Boletales » Boletaceae » Phylloporus

Phylloporus subrubeolus

Basidiomata small-sized. Pileus 2.5–3.5 cm broad, convex or plano-convex; lamellar edge entire; at centre brownish orange (6C8) abruptly paler to light orange (5A5) at margin; surface dry, velutinous or rimose, staining absent; context white, staining absent. Hymenophore lamellate, decurrent; lamellae subdistant with lamellulae, ventricose, intervenose to anastomosing, pastel yellow (1A4), staining absent. Stipe 3.5–5 cm long, 0.3–0.4 cm wide, mostly equal, venose light orange, staining absent; context solid, white, slightly blue at first, later become reddish orange (7A8). Basal mycelium white. Macrochemical reactions: with NH4OH, browning on pileus and stipe. Basidiospores [100/2/2] (6.9–)7.2–8.4–9.7(–10.8) × (4.2–)4.5–5.2–5.8(–6.2) μm, Q = (1.43–)1.49–1.62–1.81(–1.88), subovoid to elliptical, greyish yellow (1B3) in 5% KOH, smooth under light microscope but with bacillate ornamentation under SEM. Basidia (27.7–)27.8–30.9–33.8(–33.8) × (7.8–)7.9–9.4–10.5(–10.5) μm, clavate, hyaline, 4-spored. Cheilocystidia (47.5–)47.7–66.4–81(–81.1) × (12.1–)12.1–15–18.9(–18.9) μm, broadly clavate. Pleurocystidia (58.1–)58.8–76–91.7(–91.8) × (12.6–)12.7–15.9–19.3(–19.4) μm, utriform to sublageniform. Hymenophoral trama 125–250 μm thick, regular composedof 12–15 μm wide cylindrical, smooth, hyaline hyphae. Pileipellis interwoven trichoderm with terminal cells 24–52 × 9–13 μm, granular content present, with abundant cell wall encrustations pigment visible in aqueous Congo Red, also in sub-terminal cells. Pileus trama made of hyaline 10–25 μm wide. Stipitipellis 75–125 μm thick, with parallel hyphae and caulocystidia (27.0–)27.3–49.6–69.5(−69.7) × (12–)12–16.1–19.5(–19.5) μm, clavate, hyaline, smooth. Stipe trama parallel, cylindrical, hyaline hyphae 12.5–15 μm wide. Clamp connections absent in all tissues. (Figs. 1-2)

 

 

MycoBank number: MB 827268, Facesoffungi number: FoF 04844.

 

Etymology: subrubeolus refers to the reddish brown pileus as well as to the close relationship with P. rubeolus.

 

Holotype: Thailand. Chiang Mai Province, Mae-on District, Mae Kam Pong, elev. 1300 m, 12/06/2016, Boontiya Chuankid, BC022 (MFLU16–2229).

 

Habit, habitat and distribution: Solitary to gregarious on the ground in broad-leaved forest dominated by either Fagaceae or Dipterocarpaceae. Currently only known from Thailand.

 

Specimen examined: Thailand. Chiang Mai province, Meuang District, Doi Suthep-Pui National Park, N18°48.0′–E98°55.8′, elev. 720 m, 17/05/2015, O. Raspé, OR0612 (CMUB).

 

 

Fig. 1 Basidiomata of Phylloporus subrubeolus (holotype, BC022) in the field. Scale bars = 1 cm.

 

 

Fig. 2 Micro-morphological characters of Phylloporus subrubeolus. a Basidiospores. b Basidia. c Cheilocystidia. d Pleurocystidia. e Pileipellis. f Caulocystidia. Scale bars: a = 10 μm; b–d, f = 20 μm; e = 20 μm. All drawings were made from the type (BC022).

 

 

 

Reference

 

Chuankid B, Vadthanarat S, Hyde KD, Thongklang N, Zhao R, Lumyong S and Raspé O 2019 – Three new Phylloporus species from tropical China and Thailand. Mycological Progress, 18(5), pp.603–614.

 

Recent News

Nutritional analysis of cultivated Pleurotus giganteus in agricultural waste as possible alternative substrates
utilization notes of the edibility, economic and medicinal value and if the mushroom is cultivated
The genus Lentinus in Thailand: taxonomy, cultivation tests, nutritional analysis and screening for the biological activity of wild strains

Recent Genus

Tricholomopsis
Erythrophylloporus
Boletinellus

Recent Species

Lactarius lavandulus
Russula zonaria
Russula sribuabanensis