The genus Ipomoea (Convolvulaceae) in the Mata da Pimenteira State Park, semiarid region of Brazil

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Abstract

Abstract The Mata da Pimenteira State Park (MPSP) is an important remnant of caatinga vegetation in the semiarid region of Pernambuco state, Brazil. The park holds great biodiversity, but relatively few taxonomic studies have been undertaken in the area. We present a taxonomic study of Ipomoea in the MPSP based on field observations and collections deposited in the Herbarium of the Semiarid of Brazil - UAST / UFRPE (HESBRA). The species were identified based on the specialized literature, comparisons with type images available online, and protologues. Fourteen species of Ipomoea were identified - more than three times the previously known number. Two Ipomoea species recorded in the MPSP are endemic to Brazil (I. bahiensis and I. brasiliana), three others are exclusive to the Caatinga domain (I. marcellia, I. rosea, and I. tenera), and the remaining are widely distributed in South America. The habit, type and shape of leaf blade and sepals, corolla size and shapes, and presence or absence of subapical rostrum on the external sepals were the most relevant distinctive characteristics. An identification key, descriptions, comments on distribution and diagnostic characteristics, and phenological data of the species are presented.

Translated abstract

Resumo O Parque Estadual Mata da Pimenteira (PEMP) é um importante remanescente de caatinga na região semiárida de Pernambuco, Brasil. O parque possui grande biodiversidade, mas relativamente poucos estudos taxonômicos foram realizados na área. Apresentamos um estudo taxonômico de Ipomoea no PEMP com base em observações de campo e coleções depositadas no Herbário do Semiárido do Brasil - UAST/UFRPE (HESBRA). As espécies foram identificadas com base em literatura especializada, comparação com imagens de tipos disponíveis online e protólogos. Foram identificadas quatorze espécies de Ipomoea - mais do que o triplo do número conhecido anteriormente. Duas espécies de Ipomoea registradas no PEMP são endêmicas do Brasil (I. bahiensis e I. brasiliana), outras três são exclusivas do domínio Caatinga (I. marcellia, I. rosea e I. tenera), e as demais são amplamente distribuídas na América do Sul. O hábito, tipo e forma da lâmina foliar e sépalas, tamanho e formato da corola, e presença ou ausência de rostro subapical nas sépalas externas foram às características distintivas mais relevantes. São apresentados uma chave de identificação, descrições, comentários sobre distribuição e características diagnósticas e dados fenológicos das espécies.

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Brazilian Flora 2020: Innovation and collaboration to meet Target 1 of the Global Strategy for Plant Conservation (GSPC)

Thiago Vieira Costa (2018)

Abstract The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is well understood, so that it can be effectively conserved and used in a sustainable manner. Brazil hosts more than 46,000 species of plants, algae and fungi, representing one of the most biodiverse countries on Earth, and playing a key role in the GSPC. To meet the GSPC goals of Target 1 and facilitate access to plant diversity, Brazil committed to preparing the List of Species of the Brazilian Flora (2008-2015) and the Brazilian Flora 2020 (2016-present). Managing all the information associated with such great biodiversity has proven to be an extremely challenging task. Here, we synthesize the history of these projects, focusing on the multidisciplinary and collaborative approach adopted to develop and manage the inclusion of all the knowledge generated though digital information systems. We further describe the methods used, challenges faced, and strategies adopted, as well as summarize advances to date and prospects for completing the Brazilian flora in 2020.