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Peperomia ciliato-caespitosa M. Carvalho-Silva & E.F. Guim. 1. Hábito. 2. Detalhe do ramo com cicatrizes foliares. 3. Base foliar, vista da face abaxial. 4. Ápice foliar, vista da face abaxial. 5. Base foliar peltada, vista da face adaxial. 6. Ápice foliar, vista da face adaxial. 7. Tricoma multicelular. 8. Espiga. 9. Pedúnculo com cicatriz de bráctea peduncular. 10. Ovário. 11. Estame. 12. Bráctea floral. 13. Gema. 14. Bráctea peduncular. 15. Fruto maduro. 16. Visão apical do fruto desprovido do ápice. 17. Semente (Demurer et al. 1342).
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Os estudos taxonômicos que se vem realizando com as Piperaceae para o Brasil permitiram acrescentar uma nova espécie para a família com base em material analisado do Estado do Espírito Santo. Peperomia ciliato-caespitosa é uma planta que ocorre em campos rupestres, apresentando hábito cespitoso e frutos peculiares, que a enquadram no subgênero Rhyn...
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Mathieu, G. (2020). Peperomia leptostachya (Piperaceae) revived. Candollea 75: 45–49. In English, English abstract.For about forty-five years a far too heterogenous concept of Peperomia blanda (Jacq.) Kunth has been adopted. A strong plea is made to apply the name Peperomia leptostachya Hook. & Arn. for a species with a wide distribution in the pal...
We present the first record of Gomesa leinigii (Pabst) M.W. Chase & N.H. Williams in São Paulo state, Brazil, previously known only in the state of Paraná, extended its geographical distribution. We also document newly discovered populations of Macradenia paraensis Barb.Rodr. and Peperomia psilostachya C.DC. in São Paulo state, Brazil. Description,...
RESUMO O Parque Nacional do Itatiaia tem sido objeto de estudo mesmo antes de ser designado como parque em junho de 1937. Localizado em terras fluminenses e mineiras, protege atualmente cerca de 30.000 hectares de patrimônio biótico e geomorfológico da Serra da Mantiqueira. A pesquisa teve como objetivo conhecer e descrever os táxons de Peperomia o...
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Citations
Based on a recent collection, we present the rediscovery of Peperomia crypticola C. DC., a rare species only known from eastern Minas Gerais, Southeastern Brazil. This species was now found in western Rio de Janeiro, more than 200 km apart and more than hundred years after the original description. An emended description, distribution map, color photographs of the fresh collection and comparison of the species with the closely related Peperomia lanceolatopeltata C. DC. are presented.
Epiphytes are an important component of the diversity of tropical forests, and they also have several ecological functions. Vegetation heterogeneity is one of the features responsible for the high biodiversity of the Atlantic Forest, especially in the domain’s seasonal semideciduous forest (SSF). This biodiversity presents as high endemism and species richness. Owing to the seasonal nature of SSF, organisms that require high humidity (e.g. epiphytes) would be expected to show low species richness in these forests. The aims of this study were to conduct a survey of the vascular epiphytes in remnants of montane SSF in the Serra do Ibitipoca, Brazil, and to evaluate the importance of habitat heterogeneity for the richness and composition of species in these areas. We also evaluated whether the intrinsic characteristics of the SSF phytophysiognomy and fragmentation could result in low species richness and a high number of accidental epiphyte species. The study was conducted in the course of 18 expeditions undertaken between September 2013 and December 2016, covering five fragments of montane SSF (totalling 23.6 ha). We recorded 96 species (only one of which is an accidental epiphyte), distributed across 41 genera and 10 families. This is the highest epiphytic species richness recorded in Brazilian SSF to date. The results refuted the initial hypothesis and reinforce the importance to the epiphytic community of conservation of fragments with different structures.
With the aim of documenting aquatic macrophyte succession on floating meadows and its relationship with histosol thickness, we sampled six-hundred 0.5 × 0.5 m² plots of ten randomly chosen floating meadows in Baía Grande lake (Aquidauana, MS, Brazil). The floating meadows were marked in order to follow, since August 2014–August 2015, floristic and phytosociological changes and to assess their relationship with histosol thickness. We recorded 58 species belonging to 23 families and 47 genera. The richest families were Poaceae (8 species), Asteraceae (7) and Cyperaceae (6). Four species stood out for their high importance value: Oxycaryum cubense (Poepp. & Kunth) Lye, Ludwigia helminthorrhiza (Mart.) H. Hara, Eichhornia azurea (Sw.) Kunth and Vigna longifolia (Benth.) Verdc. Histosol thickness of the floating meadows varied from 1 to 51 cm, making it possible to classify them into three classes. We observed that most species (63.3%) were in the initial and intermediate stages of succession (1–34 cm histosol) and that species were replaced as a function of histosol thickness. We conclude that floating meadows have succession stages with various species of aquatic macrophytes related with histosol thickness, but species composition regarding succession stages differs from other water bodies in the Pantanal wetland.
The essential oils (EOs) obtained from Peperomia tetraphylla (PT), P. pereskiifolia (PP), and P. glabella (PG), were evaluated in MAO-A and -B in vitro inhibitory assays. The oils demonstrated IC50 values for MAO-A of 17.4, 71.0, and 21.9 μg/mL for PG, PT and PP, respectively. For MAO-B, just slight inhibitions were observed at 100 μg/mL. By GC-MS analysis, α-copaene (32.6 % PG), (Z)- and (E)-caryophyllene (11.7 % and 10.7 % PP, respectively), viridiflorene (15.1 % PP), benzyl benzoate (43.9 % PT) and benzyl salicylate (16.7 % PT) were identified as mains components. A phenylpropanoid, named methyl chavicol (7.8 %) was also detected for PG, which was reported for the first time for Peperomia species. To the best of our knowledge, this is the first time that the essential oil chemical constitutions and pharmacological potential of these plants are reported.
This study was performed in a remnant of Seasonal Semideciduous Forest at Fazenda Fortaleza de Sant’Anna, in the municipality of Chácara, Minas Gerais, Brazil (22.0129S, 43.8628W), in an area of ca. 1 ha, via monthly expeditions throughout the year 2012. We found 91 species of vascular epiphytes, distributed in 44 genera and 12 families. The richest families were Orchidaceae (35 spp.), Bromeliaceae (18 spp.), Polypodiaceae (10 spp.), Piperaceae (nine spp.) and Araceae (seven spp.). Two species were recorded for the first time in Minas Gerais: Rodriguezia sticta and Stelis oligantha (Orchidaceae). Rhipsalis oblonga (Cactaceae) was recollected in the state after about 100 years without records. Four species are cited in the list of endangered plants in Minas Gerais: Nematanthus crassifolius (Gesneriaceae) and Cattleya bicolor (Orchidaceae) are in the category “Vulnerable” (VU), Nidularium azureum (Bromeliaceae) and Pleurothallis pectinata (Orchidaceae) are “Critically Endangered” (CR). Nidularium azureum is also cited as CR in the Red Book of Brazilian Flora. Most species were classified as characteristic holoepiphytes and anemochory was the most frequent dispersion syndrome.
We present here the first record of Peperomia armondii, P. hispidula and P. mandioccana for the state of Espírito Santo, Brazil. Taxonomic comments, a distribution map and images of these species are presented.
Serra Negra is an important remnant of Atlantic Forest located in the southern part of the Zona da Mata of Minas Gerais, in Mantiqueira Range, composed by a mosaic of "campos rupestres" (on quartzite outcrops), cloud scrubs, lower-montane to upper montane seasonal semi-deciduous forests or evergreen cloud forests, and riparian to interfluvial forests. Despite floristic importance of this area, there are only two Natural Patrimony Private Reserves: São Lourenço do Funil and Serra Negra. The study area is a ravine forest fragment (evergreen forest), comprising ca. 0.9 ha, localized in the Cânion do Ribeirão do Funil, in Funil Village, municipality of Rio Preto, southern of Serra Negra. The present study was carried out from 2004 to 2009 and its goals were: (1) to survey the non-arboreal vascular flora of the area, (2) discuss plant habits and habitats, and (3) describe the physiognomy of this forest fragment. A total of 157 taxa of vascular plants (41 ferns and 116 angiosperms) were recorded, belonging to 48 families (10 of ferns and 38 of angiosperms). The richest families of ferns and angiosperms were Pteridaceae (11 spp.) and Orchidaceae (27 spp.), respectively. The most representative habit was herbaceous (124 spp.), within which epiphyte species (42 spp.) must be emphasized, representing about 25% of all recorded species. Twelve species are cited in the endangered species list of Minas Gerais State (two ferns and 10 angiosperms). The high number of species found in this small area remarks the importance of this fragment for the knowledge of biodiversity of Serra Negra, in particular, and Minas Gerais, in general. In addition, the results reinforce the need of an action plan addressed to the conservation of the region.
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Serra Negra is an important remnant of Atlantic Forest located in the southern part of the Zona da Mata of Minas Gerais, in Mantiqueira Range, composed by a mosaic of "campos rupestres" (on quartzite outcrops), cloud scrubs, lower-montane to upper montane seasonal semi-deciduous forests or evergreen cloud forests, and riparian to interfluvial forests. Despite floristic importance of this area, there are only two Natural Patrimony Private Reserves: São Lourenço do Funil and Serra Negra. The study area is a ravine forest fragment (evergreen forest), comprising ca. 0.9 ha, localized in the Cânion do Ribeirão do Funil, in Funil Village, municipality of Rio Preto, southern of Serra Negra. The present study was carried out from 2004 to 2009 and its goals were: (1) to survey the non-arboreal vascular flora of the area, (2) discuss plant habits and habitats, and (3) describe the physiognomy of this forest fragment. A total of 157 taxa of vascular plants (41 ferns and 116 angiosperms) were recorded, belonging to 48 families (10 of ferns and 38 of angiosperms). The richest families of ferns and angiosperms were Pteridaceae (11 spp.) and Orchidaceae (27 spp.), respectively. The most representative habit was herbaceous (124 spp.), within which epiphyte species (42 spp.) must be emphasized, representing about 25% of all recorded species. Twelve species are cited in the endangered species list of Minas Gerais State (two ferns and 10 angiosperms). The high number of species found in this small area remarks the importance of this fragment for the knowledge of biodiversity of Serra Negra, in particular, and Minas Gerais, in general. In addition, the results reinforce the need of an action plan addressed to the conservation of the region.
