<i>Lepiota brunneogranulosa</i> (Agaricaceae): a new species from Punjab, Pakistan, based on integrated taxonomy

Asif, Muhammad; Izhar, Aiman; Haqnawaz, Muhammad; Niazi, Abdul Rehman; Khalid, Abdul Nasir

doi:10.1590/0102-33062021abb0382

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Original Article • Acta Bot. Bras. 36 • 2022 • https://doi.org/10.1590/0102-33062021abb0382 copy

Lepiota brunneogranulosa (Agaricaceae): a new species from Punjab, Pakistan, based on integrated taxonomy

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

During our surveys of mushrooms in 2019 and 2020, an interesting species of the genus Lepiota was collected from three different areas of Punjab (Bahawalnagar, Sheikhupura, and Muzaffarghar), Pakistan. These areas vary in their altitude and somewhat climatic conditions, nevertheless, morpho-anatomical comparisons and molecular analyses proved that these collections represented the same taxon, described here as Lepiota brunneogranulosa. This new species is characterized by a pileus with a yellowish-brown central disc, with brown colored granules on a very pale brown background, dextrinoid, ellipsoid basidiospores, frequently bi-sporic basidia, and narrowly clavate cheilocystidia. Because of the hymeniform pileus covering, and the placement in the phylogeny, based on Internal Transcribed Spacer (nrITS) and Larger Subunit (LSU), it belongs to the Lepiota sect. Lilaceae.

Keywords:
Bahawalnagar; Lepiotaceous fungi; litter-inhabiting; Phylogeny; taxonomy

Characters	L. brunneogranulosa	L. lilaceae	L. bengalensis	L. scaberula	L. ochraceofulva
Pileus	Plane, very pale brown	Violet, plano-convex to applanate,	Pastel red to brownish red, campanulate to conicoconvex, expanding to hemispherical to applanate with age	Paler around centre and whistish at margins, hemispherical to plano-convex	Orange brown to leather brown
Central disc	Yellowish-brown	Dark violet	Dark ochraceous or reddish brown	Cream to yellow-brownish	Reddish brown
Squamules	Brown granules	Violet, radially arranged appressed scales	Brownish red to reddish orange, appressed or radially arranged squamules	Irregularly fibrillose v-shaped squamules	Pileus broken into squamules
Lamellae	Sub-distant, light brown	Crowded, white	Distant to sub-crowded, pale yellow to yellowish white or light ochraceous-cream	Moderately crowded to moderately distant	Crowded
Basidiospores	Ellipsoid to broadly ellipsoid or oblong, av = 4.9 × 3.5 µm,	Ellipsoid to oblong, av = 5.2 × 3.1 µm	Ellipsoid to cylindrical, av = 5.6 × 3 µm	Ellipsoid to oblong, av = 5.7 × 3.6 µm	Broadly ellipsoid, av = 5.5 × 3.7 µm
Cheilocystidia	Narrowly clavate	Narrowly cylindrical, narrowly utriform	Fasciculate, clavate to narrowly clavate	Cylindrical and slightly widened at apex	Clavate
Pileus covering	Hymeniderm, irregularly arranged with obvoid, clavate to broadly clavate or utriform terminal cells	Hymeniderm made up of clavate to broadly clavate cells	Hymeniform, composed of clavate to broadly clavate or narrowly clavate cells	Cylindrical to slightly inflated hyphae	Hymeniform
Habitat	Scattered or in groups, on nutrient-rich loamy soil under Eucalyptus camaldulensis	Gregarious in small groups, on irrigated soil, on rich nitrophilous shrubs in woods under Sequoia sempervirens	Solitary, caespitose or gregarious in small groups on debris of Albizia and Eucalyptus	Gregarious, saprotrophic on soil in Sequoia sempervirens forests	On loamy soil, in gardens and parks

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[1] ^* Corresponding author: asifgondal101@gmail.com