Hymenagaricus pakistanicus (Agaricaceae, Agaricales), a new species from Pakistan based on morphological and molecular evidence Author Syed, Mahrukh Farid 0000-0002-5287-1102 Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan & mahrukhkhan 972 @ gmail. com; https: // orcid. org / 0000 - 0002 - 5287 - 1102 mahrukhkhan972@gmail.com Author Saba, Malka Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan Author Chattha, Seratt Mukhtar 0000-0002-0247-9479 Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan & serattchattha 000 @ gmail. com; https: // orcid. org / 0000 - 0002 - 0247 - 9479 serattchattha000@gmail.com Author Hosen, Md. Iqbal 0000-0003-2731-6841 School of Food Science and Engineering, Yangzhou University, Jiangsu, China & iqbalmyco @ gmail. com; https: // orcid. org / 0000 - 0003 - 2731 - 6841 iqbalmyco@gmail.com text Phytotaxa 2023 2023-05-01 594 4 292 300 http://dx.doi.org/10.11646/phytotaxa.594.4.6 journal article 53588 10.11646/phytotaxa.594.4.6 d7607eb2-8226-41d3-9fb4-cccccad80efb 1179-3163 7917096

TABLE 2. Origin, pileus size, hymeniform cells of the pileus, size of cheilocystidia and basidiospores of Heinemannomyces splendidissimus and Hymenagaricus species compared with H. pakistanicus (in bold). NR = not reported.

Species	Origin	Pileus diam. (cm)	Hymeniform cells (μm)	Cheilocystidia (μm)	Basidiospores (μm)
Hymenagaricus alphitochrous	Ghana, India, Sri Lanka, Kenya, Pakistan, Tanzania, Thailand	2.0–5.5	17–27×10–16	15–36 × 5–13	5.4–6.5 × 3.7–4.5
Hymenagaricus kivuensis	Burundi, Congo, Tanzania, Uganda	5.0–10.0	35–85 × 2–7	15–25 × 4.5–7	4.2–6.5 × 3.1–4.5
Hymenagaricus saisamornae	Thailand	1.0–2.5	18–48 × 6–10	13.5–37 × 8.5–13	5.5–7.0 × 4.0–4.5
Heinemannomyc. splendidissimus	Malaysia, China	3.5–6.5	NR	15–22 × 6–10	6–6.5 × 3.5–4.5
Hymenagaricus ardosiicolor	Tanzania, Togo, Zaire	4.0–6.0	NR	18–32 × 8–11	5.8–6.5 × 3.9–4.5
Hymenagaricus pakistanicus	Pakistan	2.4–3.0	5.2– 10.4×2–4	15.6–33.8 × 5.2–10.4	4.6–6.5 × 3.1–4.2