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4,462 results for “South America”
FIGURE 7. A–I. Bulbostylis wanderleyana Prata & M.G in New species of Bulbostylis (Cyperaceae) from South America
FIGURE 7. A–I. Bulbostylis wanderleyana Prata & M.G.López. A. Habit. B. Detail of Inflorescence. C. Spikelet. D. Flower. E. Leaf Sheath. F. Scale, ventral and dorsal view. G. Achene. (Prata et al. 859, ASE).
FIGURE 5. A–G. Bulbostylis minensis Prata & M.G in New species of Bulbostylis (Cyperaceae) from South America
FIGURE 5. A–G. Bulbostylis minensis Prata & M.G.López. A. Habit. B. Inflorescence. C. Spikelet. D. Flower. E Sheath with portion of leaf. F. Scale, ventral and dorsal view. G. Achene. (Prata et al. 1157, SP).
FIGURE 2 in New species of Bulbostylis (Cyperaceae) from South America
FIGURE 2. Scanning electron microscope photographs of achenes of Bulbostylis. A–B. B. junciformis (Kunth) C.B. Clarke. A. Achene. B. Achene surface detail. C–D. B. amazonica Prata & M.G.López (K. Kubitzki et al. 79–120, MG). C. Achene. D. Achene surface detail (W. Mantovani 47, SP).
FIGURE 6 in New species of Bulbostylis (Cyperaceae) from South America
FIGURE 6. Scanning electron microscope photographs of achenes of Bulbostylis. A–B. B. minensis Prata & M.G.López. A. Achene B. Achene surface detail. (Lombardi 1028, BHCB).
FIGURE 1. A–G. Bulbostylis amazonica Prata & M.G in New species of Bulbostylis (Cyperaceae) from South America
FIGURE 1. A–G. Bulbostylis amazonica Prata & M.G.López. A. Habit. B. Inflorescence. C. Spikelet. D. Flower. E. Sheath with portion of leaf. F. Scale, dorsal and ventral view. G. Achene (K. Kubitzki et al. 79–120, MG).
FIGURE 3. A–G. Bulbostylis decidua Prata & M.G in New species of Bulbostylis (Cyperaceae) from South America
FIGURE 3. A–G. Bulbostylis decidua Prata & M.G. López. A. Habit. B. Sheath Leaf. C. Inflorescence detail. D–E. Scale, D. Dorsal view. E. Lateral view F–G. Achene. (R. Amado 260, EAC).
FIGURE 4 in New species of Bulbostylis (Cyperaceae) from South America
FIGURE 4. Scanning electron microscope photographs of achenes of Bulbostylis. A–B. B. decidua Prata & M.G.López. A. Achene B. Achene surface detail. C–D. B. emmerichiae T.Koyama (R.C. Mendonça & D. Alvarenga 625, IBGE). C. Achene D. Achene surface detail. E–F. B. sellowiana (Kunth) Palla (Hassler 9429, G) E. Achene. F. Achene surface detail. (R. Amado 260, EAC).
FIGURE 1. Mecardonia reneeae. A in A new polyploid species of Mecardonia (Gratioleae, Plantaginaceae) from South America
FIGURE 1. Mecardonia reneeae. A: Habit. B: Stem. C: Detail of the leaf. D: Flower in lateral view. E: Calyx. F: Dissected corolla. G: Anterior anther. H: Posterior anther. I: Gynoecium. J: Fruit (A-C: from Greppi & Hagiwara 560, BAB; illustrated by M. Marino; B–J: from Schinini 11601, CTES; illustrated by Mirtha L. Gómez).
FIGURE 2. A, C in A new polyploid species of Mecardonia (Gratioleae, Plantaginaceae) from South America
FIGURE 2. A, C: Mecardonia procumbens var. flagellaris. A. Habit, C. Metaphase image showing 22 chromosomes. B, D. M. reneeae. B. Habit. D. Metaphase image showing 44 chromosomes.
FIGURE 5. Chusquea ramosissima. A in Chusquea sect. Tenellae (Bambuseae, Bambusoideae, Poaceae), a taxonomic revision of a new section from South America
FIGURE 5. Chusquea ramosissima. A. Persistent culm leaf sheath in place, B. Apical portion of a new shoot showing culm leaves and infravaginal branching, C. Branch complement with a central branch, and two robust and several smaller subsidiary branches, D. Bud complement, E. Synflorescence, F. Spikelet, G. Ligular region of a foliage leaf, H. Ligular region of a culm leaf, adaxial view. Illustration by Sue Aldworth; A is based on Medina 12, B, D and G are based on Soderstrom & Sucre 1986, C is based on Klein 7796, E and F are based on Pederson 6515, and H is based on Lindman A.1239.
FIGURE 6. Chusquea tenella and C. tenuiglumis. C in Chusquea sect. Tenellae (Bambuseae, Bambusoideae, Poaceae), a taxonomic revision of a new section from South America
FIGURE 6. Chusquea tenella and C. tenuiglumis. C. tenella: A. Branch complement with developing central branch, B. Synflorescences on a leafy subsidiary branch, C. Spikelet, D. Culm leaf in place, E. Ligular region of a foliage leaf. C. tenuiglumis: F. Synflorescences on a leaf subsidiary branch, G. Spikelet, H. Bud complement. Illustration by Ella Wichers; A is based on Clark & Windisch 725, B and C are based on Rambo 41560, D and E are based on Clark & Windisch 874, F and G are based on Regnell III 1426, and H is based on Clark & Morel 707.
FIGURE 4. Chusquea ovatifolia. A. Habit, B in Chusquea sect. Tenellae (Bambuseae, Bambusoideae, Poaceae), a taxonomic revision of a new section from South America
FIGURE 4. Chusquea ovatifolia. A. Habit, B. Close-up of leafy subsidiary branches, C. Bud complement, D. Synflorescences and spikelets. A, B, and D were taken by A. Fuentes and C by L. Clark. C is based on Fuentes et al. 9662 and D is based on Fuentes et al. 14877.
FIGURE 3. Chusquea fasciculata. A in Chusquea sect. Tenellae (Bambuseae, Bambusoideae, Poaceae), a taxonomic revision of a new section from South America
FIGURE 3. Chusquea fasciculata. A. Portion of flowering stem, B. Close-up of spikelets. A and B were taken by P. Klahs based on Regnell III 1427, lectotype sheet (MB).
FIGURES 10–18 in A new marine alga, Pterocladiella andresii sp. nov. (Gelidiales, Rhodophyta) and its relationship to P. caloglossoides from Pacific South America
FIGURES 10–18. Pterocladiella caloglossoides (Howe) Santelices. 10. Plants attached to articulated coralline alga (CNU024786). Scale bar = 2 mm. 11. Habit of plant showing irregular branching (CNU024786). Scale bar = 1 mm. 12. Irregularly arranged outermost cortical cells in center of erect axes. Scale bar = 10 μm. 13. Transverse section of erect branch showing outermost cortical cells (oc), inner cortical cells (ic), rhizines (rz) and medullary cells (mc). Scale bar = 20 μm. 14. Tetrasporangial sorus on spatulate branch with v-shaped arrangement of tetrasporangia (CNU024786). Scale bar = 100 μm. 15. Transverse section of tetrasporangial sorus showing tetrasporangia (arrowheads). Scale bar = 20 μm. 16. Habit of female plant with cystocarps (arrowhead) (CNU024818). Scale bar = 1 mm. 17. Side view of cystocarp showing swelling on both sides (arrowhead). Scale bar = 0.5 mm. 18. Transverse section of mature cystocarp showing carpospores (arrowheads). Scale bar = 20 μm.
FIGURE 19 in A new marine alga, Pterocladiella andresii sp. nov. (Gelidiales, Rhodophyta) and its relationship to P. caloglossoides from Pacific South America
FIGURE 19. Maximum likelihood tree of concatenated (rbcL + cox1) dataset from Pterocladiella. The numbers above or below the nodes are RAxML bootstrap values and Bayesian posterior probabilities. Only bootstrap values ≥50% and Bayesian posterior probabilities ≥90 are shown in the tree.
FIGURES 1–9. Pterocladiella andresii G.H. Boo, M.S. Calderon & S.M in A new marine alga, Pterocladiella andresii sp. nov. (Gelidiales, Rhodophyta) and its relationship to P. caloglossoides from Pacific South America
FIGURES 1–9. Pterocladiella andresii G.H. Boo, M.S. Calderon & S.M. Boo, sp. nov. 1. Habit of a holotype specimen (CNU012838). Scale bar = 2 mm. 2. Habit of isotype specimen (CNU012838-1). Scale bar = 2 mm. 3. Habit of isotype specimen (CNU012838-2). Scale bar = 2 mm. 4. Apex of young branch showing apical cell (arrowhead) and surface cells arranged in arcuate pattern. Scale bar = 20 μm. 5. Irregularly arranged outermost cortical cells in surface view in center part. Scale bar = 20 μm. 6. Transverse section of erect branch showing outermost cortical cells (oc), inner cortical cells (ic), rhizines (rz) and medullary cells (mc). Scale bar = 20 μm. 7. Tetrasporangial sorus with irregularly arranged tetrasporangia (CNU012838-3). Scale bar = 100 μm. 8. Young tetrasporangial sorus with v-shaped tetrasporangial arrangement (CNU012838-3). Scale bar = 200 μm. 9. Transverse section of tetrasporangial sorus showing tetrasporangia (arrowheads). Scale bar = 50 μm.
FIGURES 29–32 in Haslea crucigeroides var. australis, var. nov. (Bacillariophyta), a new marine diatom from southern South America and Antarctica
FIGURES 29–32. SEM images of Haslea crucigeroides var. australis, var. nov. 29. Internal view of a valve centre showing the pseudostauros, the short ridge on a side of the central nodule and the long ridge on the other side. 30. Detail of valve apex in internal view. Note the long ridge covering the raphe until reaching the helictoglossa. 31. Broken valve revealing its two-layer sandwich-type structure; note also its domed shape. 32. Detail of the tegumental and basal layers of the valve (upper and lower side, respectively) joined to each other by saepes (arrow). Basal layer seen on the left of the picture (arrow). Scale bar = 2 μm (Figs 29–31), 0.5 μm (Fig. 32).
FIGURES 22–28 in Haslea crucigeroides var. australis, var. nov. (Bacillariophyta), a new marine diatom from southern South America and Antarctica
FIGURES 22–28. SEM images of Haslea crucigeroides var. australis, var. nov. 22. Part of a frustule in girdle view. Note the external tegumental layer with continuous longitudinal fissures, except on the valve margin (white arrows). The cingulum presents the valvocopula and a copula (black arrows). 23. Valve in external view showing continuous longitudinal fissures, raphe sternum and small central area with the raphe fissures. 24, 25. Apices of the same valve showing the terminal raphe fissures strongly deflected to the same side. 26. Entire valve in internal view. 27. Details of the transverse and longitudinal striae in internal view. Note the rectangular areolar foramina at the valve margin. 28. Detail of the foramina occluded internally by hymenes. Scale bar = 10 μm (Figs 22, 26), 2 μm (Figs 23–25, 27, 28).
FIGURES 5–18 in Haslea crucigeroides var. australis, var. nov. (Bacillariophyta), a new marine diatom from southern South America and Antarctica
FIGURES 5–18. LM images of different valves of Haslea crucigeroides var. australis, var. nov. ordered from lowest to highest length of their apical axis, exemplifying different shapes and sizes. 5. Holotype. Black scale bar = 20 μm. FIGURES 19–21. LM images of the holotype specimen of Haslea crucigeroides (Hustedt) Simonsen. White scale bar = 10 μm (Figs 19, 21). Black scale bar = 20 μm (Fig. 20)
FIGURE 1 in Haslea crucigeroides var. australis, var. nov. (Bacillariophyta), a new marine diatom from southern South America and Antarctica
FIGURE 1. Maps showing the study area and the three sampling stations (BD, BE, BF) in Almirante Brown Bay, Beagle Channel, Tierra del Fuego, Argentina.
ScienceDex guides
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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.