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.
61
datasets available to search
ShareScore release 0.9.0
Dataset results
61 results for “Melanthiaceae”
Differential sex allocation strategies between females and facultative hermaphrodites of Chamaelirium hisauchianum (Melanthiaceae)
<p><span>Species of <em>Chamaelirium</em> are known to be highly diversified in sexual characters, but there has been no detailed empirical approach to elucidate the mechanism and process of sexual diversification in the genus. This paper reports the results of population-based analyses on various sexual aspects of <em>C. hisauchianum</em> endemic to Japan. Of the 20 populations surveyed, eight (40%) were composed of facultative hermaphrodites highly labile in sexual expression, exhibiting a wide range of gradational variation from hermaphroditism through andromonoecy to male. The remaining 12 populations (60 %) consisted of females and facultative hermaphrodites. In them, 11.8–30.9% (mean 22.2%) of the individuals were female. With no reciprocal sex changes, females and facultative hermaphrodites were regarded as, plausibly genetically determined, discrete sex morphs. In contrast, sexual expression in both sex morphs appeared resource dependent. Besides the difference in floral sexual traits, the average ratio of ovuliferous flowers in females was higher than that in facultative hermaphrodites. The production of ovuliferous flowers by females was less susceptible to both field and cultivated conditions and tended to be significantly relatively higher under unfavorable growing conditions. Females were thus less plastic (or more persistent) in producing ovuliferous flowers (or female organs) than facultative hermaphrodites irrespective of internal and external conditions. In all populations, andromonoecious plants dominated (50.8–100%), which appeared to reflect the high plasticity in sex allocation of facultative hermaphrodites. The different modes of sex allocation were regarded as secondary sex characters and presumably stem from a difference in easiness or attainability of sexual reproduction between the two sex morphs. </span></p>
Differential sex allocation strategies between females and facultative hermaphrodites of Chamaelirium hisauchianum (Melanthiaceae)
Open the record for dataset details and reuse information.
FIGURE 2 in Paris nitida (Melanthiaceae), a new species from Hubei and Hunan, China
FIGURE 2. Pollen morphology of Paris nitida G. W. Hu, Z. Wang & Q. F. Wang under Scanning electron microscope (SEM) of pollen grains of Paris nitida G. W. Hu, Z. Wang & Q. F. Wang. (A) Whole view, showing the shape of pollen grains; (B) Equatorial view; (C) Equatorial view, showing the germinal aperture; (D) Exine ornamentation, regulate-reticulate. (Voucher specimen: Z. Wang wz-0661).
FIGURE 1. Paris nitida G.W in Paris nitida (Melanthiaceae), a new species from Hubei and Hunan, China
FIGURE 1. Paris nitida G.W.Hu, Z.Wang & Q.F.Wang. (A) The habitat in the wild; (B) A plant with young fruit; (C) Rhizome; (D) Adaxial surface of leaf blade; (E) Abaxial surface of leaf blade; (F) A plant with 4-merous flower; (G) Stamens and gynoecium in lateral view; (H) A plant with 5-merous flower; (I) Transverse section of ovary, showing parietal placentas and white ovules, scale bar = 1 mm; (J) Young fruit; (K) Red-arillate seeds.
FIGURE 2. Paris tengchongensis. A in A new species of Paris sect. Axiparis (Melanthiaceae) from Yunnan, China
FIGURE 2. Paris tengchongensis. A. habitat; B. habit; C. rhizome and roots; D. leaves (abaxial and adaxial surface); E. sepals (abaxial and adaxial surface); F. pistil; G. transverse section of ovary showing axile placentation; H. berry; I. transverse section of berry; J. petals; K. stamens; L. seeds enveloped by imperfect aril.
FIGURE 1. Paris tengchongensis. A in A new species of Paris sect. Axiparis (Melanthiaceae) from Yunnan, China
FIGURE 1. Paris tengchongensis. A. flowering plant; B. sepal; C. petal; D. stamen; E. pistil; F. transverse section of ovary showing axile placentation; G. berry; H. transverse section of berry; I. seed enveloped by imperfect aril. Illustration drawn from the holotype by Dongyan Wang.
FIGURE 2 in A New Species in Trillium subgen. Delostylium (Melanthiaceae, Parideae)
FIGURE 2. Geographic distribution of Trillium georgianum. County level distribution in one of the northernmost counties in the state of Georgia highlighted (inset), and approximate location of the sole population in Whitfield County along Swamp Creek (solid square).
FIGURE 1. A–C. Trillium georgianum. A in A New Species in Trillium subgen. Delostylium (Melanthiaceae, Parideae)
FIGURE 1. A–C. Trillium georgianum. A. Habit, showing flowering stems and single sterile leaves arising from a single rhizome; B, Vegetative, left, stem showing angles, right, leaf venation; C. Flower. Scale bar: A = 1 cm, B and C = 0.5 cm. Illustration by A. Floden.
FIGURE 4. Chamaelirium viridiflorum. A in Chamaelirium viridiflorum (Melanthiaceae), a new species from Jiangxi, China
FIGURE 4. Chamaelirium viridiflorum. A, Specimen from holotype; C, Flower; D, Leaf blade. C. shiwandashanensis. B, Specimen from isotype; E, Flower; F, Leaf blade.
FIGURE 2. Chamaelirium viridiflorum L. Wang, Z.C. Liu & W.B. Liao. A in Chamaelirium viridiflorum (Melanthiaceae), a new species from Jiangxi, China
FIGURE 2. Chamaelirium viridiflorum L. Wang, Z.C. Liu & W.B. Liao. A, Flowering plant; B, Flower; C, Infructescences; D, Styles and ovary; E, Capsule; F, Stamens; G, Tepal.
FIGURE 3. Chamaelirium viridiflorum L. Wang, Z.C. Liu & W.B. Liao. A & B in Chamaelirium viridiflorum (Melanthiaceae), a new species from Jiangxi, China
FIGURE 3. Chamaelirium viridiflorum L. Wang, Z.C. Liu & W.B. Liao. A & B, Habit; C & D, Blade; E & H, Spike; F, Flower, lateral view; G, Pistil and stamen; I, Capsule.
FIGURE 4 in Paris lihengiana (Melanthiaceae: Parideae), a new species from Yunnan, China
FIGURE 4. Bayesian tree based on plastid DNA data. Bootstrap value (BS) for maximum likelihood (ML) analyses and posterior probability (PP) from Bayesian analysis are shown (BS /PP ). Dashes indicate BS <50 or PP <0.50.
FIGURE 2 in Paris lihengiana (Melanthiaceae: Parideae), a new species from Yunnan, China
FIGURE 2. Paris lihengiana. (A) Habit. (B) Stem, pedicel and abaxial leaf surface (showing pubescence). (C) Leaf adaxial surface. (D) Rhizome. (E–H) Flower. (I) Ovary (cross section). Photographs taken by Guangwan Hu.
FIGURE 1 in Paris lihengiana (Melanthiaceae: Parideae), a new species from Yunnan, China
FIGURE 1. Paris lihengiana. (A) Rhizome and stem. (B) Leaves. (C) Flower. (D) Stamen. (E) Pistil. (F) Ovary (cross section). Drawing by Ling Wang.
FIGURE 3 in Paris lihengiana (Melanthiaceae: Parideae), a new species from Yunnan, China
FIGURE 3. Bayesian tree based on nuclear ribosomal ITS. Bootstrap value (BS) for maximum likelihood (ML) analyses and posterior probability (PP) for Bayesian analysis are shown (BSML/PPBI). Dashes indicate BSML<50 or PPBI<0.50.
FIGURE 1. Paris birmanica. A.–B. Habit. C. Rhizome and roots. D in Rediscovery and supplemental description of Paris birmanica (Melanthiaceae), a species endemic to Myanmar
FIGURE 1. Paris birmanica. A.–B. Habit. C. Rhizome and roots. D. Leaves, abaxial and adaxial surface. E. Flower with five green petals and stamens in three whorls. F. Flower showing the feature of every stamen whorl with the free portion of the connective of unequal length decreasing inwardly. G. Stylar base purple with five free, dark yellow, revolute stigmas. H. Transverse section of ovary showing parietal placenta and white ovules.
FIGURE 32 in Taxonomy, evolution and phylogeography of the genus Helonias (Melanthiaceae) revisited
FIGURE 32. Geographic ranges of Sect. Heloniopsis in Asia with presumable approximate course of range extension in past. A–D: Presumable approximate course of migration or extension of range of ancestral plants of Helonias. Ancestral plants are supposed to have arrived in or around present Tibetan Plateau from northern high latitudes (A; see also Fig. 31) and have further extended their range eastward (B, C) and northeastward (D).
FIGURE 33 in Taxonomy, evolution and phylogeography of the genus Helonias (Melanthiaceae) revisited
FIGURE 33. Flowchart illustrating presumable approximate course of migration of ancestral population of Helonias (cf. Figs. 31 & 32). A. Southward migration from northern high latitudes, which resulted in large-scale disjunction in distribution. B, C. Eastward extension of range. D. Northeastward extension of range.
FIGURE 31 in Taxonomy, evolution and phylogeography of the genus Helonias (Melanthiaceae) revisited
FIGURE 31. Geographic ranges of two sections Helonias and Heloniopsis. Ancestral plants of Helonias are presumed to have been in northern high latitudes approximate area of which is encircled with broken line. They are supposed to have been separated into two groups, and eventually one group reached eastern N. America and the other eastern Asia as consequence of their southward migrations (A). ① Sect. Helonias. ②–④ Sect. Heloniopsis. ② Subsect. Ypsilandra. ③ Subsect. Heloniopsis ser. Umbellatae. ④ Subsect. Heloniopsis ser. Heloniopsis. For historical aspect of range extension, see also Figs. 32, 33 and text (Part III).
FIGURE 28. Helonias breviscapa. A in Taxonomy, evolution and phylogeography of the genus Helonias (Melanthiaceae) revisited
FIGURE 28. Helonias breviscapa. A. Flower (material Br-5). B, C. Vertical section of flower (B; Br-5. C; Br-3). Surface of nectary arrowed. D. Proximal exterior of flower, side view (Br-1). E. Flower with pistil removed, front view (Br-2). Two connate portions between submarginal lamellae of adjoining tepals arrowed. F. Bilocular anthers with no apical confluence between thecae arrowed (Br-2). IF: inner filament. OF: outer filament.
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.