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31 results for “Pitcairnia”
Herbarium specimen image of Pitcairnia campii L.B.Sm., part of the collection of National Museum of Natural History, Paris
Part of a training dataset of scanned herbarium specimens. The data paper and a summary landing page will be published on Zenodo as it gets published.<br><br>Content of this deposition:<br><br>- A JSON-LD datafile listing the label data associated with this herbarium specimen. The Darwin and Dublin Core data standards are used for most values.<br>- A JPEG image file of the scanned herbarium sheet.<br>- Two PNG files containing segmented image overlays of the scanned herbarium sheet. The _all extension indicates that all labels, color charts and pieces of text have received a different color against a black background color. The _sel extension indicates that these elements are white if they're barcode labels, yellow if they're color charts and red if they're anything else.
FIG. 3. — Dense Pitcairnia L in Updated checklist of French Guianan Asilidae (Diptera) with a focus on the Mitaraka expedition
FIG. 3. — Dense Pitcairnia L'Héritier, 1789 vegetation on rocky outcrop 'savane roche no. 2' within tropical lowland rainforest at Mitaraka (photo: Marc Pollet).
Checklist and distribution of Pitcairnia species in the Brazilian Amazon
<p>We present here the checklist of Pitcairnia (Bromeliaceae) species in the Brazilian Amazon. It contains 24 species that occur in the Amazon basin and 211 distribution points. These two files contain information on the taxonomy, collection and geographic references of these taxa.</p>
Sequences of Pitcairnia flammea
<p><b>Geographic isolation and reduced population sizes can lead to local extinction, low efficacy of selection, and decreased speciation. However, population differentiation is an essential step of biological diversification. In allopatric speciation, geographically isolated populations differentiate and persist until the evolution of reproductive isolation and ecological divergence complete the speciation process. Pitcairnia flammea allow us to study the evolutionary consequences of habitat fragmentation on naturally disjoint rock outcrop species from the Brazilian Atlantic Rainforest (BAF). Our main results showed low to moderate genetic diversity within populations, and deep population structuring caused by limited gene flow, low connectivity, genetic drift and inbreeding of long-term isolation and persistence of rock outcrops populations throughout Quaternary climatic oscillations. Bayesian phylogenetic and model-based clustering analyses found no clear northern and southern phylogeographic structure commonly reported for many BAF organisms. Although, we found two main lineages diverging by approximately 2 Mya during the early Pleistocene, species delimitation analysis assigned most of the populations as independent evolving entities, suggesting an important role of disjoint rock outcrops in promoting high endemism in this rich biome. Lastly, we detected limited gene flow in sympatric populations although some hybridization and introgression were observed, suggesting a continuous of speciation processes in this species complex. Our data not only inform us about the extensive differentiation and limited gene flow found among Pitcairnia flammea species complex, they also contain information about the mechanisms that shape the genetic architecture of small and fragmented populations of isolated rock outcrop of recently radiated plants.</b></p> <p> </p>
FIGURE 3 in Pitcairnia frequens (Bromeliaceae), a neglected new species from Morro dos Seis Lagos, Amazonas, Brazil
FIGURE 3. Pitcairnia frequens occurrence places at Morro dos Seis Lagos and inflorescences details. A. Verde Lake. B. Dragão Lake. C. Rupiculous population in the Verde Lake. D. Population between shrubs near Dragão Lake. E. Compound inflorescence. F. Simple inflorescence. G. Spreading flowers.
FIGURE 4 in Pitcairnia frequens (Bromeliaceae), a neglected new species from Morro dos Seis Lagos, Amazonas, Brazil
FIGURE 4. Intersection of the three areas of protection that include the Morro dos Seis Lagos (Hill of the Six Lakes). The large and darkest spot into Morro dos Seis Lagos Biological Reserve represents Morro dos Seis Lagos. It is near BR-307 that connects the municipalities of São Gabriel da Cachoeira to Cucuí.
FIGURE 2 in Pitcairnia frequens (Bromeliaceae), a neglected new species from Morro dos Seis Lagos, Amazonas, Brazil
FIGURE 2. Micrographs of Pitcairnia frequens in cross section. A. General aspect of the leaf with smooth adaxial and abaxial contour, and abrupt transition between the aquiferous tissue and the chlorenchyma. B. Sclerenchymatic sheaths surrounding the vascular bundles and phloem fibers. C. Adaxial epidermises, sclerified hypodermis, and aquiferous hypodermis. D. Stomata on abaxial epidermis. E. Pedicle of a peltate scale on abaxial surface. AH-aquiferous hypodermis, EP-epidermis, SC-substomatal chamber, SH-sclerified hypodermis. Scale bars: A-200 mm; B-100 mm; C, D, E-50 mm.
FIGURE 1 in Pitcairnia frequens (Bromeliaceae), a neglected new species from Morro dos Seis Lagos, Amazonas, Brazil
FIGURE 1. Habit of Pitcairnia frequens. A. Flowering habit. B. Detail of spine and scales in adaxial surface. C. peduncle bract. D. Flower with floral bracts. E. Floral bract. F. Sepals. G. Petal and androecium. H. Gynoecium. I. Stigma. J. Transversal cut of ovary, showing its axial placentation.
FIGURE 6. Pitcairnia pugana, A in Novelties in Pitcairnia (Bromeliaceae; Pitcairnioideae): three new species from Mexico
FIGURE 6. Pitcairnia pugana, A) floral bract and flower, lateral view, B) flowering plant, C) inflorescence and flowers detail, D) dissected flower: D1 floral bract, D2 sepals, D3 petals, D4 stamens, D5 pistil and flower base, E) plant flowering in habitat, F) inflorescence in habitat, E. González-Rocha & P. Carrillo-Reyes 403, 404 (UAMIZ!). Photos: E. González-Rocha (A, B, D, F), and P. Carrillo-Reyes (C, E).
FIGURE 5. Pitcairnia gracielae, A in Novelties in Pitcairnia (Bromeliaceae; Pitcairnioideae): three new species from Mexico
FIGURE 5. Pitcairnia gracielae, A) flowers and floral bract, lateral view, B) flowering plant, A. Espejo 7400 (UAMIZ!), C) inflorescence, E. González-Rocha et al. 234 (UAMIZ!), D) dissected flower: D1 floral bract, D2 sepals, D3 petals, D4 stamens, D5 pistil, E. GonzálezRocha 91 (UAMIZ!), E) flowering plant in habitat, A. Espejo 6089 (UAMIZ!), F) inflorescence in habitat, E. González-Rocha 113 (UAMIZ!). Photos: A. Espejo (A, B, E), and E. González-Rocha (C, D, F).
FIGURE 3. Pitcairnia aleserratoae, A in Novelties in Pitcairnia (Bromeliaceae; Pitcairnioideae): three new species from Mexico
FIGURE 3. Pitcairnia aleserratoae, A) floral bract and flower, lateral view, B) flowering plant, C) inflorescence detail, D) dissected flower: D1 floral bract, D2 sepals, D3 petals, D4 stamens, D5 pistil, E) group of plants in habitat, F) base of a plant, E. González et al. 249 bis (UAMIZ). Photos: A. Espejo (E), and E. González-Rocha (A–D, F).
FIGURE 2 in Novelties in Pitcairnia (Bromeliaceae; Pitcairnioideae): three new species from Mexico
FIGURE 2. Comparison of plants and flowers of: A) Pitcairnia aleserratoae, B) P. gracielae, C) P. pugana, D) P. jaliscana, E) P. karwinskyana, F) P. palmeri, G) P. pteropoda, and H) type of P. micheliana. Photos: E. González-Rocha (A, B, C, E, F), L.J. HernándezBarón (plant, D), modified photo Chris Lloyd (flower, D), A. Espejo (G), and inflorescence and flower detail from the figure in the original description of P. micheliana, made by J.L. Goffart and J.R. Guillot (H).
FIGURE 1. A in Novelties in Pitcairnia (Bromeliaceae; Pitcairnioideae): three new species from Mexico
FIGURE 1. A) Combined distribution map for the species Pitcairnia aleserratoae, P. gracielae, P. pugana, P. jaliscana, P. karwinskyana P. micheliana, P. palmeri, and P. pteropoda.
FIGURE 5 in A multivariate analysis of the Pitcairnia palmeri group (Bromeliaceae: Pitcairnioideae)
FIGURE 5. Known distribution of Pitcairnia robert-downsii González-Rocha, Espejo, López-Ferr. & M. Castillo.
FIGURE 1 in A multivariate analysis of the Pitcairnia palmeri group (Bromeliaceae: Pitcairnioideae)
FIGURE 1. Herbarium specimens of A) Pitcairnia palmeri, B) Pitcairnia robert-downsii, C) P. colimensis, and D) P. compostelae.
FIGURE 4 in A multivariate analysis of the Pitcairnia palmeri group (Bromeliaceae: Pitcairnioideae)
FIGURE 4. Pitcairnia robert-downsii González-Rocha, Espejo, López-Ferr. & M. Castillo, nom. et stat. nov. A–B) Detail of the inflorescence, C) habitat and D) dissected flower.
FIGURE 3 in A multivariate analysis of the Pitcairnia palmeri group (Bromeliaceae: Pitcairnioideae)
FIGURE 3. Dendrogram of the cluster analysis applied to the Euclidean distance matrix (data transformed to log 2) of 12 morphological variables, grouped by the UPGMA fusion technique. The abbreviations correspond to: P. col: P. colimensis, P. com: P. compostelae, P. lon: Pitcarnia palmeri var. longebracteata and P. pal: P. palmeri var. palmeri. * Indicates the nomenclatural types.
FIGURE 2 in A multivariate analysis of the Pitcairnia palmeri group (Bromeliaceae: Pitcairnioideae)
FIGURE 2. Scatterplot between the first two axes (cumulative variance of 66.7 %) derived from the principal component analysis applied to 12 morphological variables transformed to log 2. The symbols correspond to Pitcairnia colimensis (♦), P. compostelae (▲), P. palmeri var. longebracteata (●) and P. palmeri var. palmeri (■).
FIGURE 1. A in Pitcairnia singularis (Pitcairnioideae, Bromeliaceae), a new species from Jalisco, Mexico
FIGURE 1. A. Plants in flower at type locality. B. Detail of the basal portion of Pitcairnia singularis, showing the reduced sheath like and the normal leaves. C. Oak forest habitat of P. singularis Flores-Argüelles, Espejo & López-Ferr.
FIGURE 2. Pitcairnia albifolia A in Pitcairnia albifolia (Bromeliaceae), a new species from the Talamanca Mountains in Veraguas Province, Panama
FIGURE 2. Pitcairnia albifolia A. Terrestrial plant at the type locality, flowering in habitat (Photo F. Hernández). B. Inflorescence with very dark purple petals (Photo F. Hernández). C. Overview of La Sabaneta in Santa Fe National Park (Photo A. Ibáñez). D. Part of a dry leaf showing the veins on the abaxially side (Photo D. A. Cáceres González).
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