1,720,965 research outputs found
Volvariella variicystidiosa sp. nov. (Agaricaceae, Basidiomycota) from Punjab, Pakistan
No full textHaqnawaz, Muhammad, Khan, Zaman, Niazi, Abdul Rehman, Khalid, Abdul Nasir (2023): Volvariella variicystidiosa sp. nov. (Agaricaceae, Basidiomycota) from Punjab, Pakistan. Phytotaxa 578 (2): 189-198, DOI: 10.11646/phytotaxa.578.2.5, URL: http://dx.doi.org/10.11646/phytotaxa.578.2.
Lepiota sindhudeltana sp. nov. (Agaricaceae; Basidiomycota) from Punjab, Pakistan
No full textHaqnawaz, Muhammad, Niazi, Abdul Rehman, Usman, Muhammad, Khalid, Abdul Nasir (2022): Lepiota sindhudeltana sp. nov. (Agaricaceae; Basidiomycota) from Punjab, Pakistan. Phytotaxa 550 (3): 253-262, DOI: 10.11646/phytotaxa.550.3.
FIGURE 3 in Lepiota sindhudeltana sp. nov. (Agaricaceae; Basidiomycota) from Punjab, Pakistan
No full textFIGURE 3. Molecular phylogenetic placement of Lepiota sindhudeltana based on Maximum Likelihood (ML) method of ITS sequences. The new species is in bold.Published as part of Haqnawaz, Muhammad, Niazi, Abdul Rehman, Usman, Muhammad & Khalid, Abdul Nasir, 2022, Lepiota sindhudeltana sp. nov. (Agaricaceae; Basidiomycota) from Punjab, Pakistan, pp. 253-262 in Phytotaxa 550 (3) on page 259, DOI: 10.11646/phytotaxa.550.3.5, http://zenodo.org/record/665103
FIGURE 3 in Volvariella variicystidiosa sp. nov. (Agaricaceae, Basidiomycota) from Punjab, Pakistan
No full textFIGURE 3. Molecular phylogenetic placement of Volvariella variicystidiosa based on Maximum Likelihood (ML) method of ITS sequences.Published as part of Haqnawaz, Muhammad, Khan, Zaman, Niazi, Abdul Rehman & Khalid, Abdul Nasir, 2023, Volvariella variicystidiosa sp. nov. (Agaricaceae, Basidiomycota) from Punjab, Pakistan, pp. 189-198 in Phytotaxa 578 (2) on page 194, DOI: 10.11646/phytotaxa.578.2.5, http://zenodo.org/record/751786
FIGURE 3. A–F in Two new species of Xanthagaricus from Punjab, Pakistan
No full textFIGURE 3. A–F. Microscopic structures of Xanthagaricus kotadduensis (Holotype. LAH37122). A. Basidia, B. Basidiospores, C. Cheilocystidia, D. Pileipellis, E. Caulocystidia, Scale bars: A–E = 4.9µm, 6.5 µm, 5.5 µm, 7.6 µm, 4.5 µm.Published as part of Haqnawaz, Muhammad, Niazi, Abdul Rehman & Khalid, Abdul Nasir, 2023, Two new species of Xanthagaricus from Punjab, Pakistan, pp. 163-173 in Phytotaxa 583 (2) on page 169, DOI: 10.11646/phytotaxa.583.2.4, http://zenodo.org/record/760930
FIGURE 2. A–E in Two new species of Xanthagaricus from Punjab, Pakistan
No full textFIGURE 2. A–E. Microscopic structures of Xanthagaricus punjabensis (HQ–17) (Holotype. LAH37124) A. Basidia, B. Basidiospores, C. Cheilocystidia, D. Caulocystidia, E. pileal elements, Scale bars: A–E = 5.6 µm, 6.8 µm, 6.4 µm, 4.7 µm, 6.5 µm. Photos by: Muhammad HaqnawazPublished as part of Haqnawaz, Muhammad, Niazi, Abdul Rehman & Khalid, Abdul Nasir, 2023, Two new species of Xanthagaricus from Punjab, Pakistan, pp. 163-173 in Phytotaxa 583 (2) on page 167, DOI: 10.11646/phytotaxa.583.2.4, http://zenodo.org/record/760930
FIGURE 4 in Two new species of Xanthagaricus from Punjab, Pakistan
No full textFIGURE 4. Molecular phylogenetic analyses of Xanthagaricus species by maximum likelihood (ML) method based on ITS sequences. The evolutionary history was inferred by using the RAxML-HPC2 v 8.1.11. The analyses involved 40 nucleotide sequences and new species are in bold. Evolutionary analyses were conducted in CIPRES Portal v. 3.1. bootstrap values>50% based on 1000 replicates are shown above the branches.Published as part of Haqnawaz, Muhammad, Niazi, Abdul Rehman & Khalid, Abdul Nasir, 2023, Two new species of Xanthagaricus from Punjab, Pakistan, pp. 163-173 in Phytotaxa 583 (2) on page 170, DOI: 10.11646/phytotaxa.583.2.4, http://zenodo.org/record/760930
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
Volvariella variicystidiosa Haqnawaz, Zaman, Niazi & Khalid 2023, sp. nov.
No full textVolvariella variicystidiosa Haqnawaz, Zaman, Niazi & Khalid, sp. nov. (Figures 1, 2). MycoBank 845960 Etymology:—The specific epithet “ variicystidiosa ” (Latin) refers to variable shapes and sizes of cheilocystidia. Diagnosis:—convex to concave pileus, dull brown umbo with grayish brown striations; basidiospores broadly ellipsoid to obovoid; cheilocystidia abundant variable in shape, cymbiform to mucronate, narrowly to broadly moniliform with a broad base, broadly ellipsoid, triangular to conical; pleurocystidia moderately ellipsoid, rarely flexuous, and oblong; light yellow to gray and terminal cell broad cylindrical, apically often mucronate. Holotype:— PAKISTAN. Punjab, Muzaffargarh district, Indus Riverbed, Kot Addu, (30°14’44” N, 70°51’04” E, 134 m a.s.l.) on soil, rich in organic matter, September 03, 2020, Muhammad Haqnawaz (LAH37568). GenBank OP549026 (ITS). Description:— Basidiomata medium-sized. Pileus 15–24 mm, campanulate when young becoming convex to concave, umbonate at maturity, serrate margins, split like grayish brown (5 YR 6/2) striations toward margin on light gray (5 YR 6/2) surface, light gray (10YR 7/1) to dull brown (7.5 YR 5/3) umbo at the mature stage, wrinkled, sulcate to slightly split cap margin, soft, dry, thin and light gray (10YR 7/1) context. Lamellae dull orange (5 YR 7/3), free, narrow, medium size, 2–4 mm width, average, crowded, fimbriate edges, arid misc, branched, 1–2 tiers. Stipe 48– 25 mm, light gray (7.5 Y 8/1), central, flexuous, very slightly thickened downward, rounded, rough surface, hairy, mycelium present on the base, Volva dark grayish yellow (2.5 Y 4/2) color with three to four limbs, 3–5 mm length. Annulus absent. Taste and odor were not recorded. Basidiospores [60/2/2] (5.3–)5.8 –7.4(–7.6) × (3.7–) 4.1 –5.1(–5.5) µm, avl × avw = 6.5 × 4.7 um, Q = 1.13–1.62 µm, Qav = 1.37 µm, broadly ellipsoid to obovoid, hyaline to light brown in 5% KOH, thick-walled, guttulate. Basidia 24–33 × 77–10 µm, hyaline in 5% KOH, 2–4 spored, thick-walled, clavate, fusiform, smooth, guttulate, clamp connection absent. Cheilocystidia 24–92 × 10–37 µm, abundant, broad variation in size and shape, cymbiform to mucronate, narrowly to broadly moniliform with a broad base, and moderately knobbed lageniform, narrowly to broadly fusiform, utriform, rarely broadly ellipsoid to ellipsoid with obtuse apex, triangular to conical hyaline in 5% KOH, and clamp connection absent. Pleurocystidia 42–81 × 12–28 µm, extremely variable in size and shape, moderately narrowly utriform, broadly clavate, ellipsoid, fusiform, rarely flexuous, oblong, hyaline in 5% KOH, and clamp connection absent. Pileipellis 13–35 µm diam., cutis type, terminal cell broad cylindrical, apically often mucronate, 72–136 × 12–30 µm, light yellow to gray in 5% KOH, smooth, branched, septate and clamp connections absent. Stipitipellis 9–25 µm diam., thin-walled, irregular intricate cutis type, light yellow to gray in 5% KOH, branched, clamp connections absent. rarely clavate and smooth caulocystidia present. Ecology: Scattered, terrestrial, on sandy soil rich in organic matter. Additional materials examined: Pakistan, Punjab, bed of Indus River, Kot Addu, Muzaffargarh, (30°14’44” N, 70°51’04” E, 134 m a.s.l.) on soil rich in organic matter, August 16, 2019, Muhammad Haqnawaz (LAH37569). GenBank OP549027 (ITS). Same location, August 03, 2021, Muhammad Haqnawaz (LAH37570).GenBank OP549028 (ITS). Khushab, Noorpur Thal, Peelowains (31°59’17.36”N, 71°59’25.86”E, 191 m a.s.l.), August 08, 2021, Zaman Khan (LAH37571). GenBank OP549025 (ITS).Published as part of Haqnawaz, Muhammad, Khan, Zaman, Niazi, Abdul Rehman & Khalid, Abdul Nasir, 2023, Volvariella variicystidiosa sp. nov. (Agaricaceae, Basidiomycota) from Punjab, Pakistan, pp. 189-198 in Phytotaxa 578 (2) on page 191, DOI: 10.11646/phytotaxa.578.2.5, http://zenodo.org/record/751786
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