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Notes on leaf micromorphology of the rare herbaceous bamboo Buergersiochloa bambusoides Pilg. (Olyreae, Poaceae) from New Guinea and its taxonomic implications
PhytoKeys ( IF 1.4 ) Pub Date : 2021-02-19 , DOI: 10.3897/phytokeys.172.59506
Jamile F. Lima , Kelly Regina B. Leite , Lynn G. Clark , Reyjane P. Oliveira

We present notes on the leaf micromorphology of Buergersiochloa bambusoides, a rare species from New Guinea and included in Buergersiochloinae, one of three subtribes of the herbaceous bamboos (tribe Olyreae). We used scanning electron microscopy and light microscopy to analyze the microcharacters of both adaxial and abaxial leaf surfaces. Within the Olyreae, saddle-shaped silica bodies in both the costal and intercostal zones are considered unique to Buergersiochloinae. Simple, circular and very small papillae are observed on the adaxial surface, and for the first time, branched papillae on the abaxial surface are observed in B. bambusoides. On the abaxial surface, there are papillae on long cells associated with the stomatal complexes. Bicellular microhairs are the only trichomes present and they are found almost exclusively on the abaxial surface. The saddle-shaped silica bodies are the most taxonomically important among the microcharacters observed on the leaf surface of B. bambusoides.

中文翻译:

关于稀有草本竹子Buergersiochloa bambusoides Pilg的叶片微观形态的注释。新几内亚的(Olyreae,禾本科)及其分类学意义

我们提出了关于Buergersiochloa bambusoides(一种来自新几内亚的稀有物种)的叶片微观形态的注释,该物种包括在Buergersiochloinae(草本竹子的三个亚部落)(部落Olyreae)中。我们使用扫描电子显微镜和光学显微镜来分析叶片正面和背面的微观特征。在Olyreae中,在沿海和肋间区域中的鞍形二氧化硅体被认为是Buergersiochloinae所独有的。在近轴表面观察到简单,圆形和非常小的乳头,而在球茎双歧杆菌中首次观察到在其背面的分支乳头。在背面,与气孔复合体相关的长细胞上有乳头。双细胞微毛是唯一存在的毛状体,并且几乎仅在其背面发现。鞍形二氧化硅体在B. bambusoides叶片表面上观察到的微字符中,在分类学上最重要。
更新日期:2021-02-19
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