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.
18
datasets available to search
ShareScore release 0.9.0
Dataset results
18 results for “Ptisana”
Linked collectors and determiners for: A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov..
Natural history specimen data linked to collectors and determiners held within, "A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov.". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/9c423299-73fd-4c27-b497-fa7b98850ed9">https://bionomia.net/dataset/9c423299-73fd-4c27-b497-fa7b98850ed9</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/9c423299-73fd-4c27-b497-fa7b98850ed9">https://gbif.org/dataset/9c423299-73fd-4c27-b497-fa7b98850ed9</a>. Formatted as a Frictionless Data package.
FIG. 7 in A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov.
FIG. 7. — Median-joining networks based on trnSGG and rps4-trnS sequences: A, the Ptisana attenuata clade; B, the P. salicina/P. soluta comb. nov., stat. nov./P. smithii clade. The size of each circle is proportional to the haplotype frequency. Undetected intermediate haplotypes on nodes are shown as black circles and hatch marks represent mutational steps separating haplotypes.
FIG. 6 in A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov.
FIG. 6. — Phylogram from the Bayesian phylogenetic analysis of the chloroplast DNA sequence data for Ptisana Murdock. Support values for branches are given in the order of Bayesian inference posterior probability; maximum parsimony bootstrap support; and maximum likelihood bootstrap support. Only values>0.80 PP and 60% BS are shown.
FIG. 4 in A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov.
FIG. 4. — Distribution map for the New Caledonian endemic species of Ptisana attenuata (Labill.) Murdock (), P. rolandi-principis (Rosenst.) Christenh. (Δ), and P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov. (, with unvouchered field observations indicated by a broken outline). Shaded areas are ultramafic substrates. The collecting sites of the sequenced P. attenuata samples are indicated.
FIG. 5 in A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov.
FIG. 5. — The holotype of Ptisana soluta (Compton) Murdock & Perrie, comb. nov., stat. nov. (Compton 1674, Ignambi, 1914, BM[BM000787128]) showing how the lamina transitions from 3-pinnate proximally to 2-pinnate distally. CC BY The Trustees of the Natural History Museum, London.
FIG. 3 in A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov.
FIG. 3. — Ptisana soluta (Compton) Murdock & Perrie, comb. nov., stat. nov., field photos: A, frond with lamina 3-pinnate proximally and 2-pinnate distally. The frond at top-right is P. attenuata (Labill.) Murdock; B, stipes are greenish-brown at a distance; C, abaxial surface of costae and fertile lamina, showing transition from 3-pinnate to 2-pinnate; D, stipe greenish-brown and smooth; E, stipules around stipe bases. Photos: A-D, Leon Perrie from near Nouméa; E, Rémy Amice, from near Nouméa.
FIG. 1 in A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov.
FIG. 1. — Ptisana attenuata (Labill.) Murdock, field photos: A, 3-pinnate frond; B, stipes are dark at a distance; C, abaxial surface of costae and lamina, with synangia; D, stipe dark and wrinkled; E, divided stipules around stipe bases. Photos: Leon Perrie, from near Nouméa.
FIGURE 4 in Revision of the fern family Marattiaceae in the Seychelles with two new species and a discussion of the African Ptisana fraxinea complex.
FIGURE 4. Ptisana laboudalloniana: A. A large plant with relatively small rhizome; Congo Rouge, Seychelles (photograph by B. Senterre), B. Leaves; Pérard, Seychelles (photograph by B. Senterre), C. Closer view to the rhizome and "stipules" (photograph by I. Fabre), D. common variation in the apex of pinnae (photograph by I. Fabre), E. Winged pinna rachis (photograph by I. Fabre), F. Unripe sporangia (photograph by I. Fabre), G. Ripe sporangia (photograph by B. Senterre).
FIGURE 3. A–E in Revision of the fern family Marattiaceae in the Seychelles with two new species and a discussion of the African Ptisana fraxinea complex.
FIGURE 3. A–E: Angiopteris chongsengiana. A. View of the 'stipules' and rhizome (photograph by B. Senterre), B. Winged secondary rachis, with sessile pinnules (photograph by I. Fabre), C. Mature sporangia and venuloids (photograph by B. Senterre), D. Wart-like bases of old scales on petiole (photograph by B. Senterre), E. Typical apex of a pinna (photograph by I. Fabre); F–J: Angiopteris madagascariensis. F. Massive rhizome ca. 60–70 cm high (photograph by B. Senterre), G. secondary rachis not winged (photograph by I. Fabre), H. Old sporangia and venuloids (photograph by B. Senterre), I. 'Stipule' (photograph by I. Fabre), J. Typical aspect of the basal pinna, bipinnate on mature individuals (photograph by I. Fabre).
FIGURE 2 in Revision of the fern family Marattiaceae in the Seychelles with two new species and a discussion of the African Ptisana fraxinea complex.
FIGURE 2. Angiopteris chongsengiana: A. Aerating areas of the petiole, B. Details of the venation and shape of pinnules, C. Distal part of a pinna showing the elongated terminal pinnule and winged rachis, D. Petiole base and 'stipules', E. Pinnule apex, F. Base of a middle pinna, G. Ripe sporangia. (illustrated by Katy Beaver from living and dried specimens, B. Senterre & I. Fabre 6172)
FIGURE 1 in Revision of the fern family Marattiaceae in the Seychelles with two new species and a discussion of the African Ptisana fraxinea complex.
FIGURE 1. Phylogenetic relationships within Marattiaceae resulting from the BI (50% majority-rule consensus tree) and MP analyses (strict consensus tree) based on the plastid region trnSGG. Values above and below branches indicate the support values for the BI and MP analyses (PP/BS, respectively), with thick branches for the most robustly supported (PP>0.95 and BS>80%). Dotted lines are not retrieved in MP tree. Names of the six marattioids genera are reported on the right. Bold taxa are from the Western Indian Ocean area and were sequenced for the purpose of this study.
Figure 5 from: Murdock AG, Chen C-W, Huang Y-M, Glenny D (2020) Affinities of the fern genus Ptisana (Marattiaceae) in the Solomon Islands, with descriptions of two new species. PhytoKeys 170: 1-23. https://doi.org/10.3897/phytokeys.170.59471
Figure 5 Comparison of Ptisana papuana (left column) and Ptisana smithii (right column) A, B whole plants Ptisana smithiiB showing its distinctively repand margins C, D fertile segments with mature synangia. Ptisana papuana (left) has longer synangia that reach nearly the midpoint between the margin and the midrib, and conspicuously serrate margins E, F Pulvini, closeup.
Figure 1 from: Murdock AG, Chen C-W, Huang Y-M, Glenny D (2020) Affinities of the fern genus Ptisana (Marattiaceae) in the Solomon Islands, with descriptions of two new species. PhytoKeys 170: 1-23. https://doi.org/10.3897/phytokeys.170.59471
Figure 1 Map of the Solomon Islands showing the locations of the selected specimens examined for each taxon and collections sequenced for this paper. Specimens from Vanikoro (Santa Cruz Islands) and surrounding countries shown in inset map (bottom left).
Figure 4 from: Murdock AG, Chen C-W, Huang Y-M, Glenny D (2020) Affinities of the fern genus Ptisana (Marattiaceae) in the Solomon Islands, with descriptions of two new species. PhytoKeys 170: 1-23. https://doi.org/10.3897/phytokeys.170.59471
Figure 4 Ptisana decipiens var. decipiens: A type specimen, with characteristically large segments B stipe showing scales C adaxial surface of fertile segments, showing vein spacing, synangial distance from margin, and winged costa. Ptisana decipiens var. delicata: D type specimen, with characteristically small segments E abaxial surface of fertile segment with maturing synangia. Photos: C.-W. Chen.
Figure 3 from: Murdock AG, Chen C-W, Huang Y-M, Glenny D (2020) Affinities of the fern genus Ptisana (Marattiaceae) in the Solomon Islands, with descriptions of two new species. PhytoKeys 170: 1-23. https://doi.org/10.3897/phytokeys.170.59471
Figure 3 Ptisana ambulans: A type specimen B live plant of type collection C abaxial surface of ultimate segment D segment attachment points and terminus of the costa. Photos: C.-W. Chen.
Figure 2 from: Murdock AG, Chen C-W, Huang Y-M, Glenny D (2020) Affinities of the fern genus Ptisana (Marattiaceae) in the Solomon Islands, with descriptions of two new species. PhytoKeys 170: 1-23. https://doi.org/10.3897/phytokeys.170.59471
Figure 2 Phylogeny of Ptisana based on rps4–trnS and trnSGG plastid sequence data. Bayesian consensus tree, with branch support values (ML bootstrap support / Bayesian posterior probability); • = 100. The four species recognized in the Solomon Islands are marked by colored bars. Key clades discussed in text marked by arrows.
Figure 6 from: Murdock AG, Chen C-W, Huang Y-M, Glenny D (2020) Affinities of the fern genus Ptisana (Marattiaceae) in the Solomon Islands, with descriptions of two new species. PhytoKeys 170: 1-23. https://doi.org/10.3897/phytokeys.170.59471
Figure 6 Comparison of venation and margins (A–E) and apices of ultimate segments (F, G) of the Ptisana species in the Solomon Islands A, FP. ambulansB, GP. decipiens var. decipiensC, HP. decipiens var. delicataD, IP. papuanaE, JP. smithii. Scale bars: 5 mm.
FIG. 2 in A synopsis of Ptisana Murdock ferns (Marattiaceae) in New Caledonia based on sequence data and morphology with the recognition of a new vulnerable species, P. soluta (Compton) Murdock & Perrie, comb. nov., stat. nov.
FIG. 2. — Ptisana rolandi-principis (Rosenst.) Christenh. field photos: A, adaxial surface of individual with several fronds, with finger for scale. B, abaxial surface of frond with immature synangia. Photos: Leon Perrie, from Plateau de Dogny.
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.