Entoloma pakistanicum Khalid, Naseer

Khalid, Abdul Nasir, Razzaq, Fauzia, Naseer, Arooj, Qasim, Tayyaba & Kanwal, Sobia, 2024, Two new species and a new record of Entolomatoid fungi (Entolomataceae, Agaricales) from Pakistan, Phytotaxa 666 (1), pp. 1-16 : 4

publication ID	https://doi.org/10.11646/phytotaxa.666.1.1
persistent identifier	https://treatment.plazi.org/id/C54E1326-5A66-0C6D-0EBB-FF5FD5E5FBB1
treatment provided by	Felipe
scientific name	Entoloma pakistanicum Khalid, Naseer
status	sp. nov.

Treatment

Entoloma pakistanicum Khalid, Naseer , A., sp. nov. Fig. 2 View FIGURE 2

MycoBank:—MB 837771

Etymology:—‘ pakistanicum’ refers to Pakistan, the type locality.

Diagnosis:— Entoloma pakistanicum is characterized by a convex pileus, 3.2–4 cm in diam., lamellae adnexed, with serrate margins, and larger subisodiametrical basidiospores (9.9–13.9 × 7.1–11.1 μm with 4–7 angles) than the similar E. lacus (7.1–7.3–8.1 × 6.2–6.8–7.1 μm with 5–6 angles).

Type:— PAKISTAN. Khyber Pakhtunkhwa Province, Kurram District, Parachinar , elev. 1740 m a.s.l., 30 July 2019, Arooj Naseer & Abdul Nasir Khalid, ANK-252, ( LAH36758 About LAH ; ITS: MW218151 ; LSU: MW142504 ) .

Description:— Pileus 3.2–4 cm diam., convex, umbilicate, light brown (7.5Y 7/2) in the center and slightly darker brown (5Y 7/2) towards the margin, becoming dark brown (5Y 7/2) when mature, pileus surface smooth, matt, with a shiny appearance, margin incurved, hygrophanous. Lamellae adnexed, creamy white (1.3BG5/0.6), pink (5YR7/4) at maturity, margin serrate and concolorous with faces, close, with 2–3 tiers lamellulae. Stipe centrally attached, 5–5.7 cm length, 0.9–1.2 cm diam., subclavate, solid, dry, fibrillose, creamy white (1.3BG 5/0.6), with a brown tinge in the lower portion, with a broad base. Odor aromatic resembling fruit. Taste not recorded. Spore print not taken.

Basidiospores (9.9–) 10.1–13.1 (–13.9) × (7.1–) 7.9–10.8 (–11.1) µm, (avl × avw = 11.7 × 9.2 µm,) Q = 1–1.7, Qav = 1.3, subisodiametrical, with 4–7 angles, hyaline, thick-walled. Basidia 33.5–57.4 × 11.5–17.4 µm, clavate to broadly clavate, hyaline, thin-walled, 2–4-spored. Cheilocystidia 21.6–29 × 8–9.9 µm, narrowly clavate to narrowly utriform, hyaline, thin-walled. Pileipellis a cutis composed of septate, branched, thick-walled hyphae, 3.9–14.2 µm diam., hyaline to light brown in 5 % KOH. Stipitipellis a cutis composed of thin-walled hyphae, septate, branched, hyaline, 4.2–16.7 µm diam., Caulocystidia present throughout the stipe, clavate to cylindro-clavate, l×w= 106.1–133 × 20.4–27.1 µm, thick-walled, hyaline. Clamp connections abundant in all tissues.

Ecology:—Growing on loamy soil in a moist temperate forest dominated by Quercus baloot .

Material examined:— PAKISTAN. Khyber Pakhtunkhwa Province, Kurram District, Parachinar , August 2019, Arooj Naseer & Abdul Nasir Khalid, PC-26 ( LAH36759 About LAH ; ITS: MW218150 ; LSU: MW142505 ) .