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Abstract Detail


Saba, Malka [1], Pfister, Donald H. [2], Khalid, Abdul Nasir [3], Matheny, P. Brandon [4].

Two new species of Inocybe sect. Rimosae from pine dominating forests of western Himalayas, Pakistan.

Inocybe (Fr.) Fr. (Agaricales, Inocybaceae) is a highly diverse ectomycorrhizal genus comprising some 750 known taxa worldwide. However, a considerable number of taxa have yet to be formally described. Inocybe has a widespread distribution and is found commonly in temperate areas and to a lesser extent in the tropics. During fungal surveys conducted between 2012-2014, two species of this genus were collected from pine dominating forests of the western Himalayas, Pakistan and are documented morphologically and phylogenetically. The new species are Inocybe sp. 1 and I. sp. 2, which belong to the Pseudosperma clade (sect. Rimosae), one of seven major clades in the family. Species of the Pseudosperma clade are typically characterized by a rimose pileus; furfuraceous to furfuraceous-fibrillose stipe; absence of metuloids and pleurocystidia; smooth, elliptical to indistinctly phaseoliform basidiospores, and cylindrical to clavate cheilocystidia. Comprehensive morphological and microscopic descriptions, illustrations and phylogenetic affiliations of the studied taxa are provided. Both of the species are differentiated from their close relatives by the size of spores and coloration of pileus, stipe and lamellae. Phylogenetic analysis of ITS, nLSU-rRNA, and mtSSU-RNA gene regions confirmed the novelty of species and their placement within the Pseudosperma clade. Both of the newly described taxa share an ecological association with pine species.

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1 - University of Gujrat, Botany, Room # 107, Department of Botany, University of Gujrat,, Hafiz Hayat Campus, Gujrat, Punjab, 50700, Pakistan
2 - Harvard University, Department of Organismic and Evolutionary Biology, Harvard University Herbaria, 22 Divinity Avenue, Cambridge, MA, 02138, USA
3 - University of the Punjab, Department of Botany, Quaid-e-Azam campus, Lahore, 54590, Pakistan
4 - University of Tennessee, Department of Ecology and Evolutionary Biology, Hesler Biology Building 332, Knoxville, TN, 37996-1610, USA

Ectomycorrhizal fungi
Western Himalayas
Pinus roxburghii
Pinus wallichiana.

Presentation Type: Oral Paper
Session: 14, Systematics I: Basal Dicots, Monocots & Rosids
Location: Sundance 1/Omni Hotel
Date: Monday, June 26th, 2017
Time: 1:30 PM
Number: 14001
Abstract ID:257
Candidate for Awards:None

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