Chalciporus species

Zhang, Ming, Li, Tai-Hui & Song, Bin, 2017, Two new species of Chalciporus (Boletaceae) from southern China revealed by morphological characters and molecular data, Phytotaxa 327 (1), pp. 47-56 : 54

Key to Chalciporus species in China

1. Stipe surface smooth; hymenophore regular, not obviously radially arranged..................................................................................2

1. Stipe surface with brown to reddish brown dots, hymenophore obviously radially arranged, pileus grayish yellow to brownish orange, basidiospores smaller, 7–8 × 3.5–4 μm ................................................................................................................. C. radiatus

2. Basidiospores relatively broader, with a Qm <2.5; staining blue on tubes or context at first when bruised; hymenophore brownish yellow to brownish orange; basidiospores 8–10.5(11) × 4–5(5.5) μm......................................................................... C. hainanensis

2. Basidiospores relatively narrower, with a Qm> 2.5; not staining blue anywhere when bruised......................................................3

3. Pileus surface olive yellow to orange; hymenophore reddish orange to orange red; pores large 1–1.5 mm in diam; stipe context changing to light yellow when exposed; basidiospores (9.0)9.5–12.5(13) × (3)3.5–4(4.5) μm ........................... C. citrinoaurantius

3. Pileus surface light orange to brownish orange; hymenophore grayish red to red; pores small 2–3/mm; stipe context yellowish and unchanging when exposed; basidiospores 11.5–15(16) × 4–5.5(6) μm ..................................................................... C. rubinelloides