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El género Deguelia (Leguminosae, Papilionoideae, Millettieae) en Mesoamérica, una especie nueva y una combinación nueva
Sousa S., Mario;
Revista mexicana de biodiversidad , 2009,
Abstract: a revision of the genus deguelia aubl. (millettieae: leguminosae) in mesoamerica is presented. a new species, deguelia alata is described and illustrated, and a new combination, d. densiflora is proposed for a species formerly included in lonchocarpus.
Standleyi una nueva sección del género Lonchocarpus (Leguminosae, Papilionoideae, Millettieae), nuevas especies y subespecies para Mesoamérica y Sudamérica
Sousa S., Mario;
Acta botánica mexicana , 2009,
Abstract: a new section, sect. standleyi, is described for the genus lonchocarpus (leguminosae, papilionoideae, millettieae), based mainly on previously proposed concepts, but not validly published. also six new taxa for science: five species, lonchocarpus martinezii, l. savannicola, l. semideserti, l. stenophyllus, l. tuxtepecensis and a new subspecies l. lanceolatus subsp. calciphilus are described and illustrated. lonchocarpus pubescens is proposed as an older binomial than l. dipteroneurus and four other names associated previously. to contrast the differences, two keys for the taxa are given, one for the species in mesoamerica and south america and another for the new section and the sect. lonchocarpus.
Mario Sousa S.
Acta botánica mexicana , 2011,
Abstract: Se describen e ilustran nuevos taxones para el género Lonchocarpus (Leguminosae, Papilionoideae, Millettieae) para México y Mesoamérica. De las 19 especies reconocidas en esta sección, ocho son nuevas para la ciencia: L. brenesii, L. isthmensis, L. latimarginatus, L. michoacanicus, L. pedunculatus, L. plicatus, L. subsessilifolius y L. wendtii, y una nueva subespecie de L. brenesii subsp. vulcanicola. Al aumentarse significativamente el número de sus componentes reconocidos se caracteriza de nuevo a la sección Lonchocarpus y se contrastan las diferencias de sus representantes con una clave dicotómica.
La sect. Lonchocarpus del género Lonchocarpus (Leguminosae, Papilionoideae, Millettieae): nuevas especies y subespecie para México y Mesoamérica
Sousa S, Mario;
Acta botánica mexicana , 2011,
Abstract: new taxa of the lonchocarpus genus from mexico and mesoamerica (leguminosae, papilionoideae, millettieae) are described and illustrated. of the 19 recognized species, eight species: l. brenesii, l. isthmensis, l. latimarginatus, l. michoacanicus, l. pedunculatus, l. plicatus, l. subsessilifolius and l. wendtii, and a new subspecies of l. brenesii, subsp. vulcanicola, are new to science. the lonchocarpus section is once again characterized with this significant increase in the number of its known species. mesoamerican species and subspecies of the lonchocarpus section show contrasting differences in the dichotomous key.
Oil glands in the Neotropical genus Dahlstedtia Malme (Leguminosae, Papilionoideae, Millettieae)
Teixeira, Simone de Pádua;Rocha, Joecildo Francisco;
Brazilian Journal of Botany , 2009, DOI: 10.1590/S0100-84042009000100006
Abstract: dahlstedtia pentaphylla (taub.) burkart and d. pinnata (benth.) malme belong to the millettieae tribe and are tropical leguminous trees that produce a strong and unpleasant odour. in the present work, we investigated the distribution, development and histochemistry of foliar and floral secretory cavities that could potentially be related to this odour. the ultrastructure of foliar secretory cavities were also studied and compared with histochemical data. these data were compared with observations recorded for other species of millettieae in order to gain a phylogenetic and taxonomic perspective. foliar secretory cavities were only recorded for d. pentaphylla. floral secretory cavities were present in the calyx, wings and keels in both species; in d. pinnata they also were found in bracteoles and vexillum. such structures were found to originate through a schizogenous process. epithelial cells revealed a large amount of flattened smooth endoplasmic reticula, well-developed dictyosomes and vacuoles containing myelin-like structures. cavity lumen secretion stains strongly for lipids. features of the secretory cavities studied through ultrastructural and histochemical procedures identify these structures as oil glands. thus, if the odour produced by such plants has any connection with the accumulation of rotenone, as other species belonging to the "timbó" complex, the lipophilic contents of the secretory cavities of dahlstedtia species take no part in such odour production. the presence, distribution patterns and frequencies of secretory structures in dahlstedtia are taxonomically significant and may be utilized as a diagnostic character which justifies the separation of this genus into two species.
Taxonomic value of foliar characters in Dahlstedtia Malme: Leguminosae, Papilionoideae, Millettieae
Teixeira, Simone de Pádua;Gabrielli, Antonio Carlos;
Acta Botanica Brasilica , 2006, DOI: 10.1590/S0102-33062006000200014
Abstract: dahlstedtia malme (leguminosae) is a neotropical genus, native to the brazilian atlantic forest, and comprises two species, d. pinnata (benth.) malme and d. pentaphylla (taub.) burk., although it has been considered a monotypic genus by some authors. leaf anatomy was compared to verify the presence of anatomical characters to help delimit species. foliar primordium, leaflet, petiolule, petiole and pulvinus were collected from cultivated plants (campinas, sp, brazil) and from natural populations (picinguaba, ubatuba and caraguatatuba, sp, brazil - d. pinnata; antonina, pr, brazil - d. pentaphylla). studies on leaflet surface assessment (scanning electron microscopy), as well as histology and venation analyses were carried out of dehydrated, fresh and fixed material from two species. leaflet material was macerated for stomatal counts. histological sections, obtained by free-hand cut or microtome, were stained with toluidine blue, safranin/alcian blue, ferric chloride, acid phloroglucin. secretory cavities are present in the lamina, petiolule, petiole, pulvinus and leaf primordium in d. pentaphylla, but not in d. pinnata, and can be considered an important character for species diagnosis. other leaf characters were uninformative in delimiting dahlstedtia species. there is cambial activity in the petiolule, petiole and pulvinus. this study, associated with other available data, supports the recognition of two species in dahlstedtia.
Argyrolobium armindae (Leguminosae, Papilionoideae), una nueva especie canaria  [cached]
Marrero, águedo
Anales del Jardín Botánico de Madrid , 2008,
Abstract: Argyrolobium armindae Marrero Rodr. (Leguminosae, Papilionoideae) from Gran Canaria (Canary Islands, Spain) is here described. This is the first report of this genus, not only for Canary Islands but also for Macaronesia. The taxonomic relationships between Argyrolobium armindae and related species, habitat, ecology, biogeographical significance and conservation status are discussed. Se describe una nueva especie, Argyrolobium armindae Marrero Rodr. (Leguminosae, Papilionoideae), de Gran Canaria (Islas Canarias, Espa a). Esta constituye la primera cita de este género no sólo para Canarias, sino también para el conjunto de Macaronesia. Se discuten las relaciones taxonómicas de Argyrolobium armindae con otras especies próximas, hábitat, ecología, significado biogeográfico y estado de conservación.
Nissolia ruddiae (Leguminosae, Papilionoideae), una especie nueva de la cuenca del Balsas, México  [cached]
Ramiro Cruz Durán,Mario Sousa S.
Acta botánica mexicana , 2004,
Abstract: Se describe e ilustra Nissolia ruddiae (Leguminosae, Papilionoideae), una especie nueva de la Cuenca del Balsas en los estados de Guerrero, Morelos y Puebla, México. Esta planta es afin a N. hintonii Sandwith, pero difiere por sus inflorescencias fasciculadas, pubescencia glandular-setácea escasa, hojas más grandes y partes florales más peque as, de diferente forma.
Mario Sousa S.
Acta botánica mexicana , 2009,
Abstract: Se describe una nueva sección, sect. Standleyi, para el género Lonchocarpus (Leguminosae, Papilionoideae, Millettieae) basada en forma esencial en conceptos propuestos con anterioridad, pero no válidamente publicados. También se describen e ilustran seis taxa nuevos para la ciencia: cinco especies, Lonchocarpus martinezii, L. savannicola, L. semideserti, L. stenophyllus, L. tuxtepecensis y una nueva subespecie L. lanceolatus subsp. calciphilus. Se propone por primera vez como binomio más antiguo a Lonchocarpus pubescens, quedando bajo sinonimia L. dipteroneurus y cuatro nombres previamente asociados. Para contrastar las diferencias se proporcionan dos claves de los taxa, una para las especies de Mesoamérica y Sudamérica y otra para la nueva sección y la sect. Lonchocarpus.
Una nueva especie Venezolana de stylosanthes (leguminosae: papilionoideae: dalbergieae)
Calles,Teodardo; Schultze-Kraft,Rainer;
Acta Botánica Venezuelica , 2009,
Abstract: a new venezuelan species of leguminosae, stylosanthes venezuelensis calles et schultze-kr., collected in caracas, is described and illustrated. the differences between the new taxon and s. scabra vogel, a closely related species, are indicated.
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