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194 results for “Chamaecrista”
FIGURE 3 in A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy
FIGURE 3. Distribution of Chamaecrista sempreviva. A. Espinhaço Range in Brazil (highlighted in yellow); B. Espinhaço Meridional in Minas Gerais (highlighted in yellow); C. Geographical location of known populations of Chamaecrista sempreviva in Espinhaço Range (cross hatched area: Rio Preto State Park).
FIGURE 4 in A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy
FIGURE 4. Anatomical features in species of Chamaecrista series Unijugae. A. Bulbous trichomes in Chamaecrista sempreviva and B–C. C. catapodia; D. Thick cuticle and stomatal crest in C. petiolata; E. Mucilage detected by toluidine blue staining in epidermal cells of C. sempreviva and F. C. monticola; G. Idioblasts in leaflet midrib of C. catapodia; H. Idioblasts in leaflet midrib of C. petiolata; I. Idioblasts in leaflet mesophyll of C. catapodia; J. Idioblasts in mesophyll of C. petiolata.
FIGURE 1. Chamaecrista sempreviva. A in A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy
FIGURE 1. Chamaecrista sempreviva. A. Habit; B. Detail of leaflet (abaxial surface); C. Detail of leaflet (adaxial surface); D. Apex of leaflet showing long mucro; E. Detail of rachis showing single trichome; F. Detail of pedicel showing trichomes; G. Bract; H. Calyx opened out (outer surface); I. Petals: Median petal, the upper lateral petals, and lower lateral petals; J. Androecium with anthers much longer than the filaments; K. Gynoecium; L. Pod; M. Seed. (all from A.P. Fortuna-Perez et al., 1594). Illustrated by Jesiani Rigon.
FIGURE 2. Chamaecrista sempreviva. A, B, D in A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy
FIGURE 2. Chamaecrista sempreviva. A, B, D. Stems showing leaves and, inflorescences; C. Habitat: Cerrado ("campo rupestre"); E. Detail of bifoliolate leaves; F. Flowers. Photos by A.P. Fortuna-Perez.
Population genetic and environmental data for Chamaecrista fasciculata
<p><em>Chamaecrista fasciculata</em> is a widely distributed, phenotypically variable species in the eastern U.S. Whereas studies have demonstrated genetic structure and local adaptation in northern areas of its distribution, there has been no comparison of genetic variability among populations at the southern extent where phenotypic variation is more complex. We characterized genetic variation at 14 microsatellite loci for populations in Mississippi and Alabama and compared this to variation in a phenotypic trait, leaf pubescence. Geographic distance, climatic variables, and elevation were evaluated as factors to explain the observed patterns of genetic diversity. A significant amount of variation (19%) resided among populations, but most variation (68%) was among individuals. Assignment of individuals into genetic groups suggests two primary clusters, but these groups are not concordant with known geographical or ecological breaks, nor phenotypic variants. Genetic structure at a regional scale can be characterized as isolation by distance, while environmental factors may play a secondary role in limiting gene flow at local scales. Mean population FST is strongly associated with allelic diversity and heterozygosity, suggesting that genetic drift influences population variation. Despite the presence of genetic and phenotypic variation in southern populations of <em>C. fasciculata</em>, the lack of concordant patterns between these types of variation indicate that they are not driven by the same factors. This study demonstrates how local factors differentially influence the maintenance of intraspecific variation and suggest the southern distributional range is an active area of evolution for <em>C. fasciculata</em></p>
FIGURE 5. Chamaecrista viscosa. A and B. Habit, C and D. Foliage, E. Leaves. Inflorescence, G in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE 5. Chamaecrista viscosa. A and B. Habit, C and D. Foliage, E. Leaves. Inflorescence, G. Buds, DE. Flower, E. Fruits. Photographs by A.O. Souza.
FIGURE. Chamaecrista oligosperma. A. Fertile branch, B in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista oligosperma. A. Fertile branch, B. Detail of the indumentum of the branch, C. Stipule, D and E. Leaflets, F. Bract, G. Bracteole, H. Bud, I. Flower, J. Sepal, K. Petals, L. Stamen, M. Gynoecium, N. Fruit. Drawned by Renato Galhardo.
FIGURE 6. Chamaecrista viscosa. A. Fertile branch, B in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE 6. Chamaecrista viscosa. A. Fertile branch, B. Detail of the indumentum of the branch, C. Stipule, D. Leaf, E. Detail of the abaxial face of the leaflet, F. Bud, G. Flower, H. Sepal, I. Petals, J. Stamen, K. Gynoecium, L. Fruit. Drawned by Renato Galhardo.
FIGURE. Chamaecrista jacobinea. A. Fertile branch, B in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista jacobinea. A. Fertile branch, B. Detail of the indumentum of the branch, C. Stipule, D. Leaf, E. Detail of the abaxial face of the leaflet, F. Bract, G. Bud, H. Flower, I. Sepal, J. Petals, K. Stamen, L. Gynoecium, M. Fruit. Drawned by Renato Galhardo.
FIGURE. Chamaecrista major. A. Habit, B–D. Fertile branches, E. Leaves, F. Inflorescences, G and H. Flowers, I in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista major. A. Habit, B–D. Fertile branches, E. Leaves, F. Inflorescences, G and H. Flowers, I. Fruit. Photographs by A.O. Souza.
FIGURE. Chamaecrista jacobinea. A. Habit, B. Foliage, C. and D. Fertile Branch, E. Leaves, F. Inflorescence, G. Bud, H in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista jacobinea. A. Habit, B. Foliage, C. and D. Fertile Branch, E. Leaves, F. Inflorescence, G. Bud, H. Flower. Photographs by A.O. Souza.
FIGURE. Chamaecrista hispidula. A. Habit, B–D. Fertile branch, E. Leaf, F–H. Flower, I in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista hispidula. A. Habit, B–D. Fertile branch, E. Leaf, F–H. Flower, I. Fruit. Photographs by R. Queiroz & A.O. Souza.
FIGURE. Chamaecrista fagonioides. A. Habit, B. and C. Fertile branches, D. and E. Leaves, F. Inflorescence, G–I in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista fagonioides. A. Habit, B. and C. Fertile branches, D. and E. Leaves, F. Inflorescence, G–I. Flowers. Photographs by A.O. Souza.
FIGURE. Chamaecrista chapadae. A. Fertile branch, B in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista chapadae. A. Fertile branch, B. Detail of branch indumentum, C. Stipule, D. Leaf, E. Detail of the leaflet, F. Bract, G. Bracteole, H. Bud, I. Flower, J. Sepal, K. Petal, L. Stamen, M. Gynoecium, N. Fruit. Drawned by Renato Galhardo.
FIGURE 6. Chamaecrista juruenensis. A. Fertile branch, B in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE 6. Chamaecrista juruenensis. A. Fertile branch, B. Detail of the indumentum of the branch, C. Stipule, D. Leaf, E. Detail of the abaxial surface of the leaflet, F. Bracts, G. Bracteole, H. Bud, I. Flower, J. Sepal, K. Petals, L. Stamen, M. Gynoecium, N. Fruit. Drawned by Renato Galhardo.
FIGURE. Chamaecrista chapadae. A. Habit, B in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista chapadae. A. Habit, B. Adaxial face of leaf, C. Abaxial face of leaf, D. and E. Fertile branches, F. and G. Inflorescences, H. Buds, I. Flower. Photographs by A.O. Souza.
FIGURE. Chamaecrista campestris. A. Fertile branch, B. Stipule, C. Folha, D in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista campestris. A. Fertile branch, B. Stipule, C. Folha, D. Detail of the abaxial face of the leaflet, E. Bract, F. button, H. Flower, I. Sepal, J. Petals, K. Stamen, L. Gynoecium, M. Fruit. Drawned by Renato Galhardo.
FIGURE. Chamaecrista roncadorensis. A. Fertile branch, B. Stipule, C. Leaf, D. Leaflet detail, E. Bract, F. Bracteole, G. Bud, H. Flower, I. Sepal, J. Petals, K. Stamen, L. Gynoecium, M in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista roncadorensis. A. Fertile branch, B. Stipule, C. Leaf, D. Leaflet detail, E. Bract, F. Bracteole, G. Bud, H. Flower, I. Sepal, J. Petals, K. Stamen, L. Gynoecium, M. Fruit. Drawned by Renato Galhardo.
FIGURE. Chamaecrista oligosperma. A and B. Fertile branch, C and D. Inflorescences, E and F. Flower, G and H. Fruits. Photographs byA.O in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista oligosperma. A and B. Fertile branch, C and D. Inflorescences, E and F. Flower, G and H. Fruits. Photographs byA.O. Souza.
FIGURE 5. Chamaecrista carobinha. A. and B. Habit, C. Fertile branch, D. and E. Flowers, F. Leaves, G. and H in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE 5. Chamaecrista carobinha. A. and B. Habit, C. Fertile branch, D. and E. Flowers, F. Leaves, G. and H. Inflorescence. Photographs by A.O. Souza.
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