Neonothopanus nambi (Speg.) R.H. Petersen and Krisai-Greilhuber, Persoonia

Hu, Jia-Jun, Li, Yu, Li, Xiao, Frederick, Sossah Leo & Zhang, Bo, 2021, New findings of Neonothopanus (Marasmiaceae, Basidiomycota) from Ghana, Phytotaxa 512 (1), pp. 57-67 : 62-64

Neonothopanus nambi (Speg.) R.H. Petersen and Krisai-Greilhuber, Persoonia 17(2): 210 (1999) ( Figs. 3b, 3d , 5 )

Genbank:— MK928490 , MW250232

Description:— Basidiocarp annual, solitary, scattered to gregarious, small to medium sized. Pileus semicircular or circular, depressed, 3.5–5.0 cm diam, white to light brown when mature, radially striate; margin white, entire, sometimes petaloid or serrated, usually involute. Context white, thin, odorless. Lamellae white, thin, decurrent, 1– 3 tiers of lamellulae, entire, sometimes wavy, non bifurcate. Stipe 0.6–1.3 cm long and 0.3–0.6 cm diam, white, cylindrical or conical, lateral, smooth, solid, fibrous. Spore print unknown.

Basidiospores 5.0–6.3(–8.0) × 2.9–3.4 μm, Qm = 1.86 ± 0.22, oblong to cylindrical, smooth, thin-walled, inamyloid, hyaline in 3% KOH. Basidia 23–28 × 4–7 μm, clavate to cylindrical, thin-walled, 4-spored, hyaline in 3% KOH; Sterigmata 0.5–1.5 μm long. Basidioles 13–30 × 3–6 µm, thin-walled, hyaline in 3% KOH. Cheilocystidia and pleurocystidia absent.

Ecology and distribution:—Growing on rotten wood. Found in Ghana, China, Vietnam, Indonesia, Malaysia, and Australia.

Material examined:— GHANA. Bunso Arboretum Guesthouse : on rotten wood, 8 November 2016, Bo Zhang & Xiao Li, HMJAU 48221 . CHINA. Guangdong Province: Guangzhou City, Tianhe Children’s Park , on rotten wood, 17 April 2016, Yaheng Shen & Yaoguang Li, HMIDG 45528 . Guangzhou City, Tianlu Lake , on rotten wood, 28 April 2016, Zongpin Song, GDGM 45878 . Huizhou City, Xiangtoushan National Nature Reserve , on rotten wood, 17 May 2016, Zongpin Song & Hao Huang, GDGM 46131 . Zhaoqing City , Fengkai County, on rotten wood, 7 May 2013, Hao Huang, GDGM 46234 . Yangjiang City, E’huangzhang Provincial Nature Reserve , on rotten wood, 7 May 2013, Hao Huang, GDGM 46236 . Guangzhou City, Baiyun Mountain , on rotten wood, 14 April 2016, Ming Zhang, GDGM 46513 .

Neonothopanus hygrophanus (Mont.) De Kesel and Degreef , in Ndong, Degreef and De Kesel, ABC Taxa 10: 168 (2011) ( Figs. 3c , 6 )

GenBank:— MK931356 , MW250230

Description:— Basidiocarp annual, small-sized, scattered to gregarious. Pileus semicircular, depressed or convex, 1.2–2.1 cm diam, white when young, showing cinnamon areas rapidly, white to dark brown when mature; margin thin, wavy, involute, or sometimes revolute. Context thin, white, odorless. Lamellae white, thin, wavy, decurrent, 1–3 tiers of lamellulae, non bifurcate. Stipe 0.2–0.9 cm long and 0.1–0.6 cm diam., white to light brown, lateral, cylindrical, smooth, solid, fibrous. Taste bitter. Spore print unknown.

Basidiospores 4.9–6.2(–7.6) × 3.0–4.0 μm, broadly elliptical to cylindrical, Qm = 1.74 ± 0.25, smooth, thinwalled, inamyloid, hyaline in 3% KOH. Basidia 11–25 × 4–6 μm, clavate, thin-walled, 4-spored, hyaline in 3% KOH; Sterigmata 1.0–4.0 μm long. Basidioles 13–26 × 4–6 µm, thin-walled, hyaline in 3% KOH. Cheilocystidia and pleurocystidia absent.

Ecology and distribution:—Growing on rotten wood. Found in Ghana, Benin, Burkina Faso, Congo, Gabon, Kenya, Niger, Sierra Leone, Togo, and Tanzania ( Zanzibar).

Material examined:— GHANA. Bunso Arboretum Guesthouse: on rotten wood, 8 November 2016, Bo Zhang & Xiao Li, HMJAU 48220 .

Figures

FIGURE 3. Basidiomes of Neonothopanus species. a N. cystidiosus; b, d N. nambi; c N. hygrophanus. Scale bars: a–d= 1 cm. Photos by: Bo Zhang.

FIGURE 5. Neonothopanus nambi (HMJAU 48221). a. basidiocarp. b. basidia. c. basidiospores. Scale bars: a =1 cm, b–c= 5 µm. Drawings by: Jia-jun Hu.

FIGURE 6. Neonothopanus hygrophanus (HMJAU 48220). a. basidiocarp. b. basidia. c. basidiospores. Scale bars: a = 1 cm, b–c = 5 µm. Drawings by: Jia-jun Hu.