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4,287 results for “Asteraceae”
What the heart wants: adaptive significance of cordate leaf morphology in Arnica (Asteraceae)
We studied how the leaf inclination of basal leaves of two species, heartleaf arnica (Arnica cordifolia Hook.) and broadleaf arnica (Arnica latifolia Bong.) varied with canopy cover in the Greater Yellowstone Ecosystem, Wyoming, USA in July and August, 2022. Basal leaves of heartleaf arnica possess cordate leaf bases while those of broadleaf arnica do not, leading to potential biomechanical limitations of the latter to persist in shaded forest understories. Leaf inclination was measured as the angle (degrees) between the petiole and leaf planes of basal leaves for each species; cordateness was measured as the ratio of leaf length on either side of the petiole insertion point in basal leaves of heartleaf arnica. Data collection are complete.
Demographic measures of Liatris ohlingerae (Asteraceae) in 20 populations across multiple habitats and time-since-fire intervals in south central Florida from 1997-2017
Demographic data were collected on 2,858 tagged individually marked plants annually from 1997 to 2017 in 20 populations across three sites on the southern end of the Lake Wales Ridge in south central Florida, USA. Our goal was to understand demographic responses including recruitment, survival, reproduction and mortality of individuals across populations, habitat types and fire-return-intervals. Habitats include rosemary scrub, scrubby flatwoods and human created sandy roadsides. Populations spanned three sites including Archbold Biological Station (18 populations), Florida Forest Service Arbuckle Tract of the Lake Wales Ridge State Forest (1 population), and Florida Fish and Wildlife Conservation Commission Gould Road property (1 population). Annual demographic measures include survival (including plant dormancy), stage, measures of size, reproductive effort and herbivory. Plots were surveyed annually during flowering in August for previously marked plants and searched for newly recruited putative seedlings or previously missed larger adults. This landscape is managed with periodic prescribed fire impacting some populations with additional post-burn censuses completed after the burn. In addition, damage following three hurricanes in 2004 were recorded. Plants were followed through their lifecycle and after four years of no aboveground growth, plants were assumed dead and tags removed from the field.
FIG. 6 in Structural and histochemical characterization of the osmophores in corollas of Asteraceae (tribes Onoserideae and Famatinantheae)
FIG. 6. — Non-osmophoric papillae in genera of Onoserideae: A, sinus between two lobes of the central corolla in Aphyllocladus denticulatus Hieron., showing papillae with negative reaction for starch test (IKI); B, two lobes of the central corolla in Gypothamnium pinifolium Phil., with apical and marginal papillae, several of them secreting drops (arrow) and negatively reacting for starch test (IKI); C, lobe of the central corolla in Lycoseris trinervis (D. Don) S.F. Blake, note the papillae with lipophilic content (ORO); D, tooth margin of the marginal corolla in Onoseris hastata Wedd., note the papillae with lipophilic content (ORO); E, lobe apex of the central corolla in Urmenetea atacamensis Phil., note the short, rounded papillae with striate cuticle (NR). A, Ricardi 3674 (LP); B, Roig Juñent 22 (LP); C, Sagástegui 6867 (LP); D, Fabris 6157 (LP); E, Cabrera et al. 22543 (LP). Scale bars: A, 100 µm; B, 250 µm; C-E, 50 µm.
FIG. 4 in Structural and histochemical characterization of the osmophores in corollas of Asteraceae (tribes Onoserideae and Famatinantheae)
FIG. 4. — Osmophoric glands in Famatinanthus and Plazia: A, B, Famatinanthus decussatus (Hieron.) Ariza & S.E. Freire; A, central corolla showing osmophores at the apex of the lobes (stereomicroscopic image); B, apex of one lobe of the central corolla showing the reddish osmophore (Safranin); C, D, Plazia daphnoides Wedd.; C, apex of the 3-dentate outer lip of the marginal corolla showing the osmophores with a strong positive reaction for NR (stereomicroscopic image); D, apex of one lobe of the central corolla showing the osmophore (Safranin); E, longitudinal section of one lobe of the central corolla of Famatinanthus decussatus, showing the apical gland and the tissues (Safranin-Fast Green); F-H, Plazia daphnoides; F, longitudinal section of one lobe of the central corolla, showing part of the apical gland, note the vascular tissue mainly constituted by xylem vessels and some phloem elements (arrow) (Nile blue); G, transection at the apex of the outer lip of the marginal corolla, note the three osmophoric glands protruding on the surface (Safranin- Astra Blue); H, longitudinal section of one lobe apex of the central corolla, showing the vascular tissue of the osmophoric gland (Safranin); I, J, Famatinanthus decussatus; I, transection of the osmophoric gland, note the reddish color of the papillae and the parenchyma showing the secretory function of both tissues (TIOFH3); J, detail of the previous figure (TIOFH3), note the red content of the cells and the vascular tissue.Abbreviations: OS, osmophore; PP, papillose epidermis; SP, secreting parenchyma; VT, vascular tissue. A, B, E, I, J, Funk & Bonifacino 13233 (LP); C, G, Ruthsatz s.n. (LP s.n.); D, Cabrera 8331 (LP); F, H, Rauh P423 (LP). Scale bars: A, C, 500 µm; B, E, I, J, 120 µm; D, 0.25 mm; F, 50 µm; G, 250 µm; H, 110 µm; J, 60 µm.
FIG. 2 in Structural and histochemical characterization of the osmophores in corollas of Asteraceae (tribes Onoserideae and Famatinantheae)
FIG. 2. — Diagrams showing the location of osmophores and non-osmophoric papillae in marginal, bilabiate corollas (A, C, E, G, I, K, M, P), in the central tubular corollas (B, D, F, H, J, L, N, Q), and in all tubular corollas (O) (only two of the five lobes are shown) of Famatinantheae and selected Onoserideae: A-D, osmophores; A, B, Famatinanthus decussatus (Hieron.) Ariza & S.E. Freire; C, D, Plazia daphnoides Wedd.; E-Q, non-osmophoric papillae; E, F, Aphyllocladus spartioides Wedd.; G, H, Gypothamnium pinifolium Phil.; I, J, Lycoseris trinervis (D. Don) S.F. Blake; K, L, Onoseris gnaphalioides Muschl.; M, N, Onoseris drakeana André; O, Onoseris onoseroides (Kunth) B.L. Robinson; P, Q, Urmenetea atacamensis Phil. Dotted line, area of corolla incision; Red, osmophores; blue, starch; yellow, non-osmophoric papillae.
FIG. 5 in Structural and histochemical characterization of the osmophores in corollas of Asteraceae (tribes Onoserideae and Famatinantheae)
FIG. 5. — Osmophore elements in Famatinanthus and Plazia: A, two teeth of the marginal corolla showing the venation in Plazia daphnoides Wedd., note the two veins at each tooth margin joining at the apex (Safranin); B, sinus between the outer and the inner lips of the marginal corolla in Famatinanthus decussatus (Hieron.) Ariza & S.E. Freire showing starch grains (IKI);C, D, Plazia daphnoides; C, transection of the marginal corolla showing stomata with large substomatal chambers (Safranin-Astra Blue); D, abaxial surface view of one sinus of the central corolla, showing numerous stomata (arrows) near the osmophoric area (Safranin); E, apex of one lobe of the central corolla in Famatinanthus decusssatus, showing one large stomata and a cluster of starch grains below (TIOFH3); F, G, Plazia daphnoides; F, detail of one corolla stoma at the sinus area (Safranin); G, detail of one corolla stoma showing starch content as dark dots (IKI).Abbreviations:SM, starch mass;ST, stomata;VE, vein.A, D, F, Ruthsatz s.n. (LP s.n.); B, E, Funk & Bonifacino 13233 (LP); C, Rauh P423 (LP);G, Zöllner 4902 (LP). Scale bars: A, 750 µm; B, 150 µm; C, E, 125 µm; D, 200 µm; F, 23 µm; G, 50 µm.
FIG. 1 in Structural and histochemical characterization of the osmophores in corollas of Asteraceae (tribes Onoserideae and Famatinantheae)
FIG. 1. — Corolla parts mentioned in this contribution: A, opened bilabiate, marginal, corolla; B, opened, tubular, central corolla.
FIG. 3 in Structural and histochemical characterization of the osmophores in corollas of Asteraceae (tribes Onoserideae and Famatinantheae)
FIG. 3. — Osmophoric epidermis in Famatinanthus and Plazia: A, sinus between the outer and inner lips of the marginal corolla of Famatinanthus decussatus (Hieron.) Ariza & S.E. Freire, note the strong positive reaction for NR; B-F, Plazia daphnoides Wedd.; B, sinus between two lobes of the central corolla showing numerous stomata (arrows) (TIOFH3); C, sinus between two lobes of the central corolla showing the reddish cluster of osmophoric papillae (ORO); D, abaxial view of one tooth of the marginal corolla showing the osmophore and two stomata (Safranin); E, papilla in the margin of one lobe of the central corolla, note the reddish secreting drop under the cuticle (ORO); F, papillae in the margin of a central corolla lobe, showing starch content as dark dots (IKI); G, lobe margin in the central corolla of Famatinanthus decussatus (Hieron.) Ariza & S.E. Freire, showing a cluster of starch grains below the epidermis (TIOFH3); H, I, Plazia daphnoides Wedd.; H, papillae at the lobe apex of the central corolla, note the lipophilic content (ORO); I, papillae at the lobe margin of the central corolla, note the thick cell wall and the striate cuticle (ORO). Abbreviations: OS, osmophore; SM, starch mass; ST, stoma. A, G, Funk & Bonifacino 13233 (LP); B, Ruthsatz s.n. (LP s.n.); C, Hunziker & Caso 6154 (LP); D, Cabrera 8331 (LP); E, I, Rauh P423 (LP); F, H, Zöllner 4902 (LP). Scale bars: A, 150 µm; B, F, G, 100 µm; C, E, H, I, 50 µm; D, 380 µm.
Fig 1 in Hieracium attenboroughianum (Asteraceae), a new species of hawkweed
<p>Figure 1 Hieracium attenboroughianum. (A) Whole plant. (B-F) Basal rosette leaves from outer (B) to inner (F). (G-H) Stem leaves. (I) Capitulum. (J) Involucral bract. Scale bars=1 cm.</p>
Fig 3 in Hieracium attenboroughianum (Asteraceae), a new species of hawkweed
<p>Figure 3 Pictures of Hieracium attenboroughianum. (a) Locality on NW side of Cribyn. (b) Habitat on Old Red Sandstone mountain rocks. (c) Plant. (d) Capitulum.</p>
Individual multilocus genotypes from four populations of Helichrysum arenarium (Asteraceae) from Belgium and Germany
<p>Individual multilocus genotypes based on 11 microsatellites loci from four populations of <em>Helichrysum arenarium</em> (Asteraceae) from Belgium and Germany. For more details, see Van Rossum et al. 2024 "Genetic diversity assessment of <em>Helichrysum arenarium</em> (Asteraceae) for the genetic restoration of declining populations" in Ecology and Evolution</p>
Figs 19–26. Terellia ermolenkoi Korneyev, 1985 in A second species of the genus Urophora (Diptera: Tephritidae) attacking capitula of the genus Psephellus (Asteraceae)
Figs 19–26. Terellia ermolenkoi Korneyev, 1985, females (19, 20, 22, 25, 26) and males (20, 21, 23, 24). 19, female habitus (in lateral view); 20, male wing; 21, glans of phallus; 22, female abdomen (in dorsal view); 23, 24, male thorax (in dorsal view); 25, aculeus; 26, apex of aculeus.
Figs 10–18 in A second species of the genus Urophora (Diptera: Tephritidae) attacking capitula of the genus Psephellus (Asteraceae)
Figs 10–18. Urophora aprica (Fallén, 1820) from European Russia (Ulyanovsk Province; reared from Centaurea cyanus), females (10, 12, 15–18) and males (11, 13, 14). 10, female habitus (in lateral view); 11, male habitus (in lateral view); 12, female abdomen (in dorsal view); 13, male wing; 14, glans of phallus; 15, aculeus; 16, distal part of aculeus; 17, 18, apex of aculeus.
Figs 1–9 in A second species of the genus Urophora (Diptera: Tephritidae) attacking capitula of the genus Psephellus (Asteraceae)
Figs 1–9. Urophora sevanensis sp. nov., paratypes (1–8) and holotype (9). 1, male habitus (in lateral view); 2, female habitus (in lateral view); 3, male wing; 4, female wing; 5, aculeus; 6, apex of aculeus; 7, female thorax (in dorsal view); 8, glans of phallus; 9, female abdomen (in dorsal view).
Silphium laciniatum (Asteraceae) - inflorescence - whole - unspecified
Image of Silphium laciniatum (Asteraceae) - inflorescence - whole - unspecified
Ratibida pinnata (Asteraceae) - inflorescence - whole - unspecified
Image of Ratibida pinnata (Asteraceae) - inflorescence - whole - unspecified
Silphium perfoliatum (Asteraceae) - inflorescence - whole - unspecified
Image of Silphium perfoliatum (Asteraceae) - inflorescence - whole - unspecified
Silphium terebinthinaceum var. pinnatifidum (Asteraceae) - whole plant - in flower - general view
Image of Silphium terebinthinaceum var. pinnatifidum (Asteraceae) - whole plant - in flower - general view
Silphium terebinthinaceum var. pinnatifidum (Asteraceae) - inflorescence - ventral view of flower + perianth
Image of Silphium terebinthinaceum var. pinnatifidum (Asteraceae) - inflorescence - ventral view of flower + perianth
Silphium terebinthinaceum var. pinnatifidum (Asteraceae) - inflorescence - whole - unspecified
Image of Silphium terebinthinaceum var. pinnatifidum (Asteraceae) - inflorescence - whole - unspecified
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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.