Morphology and Distribution of Petiolar Nectaries in Ipomoea (Convolvulaceae)

Keeler, Kathleen H.; Kaul, Robert B.

doi:10.1002/j.1537-2197.1979.tb06305.x

Cited by 29 publications

(28 citation statements)

References 17 publications

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“…Absus subsect. Baseophyllum (Conceição et al 2008) as well as in Leguminosae (Lersten & Brubaker 1987;Pascal et al 2000;Marazzi et al 2006;Melo et al 2010) and other plant families (Keeler & Kaul 1979;Oliveira & Leitão-Filho 1987;So 2004;Weber & Keeler 2013).…”

Section: Discussionmentioning

confidence: 99%

A study of the morphoanatomical characters of the leaves of Chamaecrista (L.) Moench sect. Apoucouita (Leguminosae-Caesalpinioideae)

et al. 2016

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Little attention has been paid to species of Chamaecrista sect. Apoucouita (Leguminosae-Caesalpinioideae), especially regarding anatomical studies. When only vegetative material is available, the identifi cation of such species may be diffi cult. Additionally, vegetative material of some species of C. sect. Apoucouita may be even harder to identify because they can resemble species of Inga Mill. (Leguminosae-Mimosoideae). Th e present study focused on recognizing morphoanatomical characters of leaves that are taxonomically useful for the species of C. sect. Apoucouita by employing standard anatomical techniques. Th e arrangement of the vascular system in the petiole/rachis, dorsiventral mesophyll, mucilage idioblasts in the epidermis of leafl ets and hypostomatic leaves were some of the characters shared by all species studied. Length of the petiole, position and type of extrafl oral nectaries, leafl et venation, presence and type of papillae on the epidermis of the leafl et blades and sclereids in the mesophyll were some of the characters useful in the distinction of taxa. Th e vascular arrangement of the petiole/rachis is a promising character in the distinction of species of C. sect. Apoucouita and Inga. Based on morphoanatomical data, the taxonomic revision of some species and varieties ascribed to C. sect. Apoucouita is suggested.

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Section: Discussionmentioning

confidence: 99%

A study of the morphoanatomical characters of the leaves of Chamaecrista (L.) Moench sect. Apoucouita (Leguminosae-Caesalpinioideae)

et al. 2016

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“…For this reason, histochemical tests are crucial to detect the mucilaginous secretion and to confirm that structures are colleters. Keeler & Kaul (1979), in a paper on nectaries of Ipomoea, described the function of the nectary trichomes present in this genus, although they did not perform tests to confirm the presence of a secretion.…”

Section: Discussionmentioning

confidence: 99%

Secretory structures of Ipomoea asarifolia: anatomy and histochemistry

Martins¹,

Lima²,

Mascarenhas³

et al. 2012

Rev. bras. farmacogn.

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Ipomoea asarifolia (Desr.) Roem. & Schult., Convolvulaceae, is a weed that infests agricultural areas and is toxic to cattle. In spite of its toxicity, the leaves of this plant are used in traditional remedies in the state of Bahia, Brazil. The present work describes the leaf anatomy of I. asarifolia and characterizes the exudates of its secretory structures. The leaves have a unistratifi ed epidermis composed of ordinary cells with straight to slightly sinuous anticlinal walls and thin cuticles. Paracytic stomata are found on both surfaces of the leaves at the same level as the ordinary epidermal cells. Trichomes producing polysaccharide secretions occur on the petiole and leaf blade and are considered colleters. The mesophyll is dorsiventral and the vascular bundle of the central vein is bicollateral. Two opposed nectaries occur on the petiole near the leaf blade. Each nectary is composed of a small canal with internal ramifi cations and numerous secretory trichomes. The laticiferous glands are articulated, not anastomosed, and are composed of large diameter cells with thin cell walls. The secretions of the laticiferous glands are lipidic.

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“…Nectários extrafl orais variam quanto ao tipo, forma, localização e outros caracteres, tornando-se uma ferramenta efi caz para a taxonomia (Keeler & Kaul 1979;Bentley & Elias 1983). Em Leguminosae já foram examinados Nefs elevados, tricomas glandulares, embebidos e outros, com localizações e aspectos morfológicos diversos (Elias 1983;Paiva & Machado 2006;Machado et al 2008).…”

Section: Figura 2 Nectários Em Espécies De Leguminosae De Mirandiba-unclassified

Morfologia de nectários em Leguminosae senso lato em áreas de caatinga no Brasil

et al. 2010

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RESUMO -(Morfologia de nectários em Leguminosae senso lato em áreas de caatinga no Brasil). Nectários extrafl orais (Nefs) são glândulas secretoras de néctar encontradas em diversas espécies de Angiospermas, inclusive Leguminosae. Essas estruturas podem se apresentar sob diferentes formas (elevados, embebidos; com ou sem estipe; cores distintas) e posições nas plantas (na raque, no pecíolo), sendo essas características relevantes aos estudos de taxonomia e sistemática. Este trabalho analisou a diversidade morfológica dos Nefs em Leguminosae de uma área prioritária para a conservação da caatinga no Estado de Pernambuco. As 35 espécies de Legumionsae estudadas foram coletadas no Município de Mirandiba, no semi-árido Pernambucano, e submetidas às técnicas usuais para análise e descrição morfológica. Entre essas espécies, foram caracterizados Nefs com origem primária (não substitutivos) e secundária (substitutivos). Dois diferentes tipos com onze formatos distintos foram encontrados entre elas. Uma grande variedade de localização, coloração, projeção, e dimensão foram registradas aqui. Uma chave de identifi cação e ilustrações foram elaboradas também. Os dados apresentados aqui ampliam o número de espécies estudadas com Nefs para a família, e também confi rmam a importância taxonômica e ecológica dessas estruturas para os legumes da região do semi-árido do Brasil. Palavras-chave: Glândulas, morfologia, néctar, sistemática ABSTRACT -(Nectary morphology of Leguminosae senso lato in areas of dry seasonal forest in Brazil). Extrafl oral nectaries (Efns) are nectar secreting glands found in many species of Angiosperms, including Leguminosae. These structures have various forms (elevated, embedded; stalk present or not; different colors) and positions on the plants (on the rachis, on the petiole), and these characteristics are relevant to taxonomy and morphology studies. This work analyses the morphological diversity of Efns in Leguminosae from a priority conservation area of caatinga in Pernambuco state. The 35 Leguminosae species studied were collected in Mirandiba municipality, a semi-arid region of Pernambuco and submitted to the usual techniques of anatomy and morphology analyses. Among these species, Efns with primary (non-substitutive) and secondary (substitutive) origin were characterized. Two different kinds and eleven distinct Efns forms were found. A large variety of placement, color, shape, and size are reported here. An identifi cation key and illustrations are also provided. Our data increased the number of species studied with Efns in the family, and also confi rm the taxonomic and ecological importance of this structure for legumes from the semi-arid region of Brazil.

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Morphology and Distribution of Petiolar Nectaries in Ipomoea (Convolvulaceae)

Cited by 29 publications

References 17 publications

A study of the morphoanatomical characters of the leaves of Chamaecrista (L.) Moench sect. Apoucouita (Leguminosae-Caesalpinioideae)

A study of the morphoanatomical characters of the leaves of Chamaecrista (L.) Moench sect. Apoucouita (Leguminosae-Caesalpinioideae)

Secretory structures of Ipomoea asarifolia: anatomy and histochemistry

Morfologia de nectários em Leguminosae senso lato em áreas de caatinga no Brasil

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