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.
223
datasets available to search
ShareScore release 0.9.0
Dataset results
223 results for “Asclepiadoideae”
Appendix 1 in Contribution to chromosome numbers and phylogeny of Turkish Vincetoxicum Wolf (Apocynaceae, Asclepiadoideae)
Appendix 1. Locality information, voucher specimens and accession numbers for sequences in GenBank (NCBI) of the examined specimens used for molecular (Mol.) and cytological (Cyt.) studies. Sequences previously published are indicated in brackets (A=Liede-Schumann et al. 2016, B=Liede- Schumann et al. 2012, C=Liede et al. 2002, D=Liede 2001, E=Berner & Carter Unpublished, F=Lahaye et al. 2005, G=Liede & Täuber 2002, H=Goyder et al. 2007, PS=present study).
Fig. 2 in Hemipogon trilobatus sp. nov. (Apocynaceae: Asclepiadoideae), a new microendemic from Chapada dos Veadeiros, Central Brazil
Fig. 2. Habitat and distribution of Hemipogon trilobatus Bitencourt & Rapini sp. nov. A. Open savannah in Chapada dos Veadeiros, state of Goiás, Brazil. Photo by CB. B. Map showing the geographic distribution of H. trilobatus sp. nov. in the Cerrado domain (shaded area at reference map in A) and its occurrence (black star) nearby the Chapada dos Veadeiros National Park. Images and distribution maps were built and exported using ArcGIS online (https://www.arcgis.com). © Esri and its licensors, all rights reserved.
Fig. 1 in Hemipogon trilobatus sp. nov. (Apocynaceae: Asclepiadoideae), a new microendemic from Chapada dos Veadeiros, Central Brazil
Fig. 1. Hemipogon trilobatus Bitencourt & Rapini sp. nov. A. Habitus. B. Cyme with two flowers and a bud. C. Flower. D. Flower with calyx and two corolla lobes removed to show the gynostegium. E. Corolla lobe, adaxial view. F. Anther with a staminal corona lobe basally attached. G. Corona lobe showing the 3-lobed apex, adaxial view. H. Gynostegium, viewed from above. I. Pollinarium. Drawn by Pétala Gomes Ribeiro from the holotype (IBGE[33546]).
Fig. 4. – Tylophora mayottae W.D in Two new species of Apocynaceae, Asclepiadoideae from Mayotte
Fig. 4. – Tylophora mayottae W.D. Stevens, Labat & Barthelat A. Habit; B. Gynostegium; C. Pollinarium.
Fig. 4. – Tylophora mayottae W.D in Two new species of Apocynaceae, Asclepiadoideae from Mayotte
Fig. 4. – Tylophora mayottae W.D. Stevens, Labat & Barthelat A. Habit; B. Gynostegium; C. Pollinarium. [Boivin 3210, P] [Drawing: A. Arbeláez]
Fig. 2 in Two new species of Apocynaceae, Asclepiadoideae from Mayotte
Fig. 2. – Field pictures of the new species Marsdenia mayottae W.D. Stevens, Labat & Barthelat. [Photos: F.Barthelat]
Linked collectors and determiners for: Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia.
Natural history specimen data linked to collectors and determiners held within, "Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/2ca41b6f-e201-4093-9c51-f79abb72b834">https://bionomia.net/dataset/2ca41b6f-e201-4093-9c51-f79abb72b834</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/2ca41b6f-e201-4093-9c51-f79abb72b834">https://gbif.org/dataset/2ca41b6f-e201-4093-9c51-f79abb72b834</a>. Formatted as a Frictionless Data package.
Fig. 2 in Two new species of Apocynaceae, Asclepiadoideae from Mayotte
Fig. 2. – Field pictures of the new species Marsdenia mayottae W.D. Stevens, Labat & Barthelat.
Data from: Long-term persisting hybrid swarm and geographic difference in hybridization pattern: genetic consequences of secondary contact between two Vincetoxicum species (Apocynaceae–Asclepiadoideae)
Background: During glacial periods, glacial advances caused temperate plant extirpation or retreat into localized warmer areas, and subsequent postglacial glacial retreats resulted in range expansions, which facilitated secondary contact of previously allopatric isolated lineages. The evolutionary outcomes of secondary contact, including hybrid zones, dynamic hybrid swarm, and resultant hybrid speciation, depends on the strengths of reproductive barriers that have arisen through epistatic and pleiotropic effects during allopatric isolation. The aim of this study was to demonstrate refugia isolation and subsequent secondary contact between two perennial Asclepioid species and to assess the genetic consequences of the secondary contact. We modeled the range shift of two ecologically distinct Vincetoxicum species using the species distribution model (SDM) and assessed the genetic consequences of secondary contact by combining morphological and genetic approaches. We performed morphometric analysis (592 individuals) and examined 10 nuclear microsatellites (671 individuals) in V. atratum, V. japonicum, and putative hybrid populations. Results: Multivariate analysis, model-based Bayesian analysis, and non-model-based discriminant analysis of principal components confirmed the hybridization between V. atratum and V. japonicum. High pollen fertility and a lack of linkage disequilibrium suggested that the hybrid populations may be self-sustaining and have persisted since V. atratum and V. japonicum came into contact during the post-glacial period. Moreover, our findings show that the pattern of hybridization between V. atratum and V. japonicum is unidirectional and differs among populations. Geographically-isolated hybrid populations exist as genetically distinct hybrid swarms that consist of V. atratum-like genotypes, V. japonicum-like genotypes, or admixed genotypes. In addition, Bayesian-based clustering analysis and coalescent-based estimates of long-term gene flow showed patterns of introgressive hybridization in three morphologically 'pure' V. japonicum populations. Conclusion: In this study, we demonstrated that climatic oscillations during the Quaternary period likely led to species range shift and subsequently secondary contact. Hybrid populations may be self-sustaining and have persisted since V. atratum and V. japonicum came into contact during the post-glacial period. Pattern of hybridization between V. atratum and V. japonicum is unidirectional and differs among populations. We concluded that these differences in the genetic consequences of secondary contact are caused by historical colonization processes and/or natural selection.
Data from: Multilocus phylogenetics of new world milkweed vines (Apocynaceae, Asclepiadoideae, Gonolobinae)
Subtribe Gonolobinae of the cosmopolitan family Apocynaceae is diverse and represents the largest radiation of milkweeds in the New World (~500 species). The largest genus, Matelea, is an amalgam that was united largely by a perceived lack of discrete morphological variation, particularly in floral structures. Using plastid and nuclear DNA sequences, we estimate a phylogeny of Gonolobinae using four chloroplast loci and three cloned nuclear regions. We investigate monophyly of Matelea and other established and provisional genera via a series of hypothesis tests. We find variable support and considerable conflict among the gene trees. Despite this, our data confirm the paraphyly of Matelea while Gonolobus and other segregate genera receive some support as monophyletic assemblages. We attribute conflicting signal in our data primarily to incomplete lineage sorting, a likely result of rapid radiation. Ancestral character reconstructions of growth form, fruit, and corolla morphology reveal a woody twining growth form to be plesiomorphic with one to two transitions to an herbaceous, non-twining growth form followed by one putative reversal to the woody twining growth form in the subtribe. Plesiomorphic states for fruit ornamentation and corolla shape are less clear and these characters exhibit high levels of homoplasy. This study is one of the most comprehensive phylogenies of gonoloboid milkweeds to date and the first to sample multiple nuclear loci and include allelic data.
FIGURE 3. Hoya phuwuaensis Kidyoo. A, B in A new species, Hoya honglenae and the first report of H. acuminata and H. phuwuaensis (Apocynaceae, Asclepiadoideae) in the flora of Vietnam
FIGURE 3. Hoya phuwuaensis Kidyoo. A, B. Flattened portion of plant with flowers (A) and leaves (B). C. Latex on the stem cut. D. Inflorescence, view from above. E. Inflorescence, frontal view. F. Flowers, side view. G. Pedicel and flowers, frontal view and view from back. H. Corolla, adaxial side. I. Corona, view from above and from below. J. Corona, side view. K. Flower, sagittal section. L. Pollinarium, view from different sides. M. Calyx, with exposed pistil. All photos made from plant used for the preparation of the herbarium specimen BV 1667 by Nguyen Van Canh, photo correction and design by L. Averyanov and T. Maisak.
FIGURE 1 in A new species, Hoya honglenae and the first report of H. acuminata and H. phuwuaensis (Apocynaceae, Asclepiadoideae) in the flora of Vietnam
FIGURE 1. Hoya acuminata (Wight) Hooker. A. Flattened flowering plant, all leaves are shown from abaxial side. B. Intact flowering plant. All photos made from plant used for the preparation of the herbarium specimen AL 2040 by L. Averyanov.
FIGURE 2 in A new species, Hoya honglenae and the first report of H. acuminata and H. phuwuaensis (Apocynaceae, Asclepiadoideae) in the flora of Vietnam
FIGURE 2. Hoya honglenae Aver., Vuong, Bao & V.C.Nguyen. A, B. Flattened portion of plant with leaves (A) and flowers (B). C. Portion of the stem. D. Petiole. E. Latex on the stem cut. F. Inflorescence with opening flower buds. G. Inflorescence with opening flowers, view from above. H. Inflorescence with fully open flowers. I. Intact fully open flowers, frontal view. J. Separated flowers and pedicel, frontal view and view from back. K. Pedicel and calyx, side view. L. Pedicel surface. M. Flower, half side view. N. Corolla, adaxial and abaxial side. O. Corona, views from different sides. P. Flower, sagittal section. Q. Pollinaria, view from different sides. R. Calyx with exposed pistil. S. Ovaries. All photos made from plant used for the preparation of the type herbarium specimen AL 1399 by Nguyen Van Canh and Truong Ba Vuong, photo correction and design by L. Averyanov and T. Maisak.
FIGURE 3 in Ceropegia strophanthiflora (Apocynaceae-Asclepiadoideae)-a magnificent and rare new species from South Africa at the brink of extinction
FIGURE 3. Flowers of Ceropegia rehmannii (A,B) and details of reproductive structures of C. strophanthiflora (C,E,G) in comparison to its closest relative C. rehmannii (D,F,H). A, Inflorescence of C. rehmannii. B, Close-up image of C. rehmannii flower. C,D, Sideview of gynostegium. E,F, Top-view of gynostegium. G,H, Pollinarium. Scale bars: 1 cm (A), 2 mm (B), 0.5 mm (C–F), 200 µm (G,H). Photographs: David Styles (A,B) and Annemarie Heiduk (C–H).
FIGURE 1 in Ceropegia strophanthiflora (Apocynaceae-Asclepiadoideae)-a magnificent and rare new species from South Africa at the brink of extinction
FIGURE 1. Ceropegia strophanthiflora from the south-western edge of the Maputaland Centre of Endemism in northern KwaZulu-Natal, South Africa. A,B, Habit of a plant in habitat. C, Excavated tuber. D, Follicle with two developed mericarps. E, Habitat at the type locality. Scale bars: 5 mm (A), 1 cm (B–D). Photographs: David Styles (A–C, E) and Annemarie Heiduk (D).
FIGURE 4 in Another remarkable new species of Dictyanthus (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae) with a long stylar head from Mexico
FIGURE 4. Dictyanthus unicornus (A) and morphologically similar species. B. Dictyanthus ceratopetalus. C. Dictyanthus eximius. D. Dictyanthus lautus. E. Dictyanthus macvaughianus. F. Dictyanthus nichongus. G. Dictyanthus pavonii. Credits: A) Fernando Pío-León, B) Oliver Komar, C), D) and G) Leonardo Alvarado-Cárdenas, E) David Juárez García, F) Raúl Sánchez.
FIGURE 1. Dictyanthus unicornus A. Branch segment with inflorescence and flower bud. B in Another remarkable new species of Dictyanthus (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae) with a long stylar head from Mexico
FIGURE 1. Dictyanthus unicornus A. Branch segment with inflorescence and flower bud. B. Detail of leaf base with colleters. C. Flower. D. Longitudinal section of the flower. E. Apex of the stylar head. F. Pollinaria. G. Fruit. Illustration of Quiyahuitl Colibrí Fernández Armendáriz, based on holotype J. F. Pío-León & M. G. Millán-Otero 375.
FIGURE 2. Dictyanthus unicornus A. Branch with leaves. B. Leaves and flower bud. C in Another remarkable new species of Dictyanthus (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae) with a long stylar head from Mexico
FIGURE 2. Dictyanthus unicornus A. Branch with leaves. B. Leaves and flower bud. C. Top view of flower. D. Lateral view of flower. E. Fruit. Credits: J. F. Pío-León.
FIGURE 4. Gonolobus caamalii Carnevali & R. Duno. A in Twice lost, twice found: A new species of Gonolobus (Apocynaceae: Asclepiadoideae) with a reappraisal of the genus in the Yucatan Peninsula Biotic Province
FIGURE 4. Gonolobus caamalii Carnevali & R. Duno. A. Frontal view of the flower in anthesis. B. Posterior view of the flower featuring the reflexed calyx. C. Close up of the center of the flower with the gynostemium. Note the dark rim of the gynostemium head, the dark wine color of the anther appendages and the margins of the bright yellow green corona. Also, note the line of trichomes along the right margin of each corolla lobe as well as the reddish-brown band around the corona at the base of the corolla lobes. D. ¾ view of the center of the flower featuring the corona lobes. E. Flowering plant at the type locality. All based upon the type collection (G. Carnevali, R. Duno & M.A. Caamal Dzul 8573, CICY, GH, MEXU, MO).
FIGURE 3 in Twice lost, twice found: A new species of Gonolobus (Apocynaceae: Asclepiadoideae) with a reappraisal of the genus in the Yucatan Peninsula Biotic Province
FIGURE 3. Gonolobus species of the YPBP. A. Gonolobus barbatus (based upon G. Carnevali 8584, CICY). B. G. cteniophorus (based upon G. Carnevali 7547, CICY). C. G. fraternus (based upon L. Ibarra-González s.n. (unvouchered)). D. Gonolobus leianthus (B.K. Holst s.n, SEL). E-F. Gonolobus stenanthus subsp. stenanthus (based upon L. Ibarra-González 603, CICY). G-I Gonolobus stenanthus subsp. yucatanensis (G based on Diana Beas s.n., unvouchered. H. based upon M.A. Caamal 01, CICY; I. (Based upon G. Carnevali et al. 8377, CICY, GH, MO). Photographs: A-B and I, G. Carnevali. C and E-F, León Ibarra González. D, Bruce K. Holst, downloaded from https:// www.naturalista.mx/observations/35867653) G, Diana Beas, downloaded from https://www.naturalista.mx/observations/54694745; H, Miguel Ángel Caamal.
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.