A key to the species in sections Camphorati, Illumini and Laeti from China

1. Universal veil white………………………………………………………………………2

1. Universal veil bright colour…………………………………………………(sect. Laeti) 8

2. Basidiomata strongly unpleasant odour, pileus viscid, universal veil white, basidiospores amygdaloid to somewhat ellipsoid, finely and densely verrucose, cheilocystidia somewhat lageniform………………………………(sect. Camphorati) C. pseudocamphoratus

2. Basidiomata usually indistinct to more or less like radish without unpleasant odour, basidiospores globose, subglobose, to broadly ellipsoid…………………(sect. Illumini) 3

3. Pileus with distinctly translucent stripe…………………………………………………4

3. Pileus without distinctly translucent stripe………………………………………………5

4. Pileus vivid reddish-brown, basidiospores moderately verrucose, hyphae of the lamellar trama finely encrusted, usually occur in mixed forests of Larix gmelinii, Betula platyphylla and Vaccinium, distributed in northeast China…………………C. khinganensis

4. Pileus yellowish at first, then reddish-brown, stipe usually bulbous when young, basidiospores rather finely verrucose, hyphae of the lamellar trama smooth, occur in broadleaf forests of Castanopsis, Myrica, Quercus, Schima and Ericaceae, distributed in southwest China……………………………………………………………C. wuliangshanensis

5. Pileus usually reddish-brown, basidiospores moderately verrucose……………………6

5. Pileus usually yellowish to brown, almost without reddish-brown……………………7

6. Pileus often concentrically hygrophanous, with slightly translucent stripe at the margin, usually occur in coniferous forests, distributed in southwest China………C. illuminus

6. Pileus weakly hygrophanous, never translucently striated, usually occur in deciduous forests, distributed in northeast China……………………………………C. balaustinus

7. Pileus usually yellowish at first, stipe cylindrical to slightly clavate, usually with slightly tapered base, universal veil spares, basidiospores rather strongly verrucose, hyphae of the lamellar trama smooth……………………………………………C. yanjiensis

7. Pileus whitish to slightly yellowish-white at first, stipe subcylindrical to clavate or bulbous, universal veil rather copious, basidiospores finely verrucose, hyphae of the lamellar trama finely encrusted………………………………………………C. neobalaustinus

8. Basidiospores subglobose to broadly ellipsoid……………………………………………9

8. Basidiospores ellipsoid to subamygdaloid………………………………………………10

9. Pileus distinctly hygrophanous, universal veil reddish-brown to vinaceous-brown……………………………………………………………………………C. badiovinaceus

9. Pileus weakly hygrophanous, universal veil yellowish-brown……………C. ochrophyllus

10. Universal veil pink……………………………………………………C. roseobulliardioides

10. Universal veil yellowish to ochraceous…………………………………………………11

11. Pileus reddish-brown, black at the centre…………………………….C. subnymphatus

11. Pileus yellowish-brown to black-brown…………………………………C. cadi-aguirrei