Pluteus chrysophlebius (Berk. & M.A. Curtis)

Cho, Sung-Eun, Kim, Yong Ho, Lee, Dong-Hyeon, Shin, Keum Chul, Kim, Minkyeong & Kim, Changmu Kim and Nam Kyu, 2025, First report of four unrecorded macrofungal species in two national parks of South Korea, Journal of Species Research 14 (2), pp. 133-139 : 137

3. Pluteus chrysophlebius (Berk. & M.A. Curtis)

Sacc., Syll. fung. (Abellini) 5: 678 (1887) ( Figs. 3 , 7 )

Diagnostic characters. Pileus 15-25 mm, bell-shaped to broadly conic when young, broadly convex to flat when old; upper surface bright yellow when young, dull yellow or brownish-yellow when old, veined, margin finely lined. Lamellae free, close, or crowded, whitish when young, pinkish when old. Stipe 20-45 × 1-3 mm, cylindrical, equal or slightly tapering upward, pale yellow, fragile, bald, basal mycelia white. Basidiospores 5.1-6.9 × 4.5- 6.1 μm, subglobose to ellipsoid, smooth; hyaline, inamyloid. Basidia 20-30 × 7.5-11 μm, fusiform to clavate, thin-walled, 4-sterigmata. Pleurocystidia 35-60 × 15-20 μm, widely lageniform, thick-walled, and hyaline.

Habitat. Solitary on litter and soil in mixed forests.

Material examined. KOREA, Juwangsan National Park, Cheongsong-gun , Gyeongsangbuk-do, 36°24 ʹ 1.78 ʺ N 129° 10 ʹ 43.8 ʺ E, 20 vi 2023, NK Kim, NIBRFG0000515403 .

Remarks. As shown in a previous study ( Justo et al., 2011), the sequences of P. chrysophlebius were grouped into three distinct subclades. According to Malysheva et al. (2016), Pluteus sect. Celluloderma can recognize ten taxa including three species complexes, namely P. chrysophlebius , P. phlebophorus , and P. cinereofuscus . Therefore, P. chrysophlebius is recognized as a species complex, and further studies are required for the taxonomic identification of this species.

Figures

Fig. 3. RAxML phylogenetic tree based on ITS sequences of Pluteus chrysophlebius: Sequences generated in this study are indicated in bold text.

Fig. 7. Morphological characters of Pluteus chrysophlebius: A, CKU20230620-12; B, C, basidia; D, basidiospores. Scale bars: 1 cm (A); 5 μm (B-D).