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| Registros recuperados: 106 | |
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| Esser, Hans-Joachim. |
| The Hippomaneae (Euphorbiaceae) are revised for Malesia. Only Excoecaria and Homalanthus are excluded. A key to all Malesian genera is provided. The generic concepts applied differ markedly from previous treatments for the region with the following genera accepted: Balakata, Falconeria, Gymnanthes, Microstachys, Sapium, Shirakiopsis, Stillingia and Triadica. All of these genera show peculiarities in biogeography and ecology, which are discussed. Among these genera only Stillingia is kept as traditionally used. Balakata (based on Sapium sect. Pleurostachya) and Shirakiopsis (based on Sapium sect. Parasapium but excluding its type) are described as new genera; Falconeria, Microstachys and Triadica are re-established as distinct genera having been treated as... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Euphorbiaceae; Hippomaneae; Malesia. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/525910 |
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| Welzen, P.C. van; Sweet, F.S.T.; Fernández-Casas, F.J.. |
| Jatropha, a widespread, species rich genus, ranges from the Americas and Caribbean to Africa and India. In Malesia five species occur, all of which were introduced and originated in Central and South America. The five species are revised and an identification key, nomenclature, descriptions, distributions, ecology, vernacular names, uses and notes are provided. Special attention is given to the uses of J. curcas, because it is steadily gaining popularity as a potential biofuel plant and, because of that, is being cultivated more often. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Euphorbiaceae; Introduced species; Invasive species; Jatropha; Malesia; Revision. |
| Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/627810 |
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| Welzen, P.C. van; Winkel, E.. |
| The variability of Ostodes paniculata var. paniculata, the only representative of the genus in Malesia, is described. The variety and the species have a disjunct distribution as they are found in India to Southern China and the Southeast Asian mainland, Sumatra and Java. The variability in leaf glands, domatia, sepals, and seeds shows geoclines. Depending on one’s view the genus has two more varieties or species, both more hairy and occurring from N Thailand to China or in China only. Their nomenclature is provided, as is the nomenclature of the many excluded species, once part of a larger generic concept of Ostodes, but now mainly part of Dimorphocalyx and Paracroton. Typical for Ostodes are the red latex, the ovate, rather large serrate leaf blades with... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dimorphocalyx; Euphorbiaceae; Malesia; Ostodes; Paracroton; Trigonostemon. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/578359 |
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| Ottens-Treurniet, M.A.D.; Welzen, P.C. van. |
| The genus Blumeodendron (Euphorbiaceae) comprises nine species and is distributed from the Andaman Islands and Myanmar in the west through Malesia to the Bismarck Archipelago in the east. Two species are newly described, B. gesinus, with ridged fruits, and B. endocarpum, with a thickened endocarp around each seed. Three former synonyms, B. novoguineense (new name for Bennettia papuanum), B. philippinense and B. subrotundifolium, are reinstated as species. Two important characters were newly discovered, the presence of small lepidote hairs in all species and the indehiscent fruit of B. endocarpum |
| Tipo: Article / Letter to the editor |
Palavras-chave: Blumeodendron; Euphorbiaceae; Malesia; Revision; Taxonomy. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/607279 |
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| Welzen, P.C. van. |
| Malesia harbours one, possibly two species of Blachia. In the Philippines B. philippinensis is found and this species is not synonymous with B. andamanica. In literature B. andamanica has been recorded for west Malesia, but no specimens were seen. Based on its presence in Peninsular Thailand and the Andamans it is likely to be present in Peninsular Malaysia. The most distinct difference between both species is in the indumentum of the ovary, sparsely hairy in the lower half versus densely and completely sericeous, respectively. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Blachia; Euphorbiaceae; Malesia. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/578354 |
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| Sierra, S.E.C.; Welzen, P.C. van; Slik, J.W.F.. |
| A revision of Mallotus section Philippinenses (former section Rottlera) in Malesia and Thailand is given. Descriptions, distribution maps, habit drawings, and a key to the species are provided. The diagnostic characters for the section are briefly discussed. Five species (M. kongkandae, M. leptostachyus, M. pallidus, M. philippensis, and M. repandus) are recognised. Mallotus chromocarpus is excluded from the section because it has more shared characters with the monospecific genus Octospermum, like the presence of indehiscent fruits, absence of stipules, marginal extrafloral nectaries on the upper side of the leaf blade, broad connectives (shaped umbrella-like), and its occurrence in New Guinea, and is therefore probably closely related to it. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Euphorbiaceae; Rottlerinae; Mallotus; Philippinenses; Rottlera; Octospermum; Malesia; Taxonomy. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/525257 |
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| Santos,Valdira de Jesus; Sales,Margareth Ferreira de. |
| O estudo foi baseado na análise morfológica de espécimes de herbários nacionais e provenientes de coletas. A tribo está representada no Estado por oito gêneros: Actinostemon Sw. (3 spp.), Mabea Aubl. (1sp.), Maprounea Aubl. (1sp.), Microstachys A. Juss.(2 spp.), Sapium P.Browne (2 spp.), Sebastiania Spreng. (1sp.), Senefeldera Mart. (1sp.) e Stillingia Garden ex L. (1sp.). Os gêneros com maior distribuição no Estado são Maprounea, Sapium e Sebastiania, ocorrendo em todas as zonas fitogeográficas. Actinostemon, Mabea e Senefeldera sao restritos a floresta atlantica. São apresentadas chaves para identificação dos gêneros e espécies, descrições, comentários e ilustrações. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Euphorbiaceae; Hippomaneae; Taxonomia; Pernambuco. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000400008 |
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| Abdallah,Walid Elsayed; Elsayed,Wael Mohamady; Hassan,Rasmia Ali; Nazif,Naglaa Mohammed; Ali,Mohammed Ibrahim; Abdelshafeek,Khaled Abdelhady. |
| Investigation of the lipid constituents of the aerial parts of Phyllanthus atropurpureus resulted in isolation and identification of the fatty acid mixture which consists of eight acids with linolenic acid as major and the unsaponifiable fraction that contain a series of hydrocabons, sterols, in addition to one triterpene (α-amyrin). The acetone insoluble fraction was found to contain two fatty alcohols and three n-hydrocabons in which the n-eicosane is the most abundant (44.16%). The flavonoidal constituents were isolated from ethyl acetate and butanol fractions which were identified as: luteolin-7-O-glucoside, kaempferol 3-O-(p-coumaroylglucoside), kaempferitrin, luteolin and kaempferol. Evaluation of different extracts as acetylcholinesterase inhibitors... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phyllanthus atropurpureus; Euphorbiaceae; Flavonoids; Acetylcholineesterase inhibitors; Antioxidant. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100575 |
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| AARESTRUP, J. R.; KARAM, D.; CORRÊA, E. J. A.; FERNANDES, G. W.. |
| A avaliação da qualidade fisiológica de sementes é um aspecto importante para o controle das plantas daninhas. Objetivou-se verificar a viabilidade de sementes de Euphorbia heterophylla resistentes e suscetíveis a herbicidas, após serem armazenadas durante 14 meses, por meio da aplicação dos testes de germinação e tetrazólio. Foi analisada a germinação na ausência e presença de luz, em temperatura constante (25 °C). Para o teste de tetrazólio, as sementes foram selecionadas longitudinal-diagonalmente, colocadas em placas de Petri contendo solução de tetrazólio a 1')10, envoltas em papel-alumínio e mantidas a 30 °C, no escuro e em estufa, por 18 horas. Não foram observadas diferenças significativas entre os biótipos resistentes e suscetíveis de E.... |
| Tipo: Artigo de periódico |
Palavras-chave: Donnência; Genninação; Planta daninha; Tetrazólio.; Euphorbiaceae; Resistência.. |
| Ano: 2008 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/473777 |
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| Aarestrup,J.R.; Karam,D.; Corrêa,E.J.A.; Fernandes,G.W.. |
| A avaliação da qualidade fisiológica de sementes é um aspecto importante para o controle das plantas daninhas. Objetivou-se verificar a viabilidade de sementes de Euphorbia heterophylla resistentes e suscetíveis a herbicidas, após serem armazenadas durante 14 meses, por meio da aplicação dos testes de germinação e tetrazólio. Foi analisada a germinação na ausência e presença de luz, em temperatura constante (25 ºC). Para o teste de tetrazólio, as sementes foram seccionadas longitudinal-diagonalmente, colocadas em placas de Petri contendo solução de tetrazólio a 1%, envoltas em papel-alumínio e mantidas a 30 ºC, no escuro e em estufa, por 18 horas. Não foram observadas diferenças significativas entre os biótipos resistentes e suscetíveis de E. heterophylla... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dormência; Euphorbiaceae; Germinação; Planta daninha; Resistência; Tetrazólio. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000300006 |
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| WAHEED,K.; MUHAMMAD,S.K.; SHOMAILA,A.; MUHAMMAD,Z.; IZHAR,U.; ULLAH,S.. |
| ABSTRACT: Medicinal Plants have been used throughout the world by human beings as a drug and remedies for various diseases since time immemorial. A study was planned to count into the antimicrobial activity and phytochemical screening of Euphorbia helioscopia. The plants were gathered and tested against some standard strains and some human pathogenic microorganisms i.e Escherichia coli, Bacillus Subtilis, Staphylococcus aureus, Klebsiella pneumoniae, Salmonella typhi, Pseudomonas aeruginosa and three fungal strain Trichoderma, R hizopus nigricans, Aspergillus niger. The concentrations of extracting samples (500 and 1,000 mg mL-1) were used against pathogens. Ciprofloxacin was used as positive control in case of bacterial strains and Colfrimazol was used... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ayurvedic; Euphorbiaceae; Labeena; Secondary metabolites; Indigenous. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100211 |
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| Guimarães,Luiz Alberto Cavalcante; Secco,Ricardo de S.. |
| Como parte de uma revisão taxonômica das espécies de Croton L. na Amazônia brasileira, estudou-se as seguintes espécies de Croton sect. Cyclostigma Griseb. e Croton sect. Luntia (Raf.) G. L. Webster subsect. Matourenses G. L. Webster: Croton urucurana Baill., C. draconoides Müll. Arg., C. trombetensis R. Secco, P. E. Berry & N.A. Rosa, C. sampatik Müll. Arg., C. palanostigma Kl., C. pullei Lanj. e C. matourensis Aubl. O estudo foi baseado em trabalho de campo realizado nos Estados do Pará e Maranhão, e em material depositado nos herbários IAN, INPA, MG e RB, incluindo tipos. Algumas dessas espécies, como C. urucurana, C. draconoides, C. palanostigma e C. sampatik , são frequentemente encontradas nos herbários com identificações equivocadas. São... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Euphorbiaceae; Croton na Amazônia brasileira; Taxonomia vegetal. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672010000300006 |
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| Registros recuperados: 106 | |
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