Butia buenopolensis , a new dwarf Arecaceae species, is described. Butia buenopolensis occurs in the Serra do Cabral mountain range in Buenópolis municipatility, Minas Gerais, Brazil. Despite its diminutive size, it has arched yellowish-green leaves and pinnae not as narrow as the species of the grass-like Butia . The new species is closely related to B. archeri , based on morphology, phenology (flowering time) and habitat. They differ in leaf anatomy, plant size, color and size of inflorescence. Some novelties in Butia flower morphology, such as striated cuticle of anthers, functional staminodes presenting evidence of secretory activity, raphides on the petals of pistillate flowers and the cappilinection adhesion of petal margins, were introduced here and suggested as a new approach for future taxonomical and evolutionary studies of this genus. The isolated and small groups of fibers in the mesophyll and a non-vascular fiber bundle connected to the adaxial epidermis in the leaf midrib have not been found in any other Butia so far. The one population recorded for the new species is restricted to an area near the limits of Serra do Cabral State Park, clearly vulnerable to different forms of anthropic pressure. So, it is strongly recommended an extension in area of Serra do Cabral State Park to include the B. buenopolensis range of occurrence within its borders.

中文翻译：

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一种新的地方性和极度濒危物种 Butia (Arecaceae) 对该属的形态解剖学新奇事物的评论

描述了一种新的矮化槟榔科物种 Butia buenopolensis。Butia buenopolensis 产于巴西米纳斯吉拉斯州布宜诺波利斯市的 Serra do Cabral 山脉。尽管它的体型很小，但它的黄绿色叶子和耳廓呈拱形，不像像草一样的Butia物种那么窄。根据形态、物候（开花时间）和栖息地，新物种与 B. archeri 密切相关。它们在叶子解剖结构、植物大小、颜色和花序大小方面有所不同。这里介绍了布蒂亚花形态的一些新奇，例如花药的条纹角质层、显示分泌活动证据的功能性退化雄蕊、雌花花瓣上的针刺和花瓣边缘的毛状花序粘附，并建议作为未来分类和分类的新方法。该属的进化研究。到目前为止，在任何其他布蒂亚中都没有发现叶肉中的孤立的小群纤维和与叶中脉正表皮相连的非维管纤维束。为新物种记录的一个种群仅限于 Serra do Cabral 州立公园边界附近的区域，显然容易受到不同形式的人为压力。因此，强烈建议扩展 Serra do Cabral 州立公园的区域，将 B. buenopolensis 的发生范围包括在其边界内。显然容易受到不同形式的人为压力。因此，强烈建议扩展 Serra do Cabral 州立公园的区域，将 B. buenopolensis 的发生范围包括在其边界内。显然容易受到不同形式的人为压力。因此，强烈建议扩展 Serra do Cabral 州立公园的区域，将 B. buenopolensis 的发生范围包括在其边界内。