Cactaceae in Parque Nacional do Itatiaia, Serra da Mantiqueira, Brazil

Abstract A floristic study of Cactaceae in Parque Nacional do Itatiaia, Serra da Mantiqueira, Brazil is provided. The family is represented in the area by five genera and 14 species, listed as follows: Hatiora salicornioides, Lepismium houlletianum, Pereskia aculeata, Rhipsalis agudoensis, R. campos-portoana, R. elliptica, R. floccosa subsp. pulvinigera, R. juengeri, R. neves-armondii, R. pilocarpa, R. pulchra, Schlumbergera lutea subsp. lutea, S. microsphaerica and S. opuntioides. Five species are included in different cathegories of threaten. The data suggests that the conservation and maintenance of this environmental protected area is relevant to provide subsidies to the knowledge of Cactaceae for the flora of Brazil. Identification key, morphological descriptions, illustrations, and comments on taxonomy and ecology are provided for each species.

摘要 本研究针对巴西曼蒂凯拉山脉伊塔蒂亚亚国家公园内的仙人掌科（Cactaceae）植物区系开展了系统的区系学研究。该区域内仙人掌科共计5属14种，具体物种名录如下：Hatiora salicornioides、Lepismium houlletianum、Pereskia aculeata、Rhipsalis agudoensis、R. campos-portoana、R. elliptica、R. floccosa subsp. pulvinigera、R. juengeri、R. neves-armondii、R. pilocarpa、R. pulchra、Schlumbergera lutea subsp. lutea、S. microsphaerica及S. opuntioides。其中5个物种被列入不同等级的受威胁保护类别。本研究数据表明，保护与维护该国家级自然保护区，可为巴西植物区系中仙人掌科的相关研究提供重要支撑依据。本研究为每个物种提供了分类检索表、形态描述、插图，以及分类学与生态学相关评述。