Sylvia M. Phillips, Guanghua Zhu, Liang Liu, Marina V. Olonova, Shou-liang Chen, Sylvia M. Phillips, Bi-xing Sun, Sylvia M. Phillips, Shou-liang Chen, Stephen A. Renvoize, Bi-xing Sun, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Sheng-lian Lu, Sylvia M. Phillips, Nianhe Xia, Liang-zhi Jia, De-Zhu Li, Chris Stapleton, Nianhe Xia, Chris Stapleton, De-Zhu Li, Chris Stapleton, Shou-liang Chen, Sylvia M. Phillips, Bi-xing Sun, Sylvia M. Phillips, Zhen-lan Wu, Sylvia M. Phillips, Prof. Dianxiang Zhang, Thomas G. Hartley, Prof. Dianxiang Zhang, Thomas G. Hartley, Prof. Zhiduan Chen, Jun Wen, Hua Peng, Michele Funston, Bojian Bao, Thomas Borsch, Steven E. Clemants, Mingli Zhang, Gordon C. Tucker, Yinzheng Wang, Nicholas J. Turland, Jie Chen, Nicholas J. Turland, Xi-wen Li, Jie Li, Peter S. Ashton, Liguo Fu, Nan Li, Robert R. Mill, Hua Peng, Richard A. Howard, Dezhi Fu, John H. Wiersema, Haining Qin, Chamlong Phengklai, Ruizheng Fang, Dieter H. Wilkins, Huaxing Qiu, Peter H. Weston, Guofang Wu, Kai Larsen, Xi-wen Li, Jie Li, Peter Stevens, Xi-wen Li, Norman K. B. Robson, Huaxing Qiu, Michael G. Gilbert, Huaxing Qiu, Michael G. Gilbert, Bingtao Li, Michael G. Gilbert, Bingtao Li, Michael G. Gilbert, Huaxing Qiu, Michael G. Gilbert, Huaxing Qiu, Michael G. Gilbert, Bingtao Li, Michael G. Gilbert, Ren Sa, Michael G. Gilbert, Bojian Bao, Kai Larsen, Gao Xinfen, Brian D. Schrire, Puhua Huang, Hiroyoshi Ohashi, Dezhao Chen, Prof. Dianxiang Zhang, Ding Hou, Hang Sun, Les Pedley, Delin Wu, Mats Thulin, Hang Sun, Mats Thulin, Dezhao Chen, Prof. Dianxiang Zhang, Kai Larsen, Dezhao Chen, Prof. Dianxiang Zhang, Kai Larsen, Supee Saksuwan Larsen, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Zhi Wei, Les Pedley, Hang Sun, Mats Thulin, Ren Sa, Michael G. Gilbert, Puhua Huang, Hiroyoshi Ohashi, Yu Iokawa, Puhua Huang, Hiroyoshi Ohashi, Langran Xu, Byoung-Hee Choi, Zhi Wei, Les Pedley, Dezhao Chen, Les Pedley, Delin Wu, Mats Thulin, Dezhao Chen, Prof. Dianxiang Zhang, Mats Thulin, Puhua Huang, Jie Li, Xi-wen Li, Henk van der Werff, Fa-Nan Wei, Henk van der Werff, Xi-wen Li, Jie Li, Henk van der Werff, Fa-Nan Wei, Henk van der Werff, Haining Qin, Shirley A. Graham, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Phillip J. Cribb, Xinqi Chen, Phillip J. Cribb, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Xinqi Chen, Phillip J. Cribb, Stephan W. Gale, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Jaap J. Vermeulen, Xinqi Chen, Jeffrey J. Wood, Xinqi Chen, Stephan W. Gale, Phillip J. Cribb, Hua Peng, Caroline M. Pannell, Hua Peng, David J. Mabberley, Hua Peng, David J. Mabberley, Xinqi Chen, Jeffrey J. Wood, Zhen-lan Wu, Sylvia M. Phillips, Zheng-de Zhu, Yang Guangyao, Chris Stapleton, De-Zhu Li, Chris Stapleton, Shou-liang Chen, Paul M. Peterson, Zhen-lan Wu, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips, Shou-liang Chen, Sylvia M. Phillips

Ischnochloa J. D. Hooker.

Perennial or annual. Culms slender, creeping or rambling, usually much branched and rooting at lower nodes. Leaf blades broadly linear to lanceolate or elliptic, base narrow, apex acuminate to setaceous; ligule membranous, truncate, back pubescent. Inflorescence terminal, composed of 1 to many subdigitate racemes on a short axis; racemes elongate, sparsely hairy, usually fragile, sessile and pedicelled spikelets of a pair similar, rarely both spikelets unequally pedicelled; rachis internodes filiform to clavate or inflated; pedicels resembling internodes but shorter. Sessile spikelet lanceolate, dorsally compressed; callus shortly bearded; glumes herbaceous to cartilaginous; lower glume deeply grooved on back or with a broad median channel, margins inflexed, 2-keeled at least toward apex; upper glume boat-shaped, acute to shortly awned; lower floret almost always sterile, reduced to a single scale or absent; upper floret bisexual, lemma linear to cordate, deeply 2-lobed, shortly 2-toothed, or rarely entire, usually awned; awn flexuous or geniculate. Stamens 2–3. Pedicelled spikelet resembling the sessile but slightly narrower and less concave, occasionally slightly smaller and staminate.

About 20 species: India to Japan and SE Asia, a few species in Africa; 13 species (three endemic) in China.

The name Microstegium glaberrimum (Honda) Koidzumi (Bot. Mag. (Tokyo) 43: 394. 1929; Pollinia glaberrima Honda, Bot. Mag. (Tokyo) 39: 42. 1925), described from Taiwan, has been misapplied in recent literature to forms of M. ciliatum. The protologue describes a grass with only 2 or 3 short racemes of small (ca. 2 mm), awnless spikelets. The type has not been seen, and it has not proved possible to establish the identity of this taxon.


1 Rachis internodes filiform, glabrous or villous, equaling or longer than spikelets   (2)
+ Rachis internodes linear to clavate, inflated upward, hairy on angles, usually shorter than spikelets   (6)
       
2 (1) Rhizomatous perennial; raceme solitary; rachis internodes and pedicels long-ciliate.   1 M. batangense
+ Annuals; racemes 2–7; rachis internodes and pedicels glabrous or almost so   (3)
       
3 (2) Stamens 3; lower lemma reduced or absent.   2 M. fauriei
+ Stamens 2; lower lemma well developed, slightly shorter than glumes   (4)
       
4 (3) Spikelets of a pair one sessile, the other pedicelled; raceme rachis fragile.   3 M. nudum
+ Spikelets of a pair both pedicelled, one pedicel long, the other short; raceme rachis tough   (5)
       
5 (4) Spikelets 1-awned (from upper lemma); lower glume smooth, apex subentire; nodes of culm glabrous.   4 M. japonicum
+ Spikelets 3-awned (from upper glume and both lemmas); lower glume scabrid, apex 2-cleft; nodes of culm pubescent.   5 M. somae
       
6 (1) Upper lemma well developed, 3–4 mm, split to about middle into 2 long, acute lobes   (7)
+ Upper lemma small, 1–2 mm, shortly 2-lobed or entire   (8)
       
7 (6) Culms rambling, up to 2 m; leaf blades 15–20 cm, pseudopetiolate, at least the lower; racemes 6–20; pedicelled spikelet awned.   6 M. petiolare
+ Culms erect, up to 40 cm; leaf blades 3–8 cm, not pseudopetiolate; racemes 2–3; pedicelled spikelet awnless or almost so.   7 M. lanceolatum
       
8 (6) Anthers 0.3–0.5 mm; awn often very short, included within spikelet; sessile spikelet 4–5 mm   (9)
+ Anthers 0.8–2.5 mm; awn clearly exserted from spikelet; sessile spikelet 2–4(–5) mm   (10)
       
9 (8) Lower glume with transverse veinlets below apex; leaf blades 5–8 mm wide.   8 M. vimineum
+ Lower glume with transverse veinlets below apex and down flanks; leaf blades 8–12 mm wide.   9 M. reticulatum
       
10 (8) Spikelets 2–2.5 mm; lower glume flat on back or almost so, veins obscure.   10 M. delicatulum
+ Spikelets 2.8–5 mm; lower glume grooved on back, veins obvious   (11)
       
11 (10) Anthers 0.8–1.5 mm; upper glume with 0.3–3 mm awnlet; awn flexuous, column obscure.   11 M. ciliatum
+ Anthers 1.5–3.5 mm; upper glume acute or minutely mucronate; geniculate, column distinct   (12)
       
12 (11) Sessile spikelet 2.8–4 mm; anthers 1.5–2.5 mm; upper lemma emarginate, glabrous.   12 M. fasciculatum
+ Sessile spikelet 4.5–5 mm; anthers 3–3.5 mm; upper lemma bifid, ciliate.   13 M. multiciliatum

Authors: Shou-liang Chen & Sylvia M. Phillips