1.【生】圆柱状的,圆筒形的
1.describes a plant part that is smooth, cylindrical, and tapering, e.g. a grass stem
1.Leaves opposite, entire, those of a pair unequal, terete to flat, petiole broadening at base forming a sheath around stem.
叶对生，全缘，一对的不等长，圆柱状的到平，叶柄扩大在基部的在茎周围形成一鞘。
2.Styles united into a column; fruit terete, ribbed when dry; endosperm ruminate or rugose.
花柱合并成一柱状果圆柱状，干燥时用助材加固；胚乳嚼烂状或具皱纹。
3.roots slender, terete , up to 40 cm long, fleshy, stem buried in sand with apical part emerged above ground.
根细长，圆柱形，长达40厘米，肉质；茎大部埋藏于沙中，部分露出地面。
4.Culms rambling or climbing, up to 15 m long, branched, glabrous to puberulous or hispid, terete, solid.
漫步的秆或攀援，可达15米长，分枝，无毛到被微柔毛的或具糙硬毛，圆柱状，固体。
5.Stem usually single, branched from above base, erect, lower part pale purple, otherwise pale green, terete, slender, glabrous.
通常茎单一，从基部以上分枝，直立，下半部分浅紫色，否则浅绿色，圆柱状，纤细，无毛。
6.Stem erect or slightly stoloniferous, terete or angulate, simple or branched, gradually glabrous downward.
有匍匐茎的茎直立或稍，圆柱状或，单一或分枝，逐渐无毛向下。
7.young branches terete, densely yellowish brown appressed pubescent, mature branches dark brown, glabrous, lenticellate.
幼枝圆柱状，密被黄棕色贴伏短柔毛，成熟的枝暗褐色，无毛，具皮孔。
8.Style not basally widened, terete, with a clear line of demarcation between ovary and style.
基部不花柱加宽，圆柱状，具清楚分界线在之间子房和花柱。
9.Shrubs scandent. Stems terete; axial parts silvery sericeous when young, later yellowish or glabrescent.
攀缘灌木茎圆柱状幼时轴深裂银色光泽被绢毛，过后淡黄或后脱落。
10.Stem erect, terete, robust, conspicuously grooved, simple or branched in upper part, sparsely glandular at nodes.
茎直立，圆柱状，粗壮，显著具凹槽，单一或分枝在上半部分，疏生具腺的在节上。