更低的颖片不被一节间分开;成对的小穗和对于分枝的末端的簇生。
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secondary branches well developed, spreading; lower glume separated by an internode.
次生分枝发育良好,平展;一节间分开的更低的颖片。
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the length of the lower glume is very variable, even within a single raceme.
更低的颖片的长度非常易变,即使在一单个的总状花序内。
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倒卵形的无梗小穗,具宽翅的下部颖片;从小穗存在,膝曲,外露的芒。
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无梗小穗的更低的颖片倒披针形,具翅;芒缺席或者不完全,在小穗内包括。
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lower glume longer than upper glume; panicle open, branches divaricate, bearded in axils.
更低的颖片长于上面颖片;圆锥花序开阔的,分枝,具髯毛在腋处。
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lower glume of sessile spikelet shallowly concave to almost flat, without a swelling at base.
凹的更下部的颖片的浅无梗小穗对几乎平,没有肿起部分在基部。
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圆锥花序穗状的具短总状花序贴伏于轴;小穗直具芒;清楚的更低的颖片2翻转。
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9 (8) lower glume of sessile spikelet deeply concave, depression with a prominent swelling at base.
深深凹的无梗小穗的下部颖片,沮丧具一突出的肿起部分在基部。
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每节小穗3;更低的颖片长具长柔毛,毛在颖片先端以外延长;上面外稃心形。
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4 (3) lower glume of sessile spikelet laterally compressed; raceme often reduced to a triad.
无梗小穗侧面压扁的更低的颖片;总状花序通常退化至一个三人小团伙。
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lower glume separated by an internode; spikelets not in pairs, evenly spread throughout the panicle.
一节间分开的更低的颖片;不成对的小穗,在整个圆锥花序平均平展。
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lower glume separated by an internode; upper lemma glabrous at the apex.
一节间分开的更低的颖片;在先端无毛的上面外稃。
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