1,721,033 research outputs found
FIGURE 5. Leucoagaricus gongylophorus F.T.F. 192. A. Basidiospores. B. Basidia. Scale bars are 10 in Taxonomic and nomenclatural novelties in Leucoagaricus (Agaricaceae) from Brazil
No full textFIGURE 5. Leucoagaricus gongylophorus F.T.F. 192. A. Basidiospores. B. Basidia. Scale bars are 10 µm. Illustration by C. Heisecke.Published as part of Heisecke, Celeste, Barbosa, Jaime Andrés Duque, Neves, Maria Alice & Jr, Anibal Alves De Carvalho, 2021, Taxonomic and nomenclatural novelties in Leucoagaricus (Agaricaceae) from Brazil, pp. 42-58 in Phytotaxa 494 (1) on page 52, DOI: 10.11646/phytotaxa.494.1.2, http://zenodo.org/record/575629
FIGURE 4. Leucoagaricus gongylophorus C.H.C. 463 in Taxonomic and nomenclatural novelties in Leucoagaricus (Agaricaceae) from Brazil
No full textFIGURE 4. Leucoagaricus gongylophorus C.H.C. 463 (Epitype). A. Basidiospores. B. Basidia. C. Cheilocystidia. D. Pileus covering. Scale bars are 10 µm for A–C and 20 µm for D. Illustration by C. Heisecke.Published as part of Heisecke, Celeste, Barbosa, Jaime Andrés Duque, Neves, Maria Alice & Jr, Anibal Alves De Carvalho, 2021, Taxonomic and nomenclatural novelties in Leucoagaricus (Agaricaceae) from Brazil, pp. 42-58 in Phytotaxa 494 (1) on page 50, DOI: 10.11646/phytotaxa.494.1.2, http://zenodo.org/record/575629
FIGURE 6. Leucoagaricus nzumbae C.H.C.349 in Taxonomic and nomenclatural novelties in Leucoagaricus (Agaricaceae) from Brazil
No full textFIGURE 6. Leucoagaricus nzumbae C.H.C.349 (Holotype). A. Basidiospores. B. Basidia. C. Elements of the pileus covering. Scale bars are 10 µm. Illustration by C. Heisecke.Published as part of Heisecke, Celeste, Barbosa, Jaime Andrés Duque, Neves, Maria Alice & Jr, Anibal Alves De Carvalho, 2021, Taxonomic and nomenclatural novelties in Leucoagaricus (Agaricaceae) from Brazil, pp. 42-58 in Phytotaxa 494 (1) on page 53, DOI: 10.11646/phytotaxa.494.1.2, http://zenodo.org/record/575629
Studies in Hygrocybe s.l. (Hygrocyboideae, Hygrophoraceae) in Brazil: New species of Humidicutis and Neohygrocybe
No full textCardoso, Juli Simon, Moncalvo, Jean-Marc, Lodge, D. Jean, Margaritescu, Simona, Neves, Maria Alice, Oliveira, Jadson J. S. (2023): Studies in Hygrocybe s.l. (Hygrocyboideae, Hygrophoraceae) in Brazil: New species of Humidicutis and Neohygrocybe. Phytotaxa 607 (1): 57-71, DOI: 10.11646/phytotaxa.607.1.5, URL: http://dx.doi.org/10.11646/phytotaxa.607.1.
Scleroderma meridionale ectomycorrhizae on Halimium halimifolium: expanding the Mediterranean symbiotic repertoire
Full text linkScleroderma is a gasteroid genus in the Boletales (Basidiomycota), with a cosmopolitan distribution. Species of Scleroderma establish ectomycorrhizal (ECM) symbiosis with a range of coniferous and non-coniferous trees and shrubs, both in temperate and tropical regions, with little tendency to host specificity, a feature that might have facilitated the wide distribution of the genus. With the contribution of confocal laser scanning microscopy, we describe the morpho-anatomical features of the ectomycorrhizae formed by Scleroderma meridionale on Halimium halimifolium, a cistaceous plant belonging to a small group of woody shrubs occurring in open vegetation types in the Mediterranean region. The mycobiont and host plant identity in ECM was verified through molecular tools. Mycorrhizal system is very small, up to 1.9 mm, mostly coralloid to irregularly pinnate. The mantle surface is felty, whitish with silver patches. Differentiated rhizomorphs occur infrequently. Mantle surface is characterized by a network of branched hyphae organized in hyphal boundles. Hyphae are frequently covered by granules or warts. These characters, except for the presence of granules, are similar to those reported for the only two naturally-occurring Scleroderma ECM described so far, i.e. S. bovista on Populus and S. citrinum on Betula and Pinus. On the other side, the peculiarity of S. meridionale + Halimium ECM is the particularly small dimension of mycorrhizal system, a character shared with ECM formed by Cistaceae. At the best of our knowledge, this is the first description of an ectomycorrhiza on Halimium, a plant whose mycorrhizal biology deserves to be explored in greater detail
FIGURE 5 in Studies in Hygrocybe s.l. (Hygrocyboideae, Hygrophoraceae) in Brazil: New species of Humidicutis and Neohygrocybe
No full textFIGURE 5. Detail of the lamellar trama showing the pseudocystidia emerging from the hymenium of N. fumosa (JS600). Scale = 50µm. Photo by: J. S. CardosoPublished as part of Cardoso, Juli Simon, Moncalvo, Jean-Marc, Lodge, D. Jean, Margaritescu, Simona, Neves, Maria Alice & Oliveira, Jadson J. S., 2023, Studies in Hygrocybe s.l. (Hygrocyboideae, Hygrophoraceae) in Brazil: New species of Humidicutis and Neohygrocybe, pp. 57-71 in Phytotaxa 607 (1) on page 66, DOI: 10.11646/phytotaxa.607.1.5, http://zenodo.org/record/821221
FIGURE 2 in Taxonomic and nomenclatural novelties in Leucoagaricus (Agaricaceae) from Brazil
No full textFIGURE 2. Lectotype of Leucoagaricus gongylophorus. Tab. V, from Möller 1893. Fig. 1–6. Cross-sections through various old fruiting bodies of the agaricines cultivated by the Atta species (Rozites gongylophorus). 1–5 natural size.; 6 slightly reduced in size. Fig. 7. Basidia of the same fungus, with fallen, just laid and a ripe spore still attached. Magnification 1: 500. Fig. 8. Three germinated spores of the same fungus. Magnification 1: 500. Fig. 9. Those on the mushroom garden of the Atta species after removal of the "Strong" conidia form appearing in ants. Magnification 1: 220. Fig. 10. Smaller piece of mycelium with the same not yet fully developed Conidia carriers. Magnification 1: 300. Fig. 11. Those in the mushroom garden of the Atta species, after removal of the "weak" conidia form with the "Pearl threads". Magnification 1: 220. Fig. 12. The "strand swellings" occurring there. Magnification 1: 220.Published as part of Heisecke, Celeste, Barbosa, Jaime Andrés Duque, Neves, Maria Alice & Jr, Anibal Alves De Carvalho, 2021, Taxonomic and nomenclatural novelties in Leucoagaricus (Agaricaceae) from Brazil, pp. 42-58 in Phytotaxa 494 (1) on page 48, DOI: 10.11646/phytotaxa.494.1.2, http://zenodo.org/record/575629
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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