Abstract
Amanita stubbosa, a new species in subclade III of A. sect. Phalloideae, is described from West Africa based on morphological and molecular evidence. The species is characterized by a white pileus covered with small white broadly adherent squamules or greyish to whitish erected, pyramidal, subconical, patchy universal veil, a slightly striate pileal margin, a marginate basal bulb, and broadly ellipsoid to ellipsoid, weakly amyloid basidiospores. Phylogenetic analyses based on three gene regions (nrLSU, RPB2, and TEF1-α) revealed that A. stubbosa is a distinct species closely related to A. bulbulosa. Moreover, A. stubbosa was reported to lack the most notorious toxins (amatoxins and phallotoxins). A detailed description, illustrations, and comparisons with morphologically and phylogenetically closely related species are provided.
References
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cai, Q., Cui, Y.Y. & Yang, Z.L. (2016) Lethal Amanita species in China. Mycologia 108 (5): 993–1009. https://doi.org/10.3852/16-008</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cai, Q., Tulloss, R.E., Tang, L., Tolgor, B., Zhang, P., Chen, Z.H. & Yang, Z.L. (2014) Multi-locus phylogeny of lethal amanitas: implications for species diversity and historical biogeography. BMC Evolutionary Biology 14: 143. https://doi.org/10.1186/1471-2148-14-143</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Castresana, J. (2000) Selection of conserved blocks from multiple alignments for their use in phylogenetic analysis. Molecular Biology and Evolution 17 (4): 540?552. https://doi.org/10.1093/oxfordjournals.molbev.a026334 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Codjia, J.E.I., Cai, Q., Zhou, S.W., Luo, H., Ryberg, M., Yorou, N.S. & Yang, Z.L. (2020) Morphology, multilocus phylogeny, and toxin analysis reveal Amanita albolimbata, the first lethal Amanita Species from Benin, West Africa. Frontiers in Microbiology 11: 599047. https://doi.org/10.3389/fmicb.2020.599047 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Codjia, J.E.I., Wang, P.M., Ryberg, M., Yorou, N.S. & Yang, Z.L. (2022) Amanita sect. Phalloideae: two interesting non-lethal species from West Africa. Mycological Progress 21: 39. https://doi.org/10.1007/s11557-022-01778-0</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Corner, E.J.H. & Bas, C. (1962) The genus Amanita in Singapore and Malaya. Persoonia 2: 241?304. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cui, Y.Y., Cai, Q., Tang, L.P., Liu, J.W. & Yang, Z.L. (2018) The family Amanitaceae: molecular phylogeny, higher-rank taxonomy and the species in China. Fungal Diversity 91: 5–230. https://doi.org/10.1007/s13225-018-0405-9</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cui, Y.Y., Cai, Q. & Yang, Z.L. (2021) Amanita chuformis, a new Amanita species with a marginate basal bulb. Mycoscience 62: 29–35. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Davison, E.M., Giustiniano, D., Busetti, F., Gates, G.M. & Syme, K. (2017) Death cap mushrooms from southern Australia: additions to Amanita (Amanitaceae, Agaricales) section Phalloideae Clade IX. Australian Systematic Botany 30: 371–389. https://doi.org/10.1071/SB17032</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Do, T., Bigot, S., Zin, I. & Galle, S. (2013) Etude des relations entre la couverture végétale et la température de surface calculées à partir des données Landsat ETM+ à l’échelle du bassin versant de l’Ouémé supérieur (Bénin). Proceedings of the XXVIth Conference of International Climatology Association 26: 206–211.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Do, T., Bigot, S. & Galle, S. (2014) Vegetation activity in the Upper Oueme Basin (Benin, Africa) studied from SPOT-VGT (2002-2012) according to land cover. International Journal of Remote Sensing Applications 4: 121–133. https://doi.org/10.14355/ijrsa.2014.0403.02</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Doyle, J.J. & Doyle, J.L. (1987) A rapid DNA isolation procedure for small quantities of fresh leaf tissue. Phytochemical bulletin 19: 11–15. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Fraiture, A., Amalfi, M., Raspé, O., Kaya, E., Akata, I. & Degreef, J. (2019) Two new species of Amanita sect. Phalloideae from Africa, one of which is devoid of amatoxins and phallotoxins. MycoKeys 53: 93–125. https://doi.org/10.3897/mycokeys.53.34560</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hall, T.A. (1999) BioEdit: a user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT. Nucleic acids symposium series 41: 95–98. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Henriot, A. & Cheype, J.L. (2020) Piximètre: La mesure de dimensions sur images. Version 5.10.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hoang, D.T., Chernomor, O., von Haeseler, A., Minh, B.Q. & Vinh, L.S. (2018) UFBoot2: Improving the ultrafast bootstrap approximation. Molecular Biology and Evolution 35: 518–522. https://doi.org/10.1093/molbev/msx281 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hongo, T. (1974) Two new species of Amanita from Castanopsis forests in Japan. In: Travaux Mycologiques Dédiés à R Kühner. Numéro spécial du Bulletin Mensuel de la Société Linnéenne de Lyon 43e année, 1974. pp. 189–193.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Jansson, D., Fredriksson, S.Å., Herrmann, A. & Nilsson, C. (2012) A concept study onidentification and attribution profiling of chemical threat agents using liquidchromatography-mass spectrometry applied to Amanita toxins in food. Forensic Science International 221: 44–49. https://doi.org/10.1016/j.forsciint.2012.03.023</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Jenkins, D.T. (1988) A new species of Amanita from North America: Amanita levistriata. Mycotaxon 32 (32): 415–419. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Justo, A., Morgenstern, I., Hallen-Adams, H.E. & Hibbett, D.S. (2010) Convergent evolution of sequestrate forms in Amanita under Mediterranean climate conditions. Mycologia 102: 675–688. https://doi.org/10.3852/09-191</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Katoh, K. & Standley, D. (2013) MAFFT multiple sequence alignment software version 7: improvements in performance and usability. Molecular Biology and Evolution 30 (4): 772–780. </span></span></span>
<p align="justify"><span style="color: #000000;"> <span style="font-family: Times New Roman, serif;"><span style="font-size: small;">https://doi.org/10.1093/molbev/mst010 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kearse, M., Moir, R., Wilson, A., Stones-Havas, S., Cheung, M., Sturrock, S., Buxton, S., Cooper, A., Markowitz, S., Duran, C., Thierer, T., Ashton, B., Meintjes, P. & Drummond, A. (2012) Geneious Basic: an integrated and extendable desktop software platform for the organization and analysis of sequence data. Bioinformatics 28: 1647–1649.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kornerup, A. & Wanscher, J.H. (1981) Taschenlexikon der Farben. 3rd ed. Muster-Schmidt Verlag, Zürich und Göttingen. 242 pp. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lanfear, R., Frandsen, P.B., Wright, A.M., Senfeld, T. & Calcott, B. (2017) PartitionFinder 2: New methods for selecting partitioned models of evolution for molecular and morphological phylogenetic analyses. Molecular Biology and Evolution 34: 772–773. https://doi.org/10.1093/molbev/msw260 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Li, H.J., Xie, J.W., Zhang, S., Zhou, Y.J., Ma, P.B., Zhou, J. & Sun, C.Y. (2015) Amanita subpallidorosea, a new lethal fungus from China. Mycological Progress 14, 43. https://doi.org/10.1007/s11557-015-1055-x</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Nguyen, L.-T., Schmidt, H.A., von Haeseler, A. & Minh, B.Q. (2015) IQ-TREE: A fast and effective stochastic algorithm for estimating maximum-likelihood phylogenies. Molecular Biology and Evolution 32: 268–274. https://doi.org/10.1093/molbev/msu300</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Persoon, C.H. (1797) Tentamen dispositionis methodicae fungorum in classes, ordines, genera et familias. Lipsiae, P.P. Wolf. https://doi.org/10.5962/bhl.title.42674</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Pringle, A., Adams, R.I., Cross, H.B. & Bruns, T.D. (2009) The ectomycorrhizal fungus Amanita phalloides was introduced and is expanding its range on the west coast of North America. Molecular Ecology 18: 817–833. https://doi.org/10.1111/j.1365-294X.2008.04030.x</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Rambaut, A. (2018) FigTree v1.4.4: Tree figure drawing tool. Available from: https://github.com/rambaut/figtree/releases (Accessed 20 Aug. 2021) </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Rehner, S.A. & Buckley, E. (2005) A Beauveria phylogeny inferred from nuclear ITS and EF1-? sequences: evidence for cryptic diversi?cation and links to Cordyceps teleomorphs. Mycologia 97 (1): 84–98. https://doi.org/10.3852/mycologia.97.1.84 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Ronquist, F., Teslenko, M., van der Mark, P., Ayres, D.L., Darling, A., Höhna, S., Larget, B., Liu, L., Suchard, M.A. & Huelsenbeck, J.P. (2012) MrBayes 3.2: efficient Bayesian phylogenetic inference and model choice across a large model space. Systematic Biology 61: 12–20. https://doi.org/10.1093/sysbio/sys029 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Sarawi, S., Shi, YN., Lotz-Winter, H., Reschke, K., Bode, H.B. & Piepenbring, M. (2022) Occurrence and chemotaxonomical analysis of amatoxins in Lepiota spp. (Agaricales). Phytochemistry 195: 113069. https://doi.org/10.1016/j.phytochem.2021.113069</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Sgambelluri, R.M., Epis, S., Sassera, D., Luo, H., Angelos, E.R. & Walton, J.D. (2014) Profiling of amatoxins and phallotoxins in the genus Lepiota by Liquid Chromatography combined with UV absorbance and mass spectrometry. Toxins 6: 2336–2347. https://doi.org/10.3390/toxins6082336 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Swofford, D.L. (2002) PAUP*. Phylogenetic analysis using parsimony (*and other methods). Version 4.0b10. Sinauer Associates, Sunderland, Massachusetts. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Talavera, G. & Castresana, J. (2007) Improvement of phylogenies after removing divergent and ambiguously aligned blocks from protein sequence alignments. Systematic Biology 56: 564–577. https://doi.org/10.1080/10635150701472164</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Thongbai, B., Miller, S.L., Stadler, M., Wittstein, K., Hyde, K.D., Lumyong, S. & Raspé, O. (2017) Study of three interesting Amanita species from Thailand: morphology, multiple-gene phylogeny and toxin analysis. PLoS ONE 12 (8): e018213. https://doi.org/10.1371/journal.pone.0182131 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Tulloss, R.E. & Yang, Z.L. (2022) Studies in the Amanitaceae. Available from: http://www.amanitaceae.org?home (Accessed 21 Nov. 2022). </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Vilgalys, R. & Hester, M. (1990) Rapid genetic identi?cation and mapping of enzymatically ampli?ed ribosomal DNA from several Cryptococcus species. Journal of Bacteriology 172 (8): 4238–4246. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Wolfe, B.E., Tulloss, R.E. & Pringle, A. (2012) The irreversible loss of a decomposition pathway marks the single origin of an ectomycorrhizal symbiosis. PLOS ONE 7: e39597. https://doi.org/10.1371/journal.pone.0039597</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Yang, Z.L. (1997) Die Amanita-Arten von Südwestchina. Bibliotheca mycologica 170: 1–240. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Yang, Z.L., Li, T.H. & Wu, X.L. (2001) Revision of Amanita collections made from Hainan, southern China. Fungal Diversity 6: 149–165.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Yang, Z.L. (2005) Flora fungorum sinicorum. Vol. 27. Amanitaceae. Science Press, Beijing. 258 pp. </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Yang, Z.L. (2015) Atlas of the Chinese species of Amanitaceae. Science Press, Beijing. 213 pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Zhang, D., Gao, F., Jakovli?, I., Zou, H., Zhang, J., Li, W.X. & Wang, G.T. (2020) PhyloSuite: An integrated and scalable desktop platform for streamlined molecular sequence data management and evolutionary phylogenetics studies. Molecular Ecology Resources 20: 348–355. https://doi.org/10.1111/1755-0998.13096 </span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Zin, I., Zribi, M., Ottlé, C., Hiernaux, P., Lacaze, R., Le Hénarat-Mascle, S., Sanou, B., André, C., Guibert, S., Saux-Picart, S., Dessay, N., Boulain, H., Cappelaere, B., Decroix, L., Séghieri, J. & Séguis, L. (2009) Land covers assessment on the three AMMA experimental sites from SPOT HRVIR data. International Journal of Applied Earth Observation and Geoinformation Special issue “Remote sensing for Africa”, JAG-D-08-00159.</span></span></span>
