REU: Systematic Study of Chusquea subg. Rettbergia (Poaceae: Bambusoideae) in Brazil

竹子，通常被称为树木草，是一种 生态和经济上重要的群体， 热带植物 竹子的高而优美的羽毛状茎 是任何热带景观的熟悉元素，但竹子是 实际上在大小、形态和栖息地上都是非常多样的。 除了 典型的"巨型"竹子，有些品种非常像草 茎比较软，其他的是藤本植物或灌木。 许多竹子生长在热带低地森林中或附近， 许多物种可以在高山森林中找到， 在风吹的山脊上的高海拔发生的种。 一些 哈代竹子生长在温带，能经受霜冻 还有雪 虽然有大约1000种 竹子在世界上，大多数没有被深入研究 因为它们的大小和收集它们的难度。 爱荷华州立大学的林恩·克拉克博士将研究一组 大约30种原产于南美洲的藤竹， 主要在巴西。 尽管这些物种几乎没有电流 经济用途，它们常见于较低的山地森林， 巴西东部，具有重要的生态意义。 第一步 将是观察和收集这些植物， 在巴西学生和研究人员的协助下， 压制和干燥的标本，以及保存在 液体，将被带回实验室进行第二步， 包括形态学，细胞学， 和解剖学 一旦数据被收集起来， 每一物种的物种将被准备，沿着与地理 分布资料及生境、开花结果说明 行为 研究的第三步涉及更高水平的 分析，其中这些之间的进化关系 通过寻找一致的模式来探索竹种 独特的生物相似性。 该项目的结果 将为那些对清单感兴趣的人提供申请， 美国本土竹子的保护与生态 竹类植物的经济潜力，以及 草

Bamboos, often known as the tree grasses, are an ecologically and economically important group of primarily tropical plants. The tall, graceful plume-like stems of bamboo are a familiar element of any tropical scene, but bamboos are actually very diverse in size, form, and habitat. In addition to the typical "giant" bamboos, some species are very grass-like with relatively soft stems, while others are vines or shrubs. Many bamboos grow in or near the tropical lowland forest, but many species can be found in high montane forests, with some species occurring at high elevations on windswept ridges. Some hardy bamboos grow in the temperate zone and can survive frost and snow. Although there are approximately 1000 species of bamboos in the world, most have not been studied intensively because of their size and the difficulty in collecting them. Dr. Lynn Clark of Iowa State University will study a group of 30 or so species of viny bamboos native to South America, mostly in Brazil. Although these species have little current economic use, they are common in the lower montane forests of eastern Brazil and are ecologically important. The first step will be the observation and collection of these plants in the field, aided by collaborating Brazilian students and researchers. Pressed and dried specimens, and leaves and flowers preserved in liquid, will be taken back to the laboratory for the second step, involving detailed comparative studies of morphology, cytology, and anatomy. Once the data are assembled, a complete description of each species will be prepared, along with geographical distribution data and notes on habitat and flowering and fruiting behavior. The third step of the study involves a higher level of analysis, in which the evolutionary relationships among these bamboo species are explored by searching for consistent patterns of unique biological similarities. The results of this project will have application for those interested in the inventory, conservation, and ecology of native American bamboos, the economic potential of bamboos, and the diversity and evolution of grasses.