Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
1,268
datasets available to search
ShareScore release 0.7.1
Dataset results
1,268 results for “Melastomataceae”
Discordance in a South African Memecylon clade (Melastomataceae): Evidence for reticulate evolution
<p><em>Premise of research. </em>Evergreen forests in eastern South Africa have high biodiversity but are limited in extent and have a highly fragmented distribution. Populations of forest plants are thus geographically isolated, and fine-scale evolutionary studies of these lineages might yield important insights into the history and assembly of the forests themselves. Despite their morphological diversity, a prior study showed that three South African <em>Memecylon</em> taxa in Melastomataceae (<em>M. natalense</em>, <em>M. bachmannii</em>, and <em>M. australissimum</em>) had almost identical nuclear ribosomal spacer sequences. Our study investigates phylogenetic relationships within this clade using multiple samples collected across populations and a next-generation phylogenomic approach.</p> <p><em>Methodology. </em>We used 87 low-copy nuclear (LCN) loci to examine relationships among these taxa using both concatenated and coalescent methods. We further used LCN loci to estimate phylogenetic networks and SNPs derived from LCN genes for STRUCTURE analysis of South African <em>Memecylon</em> populations. Finally, we employed two approaches (flow cytometry and SNPs) to infer the ploidy levels of these three taxa.</p> <p><em>Pivotal results. </em>Our investigations showed discordance among gene trees and the species tree, and low statistical support for relationships indicating that species monophyly cannot be recovered from this phylogenomic analysis. Phylogenetic networks and population structures showed that the South African <em>Memecylon </em>clade may be affected by gene flow and reticulate evolution. Flow cytometry and SNP-based estimations provided evidence for polyploidy within this group.</p> <p><em>Conclusions.</em> We found no evidence of monophyly for species within the South African <em>Memecylon</em> clade, which we infer to be the consequence of reticulation and recent and rapid evolution. More cytological studies and genomic data are needed to elucidate the evolutionary history of this group. Additionally, our study identifies priority populations within the South African Memecylon clade for conservation.</p>
Figure 4 in A phytophagous braconid, Allorhogas conostegia sp. nov. (Hymenoptera: Braconidae), in the fruits of Conostegia xalapensis (Bonpl.) D. Don (Melastomataceae)
Figure 4. Volume of fruits with and without galls for the four development stages (A = stage 1, B = stage 2, C = stage 3, D = stage 4).
Figure 5 in A phytophagous braconid, Allorhogas conostegia sp. nov. (Hymenoptera: Braconidae), in the fruits of Conostegia xalapensis (Bonpl.) D. Don (Melastomataceae)
Figure 5. Mean number of seeds for all fruits, with and without galls, at both sites of study. Data are mean ± standard deviation (SD), or ± 1.96 × standard error (SE).
Figure 1 in A phytophagous braconid, Allorhogas conostegia sp. nov. (Hymenoptera: Braconidae), in the fruits of Conostegia xalapensis (Bonpl.) D. Don (Melastomataceae)
Figure 1. Allorhogas conostegia Marsh and Shaw, female. (A) Head, anterior view (scale bar 0.3 mm); (B) head, dorsal lateral view (scale bar 0.3 mm); (C) mesosoma, dorsal view (scale bar 0.5 mm); (D) mesopleuron, lateral view (scale bar 0.3 mm); (E) metasoma, dorsal view (scale bar 0.3 mm); (F) ovipositor, lateral view (scale bar 0.03 mm).
Figure 1 in Natural history of Peucetia flava (Araneae, Oxyopidae): seasonal density fluctuation, phenology and sex ratio on the glandular plant Rhyncanthera dichotoma (Melastomataceae)
Figure 1. (A) Seasonal fluctuations in the number of Peucetia flava individuals, egg sacs, abundance of leaves, flowers and fruits of Rhyncanthera dichotoma; (B) monthly rainfall and temperature variation during the study period (data from a meteorological station approximately 7 km from the study site); and (C) seasonal fluctuations in the numbers of free arthropods and of arthropods adhering to the glandular trichomes on leaves of R. dichotoma.
FIGURE 1 in Chaetogastra cogniauxiana (Melastomataceae), a new Brazilian species from the Chaetogastra gracilis complex
FIGURE 1. Photos of living plants of Chaetogastra gracilis. A. Habit. B. Flower without petals, showing the sericeous indument that covers the hypanthium. C. Tetramerous flower with light pink petals. D. Pentamerous flower with pink petals. E. Pentamerous flower with purple petals. (A–E by Fabrício Schmitz Meyer).
FIGURE 4 in Chaetogastra cogniauxiana (Melastomataceae), a new Brazilian species from the Chaetogastra gracilis complex
FIGURE 4. Ink illustration of a paratype of Chaetogastra cogniauxiana. A 1. Lower portion of the plant, with detail of the indument that covers the branches. A 2.Top portion of the plant, showing the inflorescence. B. Leaf, with detail of the indument that covers the adaxial surface of the blade. C. Leaf, with detail of the indument that covers the abaxial surface of the blade. D. Dendritic trichomes that cover
FIGURE 3 in Chaetogastra cogniauxiana (Melastomataceae), a new Brazilian species from the Chaetogastra gracilis complex
FIGURE 3. Ink illustration of the holotype of Chaetogastra cogniauxiana. A. Branch. B. Leaf, with detail of the indument that covers the adaxial surface of the blade. C. Leaf, with detail of the indument that covers the abaxial surface of the blade. D. Dendritic trichomes that cover the branches and hypanthium. E. Bracteole, abaxial surface. F. Floral bud and bracteole. G. Hypanthium and sepals (adaxial surface) seen from a longitudinal section of the hypanthium. H. Antesepalous stamen. I. Antepetalous stamen. J. Gynoecium. (A–K: based on Goldenberg & Michelangeli 703 at UPCB).
FIGURE 6 in Chaetogastra cogniauxiana (Melastomataceae), a new Brazilian species from the Chaetogastra gracilis complex
FIGURE 6. The position of Chaetogastra cogniauxiana in the phylogeny of Brachyotum and allies (Bayesian inference analysis based on sequences of six molecular markers: accD-psaI, nr-its, nr-ets, psbK-psbI, trnS-trnG, and waxy). A. Phylogenetic tree of tribe Melastomateae. B. Detail of the relatioships between the South American and Antillean species of Chaetogastra. Adapted from Meyer et al. (2021).
FIGURE 2 in Chaetogastra cogniauxiana (Melastomataceae), a new Brazilian species from the Chaetogastra gracilis complex
FIGURE 2. Photos of living plants of Chaetogastra cogniauxiana. A. Habit, with inflorescence with tetramerous and pentamerous flowers, and light pink petals. B. Part of the inflorescence. C. Floral bud. D. Tetramerous flower with purple petals. E. Pentamerous flower with purple petals. F. Pentamerous flower with white petals. G. Hexamerous flower with purple petals. (A–E and G by Fabrício Schmitz Meyer; F by Mathias Enrich Engels).
FIGURE 5 in Chaetogastra cogniauxiana (Melastomataceae), a new Brazilian species from the Chaetogastra gracilis complex
FIGURE 5. Distribution map for Chaetogastra cogniauxiana (red circles) and partial distribuition of C. gracilis (green circles). Abbreviations: BA—Bahia, DF—Distrito Federal; ES—Espírito Santo; GO—Goiás; MG—Minas Gerais; MS—Mato Grosso do Sul, MT—Mato Grosso; PR—Paraná; RJ—Rio de Janeiro; RS—Rio Grande do Sul; SC—Santa Catarina; SP—São Paulo.
FIGURE 1. Phyllagathis ovalifolia, A, B, C, E from Y. Liu 623 in A new species of Phyllagathis (Sonerileae, Melastomataceae) from Guangxi, China
FIGURE 1. Phyllagathis ovalifolia, A, B, C, E from Y. Liu 623 (SYS), D from 646 (SYS). A. Flowering branch. B. Retrorse hairs on the stem. C. Anther morphology in detail. D. Longitudinal section of old capsule showing the enlarged ovary crown, horned placental column, and thready placentas. E. Crystals in the petiole (raphides). Scale bars: 5 mm (C, D), 50 μm (E).
FIGURE 4 in A new species of Phyllagathis (Sonerileae, Melastomataceae) from Guangxi, China
FIGURE 4. Line illustration of Phyllagathis elegans. A. Habit. B. Top to bottom, adaxial and abaxial views of a leaf. C. Left to right, side and top views of a flower. D. Longitudinal section of a flower. E. Side view of a flower with petals and stamens removed, showing hypanthium and calyx lobes. F. Petals. G. Top to bottom, longitudinal section of 4-merous and 3-merous capsules.
FIGURE 3. Phyllagathis elegans, all from JHC343 in A new species of Phyllagathis (Sonerileae, Melastomataceae) from Guangxi, China
FIGURE 3. Phyllagathis elegans, all from JHC343 (A, IBK, IBSC, PE). A. Top view of a flower. B. Side view of a flower. C. Longitudinal section of a flower showing subequal stamens. D. Anther morphology in detail. E. Top view of young capsules. F. Longitudinal section of old capsule showing the enlarged ovary crown, horned placental column, and thready placentas. G. Crystals in the petiole (raphides). Scale bars: 5 mm (A–D, F), 50 μm (G).
FIGURE 2. Phyllagathis elegans, all from JHC343 in A new species of Phyllagathis (Sonerileae, Melastomataceae) from Guangxi, China
FIGURE 2. Phyllagathis elegans, all from JHC343 (A, IBK, IBSC, PE). A. Habitat. B. Flowering branch. C. Crooked hairs on the stem. D. Top to bottom, lateral, adaxial, and abaxial views of leaf, showing the bristles. E. Young inflorescence, showing the red bracts (one removed). F. Mature inflorescence.
FIGURE 2. Miconia lorenaensis and its habitat. A in Miconia lorenaensis (Melastomataceae), a new species from Colombian Andes
FIGURE 2. Miconia lorenaensis and its habitat. A. Habitat of M. lorenaensis. B. Fertile branch. C. Leaf apex, adaxial surface. D. Leaf base, adaxial surface. E. Inflorescence cyme, central flower in anthesis and laterals in buds. F. Immature fruits. Photographs A–B, F: Yeison Londoño (HUA), C–E: Carlos Morales (WCS Colombia).
FIGURE 1. Miconia lorenaensis. A. Fertile branch. B. Young leaves. C. Petiole insertion. D. Hypanthium. E in Miconia lorenaensis (Melastomataceae), a new species from Colombian Andes
FIGURE 1. Miconia lorenaensis. A. Fertile branch. B. Young leaves. C. Petiole insertion. D. Hypanthium. E. Hypanthium in longitudinal section. F. Stamen in dorsal, lateral and ventral views. Illustration by Ana Pareja, based on Jiménez & Castro 1.
FIGURE 4. Tigridiopalma longmenensis. A in Tigridiopalma longmenensis (Melastomataceae), a new species from Guangdong, China
FIGURE 4. Tigridiopalma longmenensis. A. Habitat, showing plants in wild. B. Plants, showing polychasium. C. Leave, adaxial side. D. Leave, abaxial side. E. Petiole. F. Detail of inflorescence, showing polychasium consisting of scorpioid cymes. G. Small and large bracts. H. Flowers, top view. I. Flower, side view. J. Young fruits, showing carinas on angles of hypanthia. All photos from the type locality, taken by H.F. Wang.
FIGURE 1 in Tigridiopalma longmenensis (Melastomataceae), a new species from Guangdong, China
FIGURE 1. The allopatric geographical distribution of Tigridiopalma longmenensis (one population) and T. magnifica (11 populations).
FIGURE 3. Phylogenetic tree inferred from maximum likelihood methods using 70 in Tigridiopalma longmenensis (Melastomataceae), a new species from Guangdong, China
FIGURE 3. Phylogenetic tree inferred from maximum likelihood methods using 70 protein-coding genes from the complete chloroplast genome sequences of Tigridiopalma longmenensis and other 15 species of Melastomataceae. The numbers beside the node indicate the bootstrap percentages (%) after 5000 replications of bootstrap sampling.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.